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0.5C Accurate PWM Temperature Sensor in 5-Lead SC-70 TMP05/TMP06
FEATURES
Modulated serial digital output, proportional to temperature 0.5C accuracy at 25C 1.0C accuracy from 25C to 70C Two grades available Operation from -40C to +150C Operation from 3 V to 5.5 V Power consumption 70 W maximum at 3.3 V CMOS/TTL-compatible output on TMP05 Flexible open-drain output on TMP06 Small, low cost 5-lead SC-70 and SOT-23 packages
FUNCTIONAL BLOCK DIAGRAM
VDD
5
TMP05/TMP06
TEMPERATURE SENSOR - CORE AVERAGING BLOCK / COUNTER
1 OUT
REFERENCE
OUTPUT CONTROL
CONV/IN 2
CLK AND TIMING GENERATION
3 FUNC
03340-0-001
APPLICATIONS
Isolated sensors Environmental control systems Computer thermal monitoring Thermal protection Industrial process control Power-system monitors
4
GND
Figure 1.
The TMP05/TMP06 have three modes of operation: continuously converting mode, daisy-chain mode, and one shot mode. A three-state FUNC input determines the mode in which the TMP05/TMP06 operate. The CONV/IN input pin is used to determine the rate with which the TMP05/TMP06 measure temperature in continuously converting mode and one shot mode. In daisy-chain mode, the CONV/IN pin operates as the input to the daisy chain.
GENERAL DESCRIPTION
The TMP05/TMP06 are monolithic temperature sensors that generate a modulated serial digital output (PWM), which varies in direct proportion to the temperature of the devices. The high period (TH) of the PWM remains static over all temperatures, while the low period (TL) varies. The B Grade version offers a higher temperature accuracy of 1C from 0C to 70C with excellent transducer linearity. The digital output of the TMP05/ TMP06 is CMOS/TTL compatible, and is easily interfaced to the serial inputs of most popular microprocessors. The flexible open-drain output of the TMP06 is capable of sinking 5 mA. The TMP05/TMP06 are specified for operation at supply voltages from 3 V to 5.5 V. Operating at 3.3 V, the supply current is typically 370 A. The TMP05/TMP06 are rated for operation over the -40C to +150C temperature range. It is not recommended to operate these devices at temperatures above 125C for more than a total of 5% (5,000 hours) of the lifetime of the devices. They are packaged in low cost, low area SC-70 and SOT-23 packages.
PRODUCT HIGHLIGHTS
1. The TMP05/TMP06 have an on-chip temperature sensor that allows an accurate measurement of the ambient temperature. The measurable temperature range is -40C to +150C. Supply voltage is 3.0 V to 5.5 V. Space-saving 5-lead SOT-23 and SC-70 packages. Temperature accuracy is typically 0.5C. The part needs a decoupling capacitor to achieve this accuracy. 0.025C temperature resolution. The TMP05/TMP06 feature a one shot mode that reduces the average power consumption to 102 W at 1 SPS.
2. 3. 4. 5. 6.
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 (c) 2004 Analog Devices, Inc. All rights reserved.
TMP05/TMP06 TABLE OF CONTENTS
Specifications..................................................................................... 3 TMP05A/TMP06A Specifications ............................................. 3 TMP05B/TMP06B Specifications .............................................. 5 Timing Characteristics ................................................................ 7 Absolute Maximum Ratings............................................................ 8 ESD Caution.................................................................................. 8 Pin Configuration and Function Descriptions............................. 9 Typical Performance Characteristics ........................................... 10 Theory of Operation ...................................................................... 13 Circuit Information.................................................................... 13 Converter Details........................................................................ 13 Functional Description.............................................................. 13 Operating Modes........................................................................ 13 TMP05 Output ........................................................................... 16 TMP06 Output ........................................................................... 16 Application Hints ........................................................................... 17 Thermal Response Time ........................................................... 17 Self-Heating Effects.................................................................... 17 Supply Decoupling ..................................................................... 17 Temperature Monitoring........................................................... 18 Daisy-Chain Application........................................................... 18 Continuously Converting Application .................................... 23 Outline Dimensions ....................................................................... 25 Ordering Guide .......................................................................... 25
REVISION HISTORY
8/04--Revision 0: Initial Version
Rev. 0 | Page 2 of 28
TMP05/TMP06 SPECIFICATIONS
TMP05A/TMP06A SPECIFICATIONS
All A Grade specifications apply for -40C to +150C; VDD decoupling capacitor is a 0.1 F multilayer ceramic; TA = TMIN to TMAX, VDD = 3.0 V to 5.5 V, unless otherwise noted. Table 1.
Parameter TEMPERATURE SENSOR AND ADC Nominal Conversion Rate (One Shot Mode) Accuracy @ VDD = 3.3 V (3.0 V - 3.6 V) Min Typ Max Unit Test Conditions/Comments See Table 7 TA = 0C to 70C, VDD = 3.0 V - 3.6 V TA = -40C to +70C, VDD = 3.0 V - 3.6 V TA = -40C to +125C, VDD = 3.0 V - 3.6 V TA = -40C to +150C, VDD = 3.0 V - 3.6 V TA = 0C to 125C, VDD = 4.5 V - 5.5 V Step size for every 5 s on TL TA = 25C, nominal conversion rate TA = 25C, nominal conversion rate See Table 7 TA = -40C to +150C TA = 0C to 125C Step size for every 5 s on TL TA = 25C, QP conversion rate TA = 25C, QP conversion rate See Table 7 TA = -40C to +150C TA = 0C to 125C Step size for every 5 s on TL TA = 25C, DH/QL conversion rate TA = 25C, DH/QL conversion rate Drift over 10 years, if part is operated at 55C
2 3 4 51 1.5 0.025 40 76
Accuracy @ VDD = 5 V (4.5 V - 5.5 V) Temperature Resolution TH Pulse Width TL Pulse Width Quarter Period Conversion Rate (All Operating Modes) Accuracy @ VDD = 3.3 V (3.0 V - 3.6 V) Accuracy @ VDD = 5 V (4.5 V - 5.5 V) Temperature Resolution TH Pulse Width TL Pulse Width Double High/Quarter Low Conversion Rate (All Operating Modes) Accuracy @ VDD = 3.3 V (3.0 V - 3.6 V) Accuracy @ VDD = 5 V (4.5 V - 5.5 V) Temperature Resolution TH Pulse Width TL Pulse Width Long Term Drift SUPPLIES Supply Voltage Supply Current Normal Mode2 @ 3.3 V Normal Mode2 @ 5.0 V Quiescent2 @ 3.3 V Quiescent2 @ 5.0 V One Shot Mode @ 1 SPS
C C C C C C/5 s ms ms
1.5 1.5 0.1 10 19
C C C/5 s ms ms
1.5 1.5 0.1 80 19 0.081
C C C/5 s ms ms C
3 370 425 3 5.5 30.9 37.38
5.5 550 650 6 10
V A A A A A A W W W Nominal conversion rate Nominal conversion rate Device not converting, output is high Device not converting, output is high Average current @ VDD = 3.3 V, nominal conversion rate @ 25C Average current @ VDD = 5.0 V, nominal conversion rate @ 25C VDD = 3.3 V, continuously converting at nominal conversion rates @ 25C Average power dissipated for VDD = 3.3 V, one shot mode @ 25C Average power dissipated for VDD = 5.0 V, one shot mode @ 25C
Power Dissipation 1 SPS
803.33 101.9 186.9
Rev. 0 | Page 3 of 28
TMP05/TMP06
Parameter TMP05 OUTPUT (PUSH-PULL)3 Output High Voltage, VOH Output Low Voltage, VOL Output High Current, IOUT4 Pin Capacitance Rise Time,5 tLH Fall Time,5 tHL RON Resistance (Low Output) TMP06 OUTPUT (OPEN DRAIN)3 Output Low Voltage, VOL Output Low Voltage, VOL Pin Capacitance High Output Leakage Current, IOH Device Turn-On Time Fall Time,6 tHL RON Resistance (Low Output) DIGITAL INPUTS3 Input Current Input Low Voltage, VIL Input High Voltage, VIH Pin Capacitance Min VDD - 0.3 0.4 2 10 50 50 55 0.4 1.2 10 0.1 20 30 55 5 Typ Max Unit V V mA pF ns ns V V pF A ms ns A V V pF Test Conditions/Comments IOH = 800 A IOL = 800 A Typ VOH = 3.17 V with VDD = 3.3 V
Supply and temperature dependent IOL = 1.6 mA IOL = 5.0 mA PWMOUT = 5.5 V
Supply and temperature dependent VIN = 0 V to VDD
1 0.3 x VDD 0.7 x VDD 3 10
1
It is not recommended to operate the device at temperatures above 125C for more than a total of 5% (5,000 hours) of the lifetime of the device. Any exposure beyond this limit affects device reliability. Normal mode current relates to current during TL. TMP05/TMP06 are not converting during TH, so quiescent current relates to current during TH. 3 Guaranteed by design and characterization, not production tested. 4 It is advisable to restrict the current being pulled from the TMP05 output, because any excess currents going through the die cause self-heating. As a consequence, false temperature readings can occur. 5 Test load circuit is 100 pF to GND. 6 Test load circuit is 100 pF to GND, 10 k to 5.5 V.
2
Rev. 0 | Page 4 of 28
TMP05/TMP06
TMP05B/TMP06B SPECIFICATIONS
All B Grade specifications apply for -40C to +150C; VDD decoupling capacitor is a 0.1 F multilayer ceramic; TA = TMIN to TMAX, VDD = 3.0 V to 5.5 V, unless otherwise noted. Table 2.
Parameter TEMPERATURE SENSOR AND ADC Nominal Conversion Rate (One Shot Mode) Accuracy1 @ VDD = 3.3 V (3.0 V - 3.6 V) Min Typ Max Unit Test Conditions/Comments See Table 7 TA = 25C to 70C, VDD = 3.0 V - 3.6 V TA = 0C to 70C, VDD = 3.0 V - 3.6 V TA = -40C to +70C, VDD = 3.0 V - 3.6 V TA = -40C to +100C, VDD = 3.0 V - 3.6 V TA = -40C to +125C, VDD = 3.0 V - 3.6 V TA = -40C to +150C, VDD = 3.0 V - 3.6 V TA = 0C to 125C, VDD = 4.5 V - 5.5 V Step size for every 5 s on TL TA = 25C, nominal conversion rate TA = 25C, nominal conversion rate See Table 7 TA = -40C to +150C TA = 0C to 125C Step size for every 5 s on TL TA = 25C, QP conversion rate TA = 25C, QP conversion rate See Table 7 TA = -40C to +150C TA = 0C to 125C Step size for every 5 s on TL TA = 25C, DH/QL conversion rate TA = 25C, DH/QL conversion rate Drift over 10 years, if part is operated at 55C
0.5
1 1.25 1.5 2 2.5 32
Accuracy @ VDD = 5.0 V (4.5 V - 5.5 V) Temperature Resolution TH Pulse Width TL Pulse Width Quarter Period Conversion Rate (All Operating Modes) Accuracy @ VDD = 3.3 V (3.0 V - 3.6 V) Accuracy @ VDD = 5.0 V (4.5 V - 5.5 V) Temperature Resolution TH Pulse Width TL Pulse Width Double High/Quarter Low Conversion Rate (All Operating Modes) Accuracy @ VDD = 3.3 V (3.0 V - 3.6 V) Accuracy @ VDD = 5 V (4.5 V - 5.5 V) Temperature Resolution TH Pulse Width TL Pulse Width Long Term Drift SUPPLIES Supply Voltage Supply Current Normal Mode3 @ 3.3 V Normal Mode3 @ 5.0 V Quiescent3 @ 3.3 V Quiescent3 @ 5.0 V One Shot Mode @ 1 SPS
1.5 0.025 40 76
C C C C C C C C/5 s ms ms
1.5 1.5 0.1 10 19
C C C/5 s ms ms
1.5 1.5 0.1 80 19 0.081
C C C/5 s ms ms C
3 370 425 3 5.5 30.9 37.38
5.5 550 650 6 10
V A A A A A A W W W Nominal conversion rate Nominal conversion rate Device not converting, output is high Device not converting, output is high Average current @ VDD = 3.3 V, nominal conversion rate @ 25C Average current @ VDD = 5.0 V, nominal conversion rate @ 25C VDD = 3.3 V, continuously converting at nominal conversion rates @ 25C Average power dissipated for VDD = 3.3 V, one shot mode @ 25C Average power dissipated for VDD = 5.0 V, one shot mode @ 25C
Power Dissipation 1 SPS
803.33 101.9 186.9
Rev. 0 | Page 5 of 28
TMP05/TMP06
Parameter TMP05 OUTPUT (PUSH-PULL)4 Output High Voltage, VOH Output Low Voltage, VOL Output High Current, IOUT5 Pin Capacitance Rise Time,6 tLH Fall Time,6 tHL RON Resistance (Low Output) TMP06 OUTPUT (OPEN DRAIN)4 Output Low Voltage, VOL Output Low Voltage, VOL Pin Capacitance High Output Leakage Current, IOH Device Turn-On Time Fall Time,7 tHL DIGITAL INPUTS4 Input Current Input Low Voltage, VIL Input High Voltage, VIH Pin Capacitance Min VDD - 0.3 0.4 2 10 50 50 55 0.4 1.2 10 0.1 20 30 5 Typ Max Unit V V mA pF ns ns V V pF A ms ns A V V pF Test Conditions/Comments IOH = 800 A IOL = 800 A Typ VOH = 3.17 V with VDD = 3.3 V
Supply and temperature dependent IOL = 1.6 mA IOL = 5.0 mA PWMOUT = 5.5 V
1 0.3 x VDD 0.7 x VDD 3 10
VIN = 0 V to VDD
1 2
The accuracy specifications for 3.0 V to 3.6 V supply range are specified to 3-sigma performance. See Figure 22. It is not recommended to operate the device at temperatures above 125C for more than a total of 5% (5,000 hours) of the lifetime of the device. Any exposure beyond this limit affects device reliability. 3 Normal mode current relates to current during TL. TMP05/TMP06 are not converting during TH, so quiescent current relates to current during TH. 4 Guaranteed by design and characterization, not production tested. 5 It is advisable to restrict the current being pulled from the TMP05 output, because any excess currents going through the die cause self-heating. As a consequence, false temperature readings can occur. 6 Test load circuit is 100 pF to GND. 7 Test load circuit is 100 pF to GND, 10 k to 5.5 V.
Rev. 0 | Page 6 of 28
TMP05/TMP06
TIMING CHARACTERISTICS
TA = TMIN to TMAX, VDD = 3.0 V to 5.5 V, unless otherwise noted. Guaranteed by design and characterization, not production tested. Table 3.
Parameter TH TL t31 t41 t42 t5 Limit 40 76 50 50 30 25 Unit ms typ ms typ ns typ ns typ ns typ s max Comments PWM high time @ 25C under nominal conversion rate PWM low time @ 25C under nominal conversion rate TMP05 output rise time TMP05 output fall time TMP06 output fall time Daisy-chain start pulse width
1 2
Test load circuit is 100 pF to GND. Test load circuit is 100 pF to GND, 10 k to 5.5 V.
TH
TL
t3
10% 90%
t4
90% 10%
Figure 2. PWM Output Nominal Timing Diagram (25C)
START PULSE
t5
Figure 3. Daisy-Chain Start Timing
Rev. 0 | Page 7 of 28
03340-0-003
03340-0-002
TMP05/TMP06 ABSOLUTE MAXIMUM RATINGS
Table 4.
Parameter VDD to GND Digital Input Voltage to GND Maximum Output Current (OUT) Operating Temperature Range1 Storage Temperature Range Maximum Junction Temperature, TJMAX 5-Lead SOT-23 Power Dissipation2 Thermal Impedance4 JA, Junction-to-Ambient (Still Air) 5-Lead SC-70 Power Dissipation2 Thermal Impedance4 JA, Junction-to-Ambient JC, Junction-to-Case IR Reflow Soldering Peak Temperature Time at Peak Temperature Ramp-Up Rate Ramp-Down Rate Rating -0.3 V to +7 V -0.3 V to VDD + 0.3 V 10 mA -40C to +150C -65C to +160C 150C WMAX = (TJ max - TA3)/JA 240C/W WMAX = (TJ max - TA3)/JA 207.5C/W 172.3C/W 220C (0C/5C) 10 s to 20 s 2C/s to 3C/s -6C/s
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
1.0 0.9
MAXIMUM POWER DISSIPATION (W)
0.8 0.7 0.6 SC-70 0.5 0.4 0.3 SOT-23 0.2 0.1 0 -40 -20 0 20 40 60 80 TEMPERATURE (C) 100 120 140
03340-0-004
Figure 4. Maximum Power Dissipation vs. Temperature
1
It is not recommended to operate the device at temperatures above 125C for more than a total of 5% (5,000 hours) of the lifetime of the device. Any exposure beyond this limit affects device reliability. 2 SOT-23 values relate to the package being used on a 2-layer PCB and SC-70 values relate to the package being used on a 4-layer PCB. See Figure 4 for a plot of maximum power dissipation versus ambient temperature (TA). 3 TA = ambient temperature. 4 Junction-to-case resistance is applicable to components featuring a preferential flow direction, for example, components mounted on a heat sink. Junction-to-ambient resistance is more useful for air-cooled PCB mounted components.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although this product features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
Rev. 0 | Page 8 of 28
TMP05/TMP06 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
OUT 1
TMP05/ TMP06
TOP VIEW (Not to Scale)
5
VDD
CONV/IN 2
FUNC 3
4
GND
Figure 5. Pin Configuration
Table 5. Pin Function Descriptions
Pin No. 1 2 Mnemonic OUT CONV/IN Description Digital Output. Pulse-width modulated (PWM) output gives a square wave whose ratio of high to low period is proportional to temperature. Digital Input. In continuously converting and one shot operating modes, a high, low, or float input determines the temperature measurement rate. In daisy-chain operating mode, this pin is the input pin for the PWM signal from the previous part on the daisy chain. Digital Input. A high, low, or float input on this pin gives three different modes of operation. For details, see the Operating Modes section. Analog and Digital Ground. Positive Supply Voltage, 3.0 V to 5.5 V. Use of a decoupling capacitor of 0.1 F as close as possible to this pin is strongly recommended.
3 4 5
FUNC GND VDD
Rev. 0 | Page 9 of 28
03340-0-005
TMP05/TMP06 TYPICAL PERFORMANCE CHARACTERISTICS
10 9 8
VDD = 3.3V CLOAD = 100pF
OUTPUT FREQUENCY (Hz)
7 6 5 4 3 2 1 0 -50 VDD = 3.3V OUT PIN LOADED WITH 10k -30 -10 10 30 50 70 90 TEMPERATURE (C) 110 130 150
03340-0-020
VOLTAGE (V)
0
1V/DIV 0 TIME (ns)
100ns/DIV
Figure 6. PWM Output Frequency vs. Temperature
Figure 9. TMP05 Output Rise Time at 25C
8.37 8.36
OUTPUT FREQUENCY (Hz)
8.35 8.34 8.33 8.32 8.31 8.30 8.29 3.0 OUT PIN LOADED WITH 10k AMBIENT TEMPERATURE = 25C 3.3 3.6 3.9 4.2 4.5 4.8 SUPPLY VOLTAGE (V) 5.1 5.4
03340-0-021
VDD = 3.3V CLOAD = 100pF
VOLTAGE (V)
0
1V/DIV 0 TIME (ns)
100ns/DIV
Figure 7. PWM Output Frequency vs. Supply Voltage
Figure 10. TMP05 Output Fall Time at 25C
140 VDD = 3.3V OUT PIN LOADED WITH 10k 120 TL TIME 100 80 60 TH TIME 40 20 0 -50
03340-0-025
VOLTAGE (V)
VDD = 3.3V RPULLUP = 1k RLOAD = 10 k CLOAD = 100pF 0
TIME (ms)
03340-0-022
1V/DIV 0 TIME (ns)
100ns/DIV
-30
-10
10
30 50 70 90 TEMPERATURE (C)
110
130
150
Figure 8. TH and TL Times vs. Temperature
Figure 11. TMP06 Output Fall Time at 25C
Rev. 0 | Page 10 of 28
03340-0-024
03340-0-023
TMP05/TMP06
2000 VDD = 3.3V 1800 1600 1.00 0.75 1.25 VDD = 3.3V CONTINUOUS MODE OPERATION NOMINAL CONVERSION RATE
TEMPERATURE ERROR (C)
03340-0-026
1400 RISE TIME
0.50 0.25 0 -0.25 -0.50 -0.75 -1.00 -1.25 -40 -20 0 20 40 60 80 TEMPERATURE (C) 100 120 140
03340-0-029
TIME (ns)
1200 1000 800 600 FALL TIME 400 200 0 0
1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 CAPACTIVE LOAD (pF)
Figure 12. TMP05 Output Rise and Fall Times vs. Capacitive Load
Figure 15. Output Accuracy vs. Temperature
250 VDD = 3.3V ILOAD = 5mA
350 300 250 VDD = 3.3V CONTINUOUS MODE OPERATION NOMINAL CONVERSION RATE NO LOAD ON OUT PIN
OUTPUT LOW VOLTAGE (mV)
200
150
CURRENT (A)
ILOAD = 0.5mA ILOAD = 1mA
03340-0-027
200 150 100 50 0 -50
100
50
03340-0-030
0 -50
-25
0
25 50 75 100 TEMPERATURE (C)
125
150
-25
0
25 50 75 100 TEMPERATURE (C)
125
150
Figure 13. TMP06 Output Low Voltage vs. Temperature
Figure 16. Supply Current vs. Temperature
35 VDD = 3.3V 30
255 250 245 240 235 230 225 220 215 2.7
03340-0-031
AMBIENT TEMPERATURE = 25C CONTINUOUS MODE OPERATION NOMINAL CONVERSION RATE NO LOAD ON OUT PIN
25
20
03340-0-028
15 -50
-25
0
25 50 75 100 TEMPERATURE (C)
125
150
SUPPLY CURRENT (A)
SINK CURRENT (mA)
3.0
3.3
3.6
3.9 4.2 4.5 4.8 SUPPLY VOLTAGE (V)
5.1
5.4
5.7
Figure 14. TMP06 Open Drain Sink Current vs. Temperature
Figure 17. Supply Current vs. Supply Voltage
Rev. 0 | Page 11 of 28
TMP05/TMP06
3.5 3.0 1.25 VDD = 3.3V AMBIENT TEMPERATURE = 25C
TEMPERATURE OFFSET (C)
2.5 2.0 VDD = 5V 1.5 1.0 0.5 0 -40
TEMPERATURE ERROR (C)
03340-0-032
VDD = 5.5V
1.00
0.75
0.50
0.25
03340-0-034
0 0 5 10 15 20 LOAD CURRENT (mA) 25 30
-20
0
20 40 60 80 TEMPERATURE (C)
100
120
140
Figure 18. Temperature Offset vs. Power Supply Variation from 3.3 V
Figure 20. TMP05 Temperature Error vs. Load Current
140 120 FINAL TEMPERATURE = 120C 100 80 60 40 20 0 0 10 20 30 40 TIME (Seconds) 50 60 70 TEMPERATURE OF ENVIRONMENT (30C) CHANGED HERE
03340-0-033
TEMPERATURE (C)
Figure 19. Response to Thermal Shock
Rev. 0 | Page 12 of 28
TMP05/TMP06 THEORY OF OPERATION
CIRCUIT INFORMATION
The TMP05/TMP06 are monolithic temperature sensors that generate a modulated serial digital output that varies in direct proportion with the temperature of the device. An on-board sensor generates a voltage precisely proportional to absolute temperature, which is compared to an internal voltage reference and is input to a precision digital modulator. The ratiometric encoding format of the serial digital output is independent of the clock drift errors common to most serial modulation techniques such as voltage-to-frequency converters. Overall accuracy for the A Grade is 2C from 0C to +70C, with excellent transducer linearity. B Grade accuracy is 1C from 25C to 70C. The digital output of the TMP05 is CMOS/TTL compatible, and is easily interfaced to the serial inputs of most popular microprocessors. The open-drain output of the TMP06 is capable of sinking 5 mA. The on-board temperature sensor has excellent accuracy and linearity over the entire rated temperature range without correction or calibration by the user. The sensor output is digitized by a first-order - modulator, also known as the charge balance type analog-to-digital converter. This type of converter utilizes time-domain oversampling and a high accuracy comparator to deliver 12 bits of effective accuracy in an extremely compact circuit. The modulated output of the comparator is encoded using a circuit technique that results in a serial digital signal with a mark-space ratio format. This format is easily decoded by any microprocessor into either C or F values, and is readily transmitted or modulated over a single wire. More importantly, this encoding method neatly avoids major error sources common to other modulation techniques, because it is clockindependent.
FUNCTIONAL DESCRIPTION
The output of the TMP05/TMP06 is a square wave with a typical period of 116 ms at 25C (CONV/IN pin is left floating). The high period, TH, is constant, while the low period, TL, varies with measured temperature. The output format for the nominal conversion rate is readily decoded by the user as follows: Temperature (C) = 421 - (751 x (TH/TL)) (1)
Figure 22. TMP05/TMP06 Output Format
CONVERTER DETAILS
The - modulator consists of an input sampler, a summing network, an integrator, a comparator, and a 1-bit DAC. Similar to the voltage-to-frequency converter, this architecture creates, in effect, a negative feedback loop whose intent is to minimize the integrator output by changing the duty cycle of the comparator output in response to input voltage changes. The comparator samples the output of the integrator at a much higher rate than the input sampling frequency, which is called oversampling. Oversampling spreads the quantization noise over a much wider band than that of the input signal, improving overall noise performance and increasing accuracy.
- MODULATOR INTEGRATOR COMPARATOR VOLTAGE REF AND VPTAT + 1-BIT DAC + 03340-0-006
The time periods TH (high period) and TL (low period) are values easily read by a microprocessor timer/counter port, with the above calculations performed in software. Because both periods are obtained consecutively using the same clock, performing the division indicated in the previous formula results in a ratiometric value that is independent of the exact frequency or drift of either the originating clock of the TMP05/ TMP06 or the user's counting clock.
OPERATING MODES
The user can program the TMP05/TMP06 to operate in three different modes by configuring the FUNC pin on power-up as either low, floating, or high. Table 6. Operating Modes
FUNC Pin Low Floating High Operating Mode One shot Continuously converting Daisy-chain
Continuously Converting Mode
In continuously converting mode, the TMP05/TMP06 continuously output a square wave representing temperature. The frequency at which this square wave is output is determined by the state of the CONV/IN pin on power-up. Any change to the state of the CONV/IN pin after power-up is not reflected in the parts until the TMP05/TMP06 are powered down and back up.
CLOCK GENERATOR
DIGITAL FILTER
TMP05/TMP06 OUT (SINGLE-BIT)
Figure 21. First-Order - Modulator
Rev. 0 | Page 13 of 28
03340-0-007
TH
TL
TMP05/TMP06
One Shot Mode
In one shot mode, the TMP05/TMP06 output one square wave representing temperature when requested by the microcontroller. The microcontroller pulls the OUT pin low and then releases it to indicate to the TMP05/TMP06 that an output is required. The temperature measurement is output when the OUT line is released by the microcontroller (see Figure 23).
CONTROLLER PULLS DOWN
OUT LINE HERE
Conversion Rate
In continuously converting and one shot modes, the state of the CONV/IN pin on power-up determines the rate at which the TMP05/TMP06 measure temperature. The available conversion rates are shown in Table 7. Table 7. Conversion Rates
CONV/IN Pin Low Floating High
03340-0-019
CONTROLLER RELEASES
OUT LINE HERE
TEMP MEASUREMENT TH TL
Conversion Rate Quarter period (TH / 4, TL / 4) Nominal Double high (TH x 2) Quarter low (TL / 4)
TH/TL (25C) 10/19 (ms) 40/76 (ms) 80/19 (ms)
T0
TIME
Figure 23. TMP05/TMP06 One Shot OUT Pin Signal
The TMP05 (push-pull output) advantage when using the high state conversion rate (double high/quarter low) is lower power consumption. However, the trade-off is loss of resolution on the low time. Depending on the state of the CONV/IN pin, two different temperature equations must be used. The temperature equation for the low and floating states' conversion rates is Temperature (C) = 421 - (751 x (TH/TL)) Table 8. Conversion Times Using Equation 2
Temperature (C) -40 -30 -20 -10 0 10 20 25 30 40 50 60 70 80 90 100 110 120 130 140 150 TL (ms) 65.2 66.6 68.1 69.7 71.4 73.1 74.9 75.9 76.8 78.8 81 83.2 85.6 88.1 90.8 93.6 96.6 99.8 103.2 106.9 110.8 Nominal Cycle Time (ms) 105 107 108 110 111 113 115 116 117 119 121 123 126 128 131 134 137 140 143 147 151
In the TMP05 one shot mode only, an internal resistor is switched in series with the pull-up MOSFET. The TMP05 OUT pin has a push-pull output configuration (see Figure 24), and, therefore, needs a series resistor to limit the current drawn on this pin when the user pulls it low to start a temperature conversion. This series resistance prevents any short circuit from VDD to GND, and, therefore, protects the TMP05 from short-circuit damage.
V+
(2)
5k OUT
TMP05
Figure 24. TMP05 One Shot Mode OUT Pin Configuration
The advantages of the one shot mode include lower average power consumption, and the microcontroller knows that the first low-to-high transition occurs after the microcontroller releases the OUT pin.
03340-0-016
Rev. 0 | Page 14 of 28
TMP05/TMP06
The temperature equation for the high state conversion rate is Temperature (C) = 421 - (93.875 x (TH/TL)) Table 9. Conversion Times Using Equation 3
Temperature (C) -40 -30 -20 -10 0 10 20 25 30 40 50 60 70 80 90 100 110 120 130 140 150 TL (ms) 16.3 16.7 17 17.4 17.8 18.3 18.7 19 19.2 19.7 20.2 20.8 21.4 22 22.7 23.4 24.1 25 25.8 26.7 27.7 High Cycle Time (ms) 96.2 96.6 97.03 97.42 97.84 98.27 98.73 98.96 99.21 99.71 100.24 100.8 101.4 102.02 102.69 103.4 104.15 104.95 105.81 106.73 107.71
OUT MICRO CONV/IN
(3)
TMP05/ TMP06
#1 OUT CONV/IN
IN
TMP05/ TMP06
#2 OUT CONV/IN
TMP05/ TMP06
#3 OUT CONV/IN
TMP05/ TMP06
03340-0-009
#N OUT
Figure 25. Daisy-Chain Structure
A second microcontroller line is needed to generate the conversion start pulse on the CONV/IN pin. The pulse width of the start pulse should be less than 25 s. The start pulse on the CONV/IN pin lets the first TMP05/TMP06 part know that it should start a conversion and output its own temperature now. Once the part has output its own temperature, it then outputs a start pulse for the next part on the daisy-chain link. The pulse width of the start pulse from each TMP05/TMP06 part is typically 17 s. Figure 26 shows the start pulse on the CONV/IN pin of the first device on the daisy chain and Figure 27 shows the PWM output by this first part.
MUST GO HIGH ONLY AFTER START PULSE HAS BEEN OUTPUT BY LAST TMP05/TMP06 ON DAISY CHAIN. START PULSE CONVERSION STARTS ON THIS EDGE
03340-0-017
Daisy-Chain Mode
Setting the FUNC pin to a high state allows multiple TMP05/ TMP06s to be connected together and, therefore, allows one input line of the microcontroller to be the sole receiver of all temperature measurements. In this mode, the CONV/IN pin operates as the input of the daisy chain, and conversions take place at the nominal conversion rate of TH/TL = 40 ms/ 76 ms at 25C. Therefore, the temperature equation for the daisy-chain mode of operation is Temperature (C) = 421 - (751 x (TH/TL)) (4)
<25s
T0
TIME
Figure 26. Start Pulse at CONV/IN Pin of First TMP05/TMP06 Device on Daisy Chain
#1 TEMP MEASUREMENT
START PULSE
17s
03340-0-010
T0
TIME
Figure 27. Daisy-Chain Temperature Measurement and Start Pulse Output from First TMP05/TMP06
Rev. 0 | Page 15 of 28
TMP05/TMP06
#1 TEMP MEASUREMENT #2 TEMP MEASUREMENT #N TEMP MEASUREMENT START PULSE
T0
TIME
Figure 28. Daisy-Chain Signal at Input to the Microcontroller
Before the start pulse reaches a TMP05/TMP06 part in the daisy chain, the device acts as a buffer for the previous temperature measurement signals. Each part monitors the PWM signal for the start pulse from the previous part. Once the part detects the start pulse, it initiates a conversion and inserts the result at the end of the daisy-chain PWM signal. It then inserts a start pulse for the next part in the link. The final signal input to the microcontroller should look like Figure 28. The input signal on Pin 2 (IN) of the first daisy-chain device must remain low until the last device has output its start pulse. If the input on Pin 2 (IN) goes high and remains high, the TMP05/TMP06 part powers down between 0.3 s and 1.2 s later. The part, therefore, requires another start pulse to generate another temperature measurement. Note that, to reduce power dissipation through the part, it is recommended to keep Pin 2 (IN) at a high state when the part is not converting. If the IN pin is at 0 V, then the OUT pin is at 0 V (because it is acting as a buffer when not converting), and drawing current through either the pull-up MOSFET (TMP05) or the pull-up resistor (TMP06).
An internal resistor is connected in series with the pull-up MOSFET when the TMP05 is operating in one shot mode.
V+
OUT
TMP05
Figure 29. TMP05 Digital Output Structure
TMP06 OUTPUT
The TMP06 has an open-drain output. Because the output source current is set by the pull-up resistor, output capacitance should be minimized in TMP06 applications. Otherwise, unequal rise and fall times skew the pulse width and introduce measurement errors.
OUT
TMP05 OUTPUT
The TMP05 has a push-pull CMOS output (Figure 29) and provides rail-to-rail output drive for logic interfaces. The rise and fall times of the TMP05 output are closely matched, so that errors caused by capacitive loading are minimized. If load capacitance is large (for example, when driving a long cable), an external buffer might improve accuracy.
TMP06
Figure 30. TMP06 Digital Output Structure
Rev. 0 | Page 16 of 28
03340-0-012
03340-0-011
03340-0-008
TMP05/TMP06 APPLICATION HINTS
THERMAL RESPONSE TIME
The time required for a temperature sensor to settle to a specified accuracy is a function of the thermal mass of the sensor and the thermal conductivity between the sensor and the object being sensed. Thermal mass is often considered equivalent to capacitance. Thermal conductivity is commonly specified using the symbol Q, and can be thought of as thermal resistance. It is commonly specified in units of degrees per watt of power transferred across the thermal joint. Thus, the time required for the TMP05/TMP06 to settle to the desired accuracy is dependent on the package selected, the thermal contact established in that particular application, and the equivalent power of the heat source. In most applications, the settling time is probably best determined empirically.
SUPPLY DECOUPLING
The TMP05/TMP06 should be decoupled with a 0.1 F ceramic capacitor between VDD and GND. This is particularly important, if the TMP05/TMP06 are mounted remotely from the power supply. Precision analog products such as the TMP05/TMP06 require a well-filtered power source. Because the TMP05/ TMP06 operate from a single supply, it might seem convenient to simply tap into the digital logic power supply. Unfortunately, the logic supply is often a switch-mode design, which generates noise in the 20 kHz to 1 MHz range. In addition, fast logic gates can generate glitches hundreds of mV in amplitude due to wiring resistance and inductance. If possible, the TMP05/TMP06 should be powered directly from the system power supply. This arrangement, shown in Figure 31, isolates the analog section from the logic switching transients. Even if a separate power supply trace is not available, however, generous supply bypassing reduces supply-lineinduced errors. Local supply bypassing consisting of a 0.1 F ceramic capacitor is critical for the temperature accuracy specifications to be achieved. This decoupling capacitor must be placed as close as possible to the TMP05/TMP06's VDD pin. A recommended decoupling capacitor is Phicomp's 100 nF, 50 V X74. Keep the capacitor package size as small as possible, because ESL (equivalent series inductance) increases with increasing package size. Reducing the capacitive value below 100 nF increases the ESR (equivalent series resistance). Use of a capacitor with an ESL of 1 nH and an ESR of 80 m is recommended.
TTL/CMOS LOGIC CIRCUITS
SELF-HEATING EFFECTS
The temperature measurement accuracy of the TMP05/TMP06 might be degraded in some applications due to self-heating. Errors introduced are from the quiescent dissipation and power dissipated when converting, that is, during TL. The magnitude of these temperature errors is dependent on the thermal conductivity of the TMP05/TMP06 package, the mounting technique, and the effects of airflow. Static dissipation in the TMP05/ TMP06 is typically 10 W operating at 3.3 V with no load. In the 5-lead SC-70 package mounted in free air, this accounts for a temperature increase due to self-heating of T = PDISS x JA = 10 W x 211.4C/W = 0.0021C (5)
In addition, power is dissipated by the digital output, which is capable of sinking 800 A continuously (TMP05). Under an 800 A load, the output can dissipate PDISS = (0.4 V)(0.8 mA)((TL)/TH + TL)) (6)
0.1F
TMP05/ TMP06
POWER SUPPLY
T = PDISS x JA = 0.21 mW x 211.4C/W = 0.044C (7) This temperature increase adds directly to that from the quiescent dissipation and affects the accuracy of the TMP05/ TMP06 relative to the true ambient temperature. It is recommended that current dissipated through the device be kept to a minimum, because it has a proportional effect on the temperature error.
Figure 31. Use Separate Traces to Reduce Power Supply Noise
Rev. 0 | Page 17 of 28
03340-0-013
For example, with TL = 80 ms and TH = 40 ms, the power dissipation due to the digital output is approximately 0.21 mW. In a free-standing SC-70 package, this accounts for a temperature increase due to self-heating of
TMP05/TMP06
TEMPERATURE MONITORING
The TMP05/TMP06 are ideal for monitoring the thermal environment within electronic equipment. For example, the surface-mounted package accurately reflects the exact thermal conditions that affect nearby integrated circuits. The TMP05/TMP06 measure and convert the temperature at the surface of their own semiconductor chip. When the TMP05/ TMP06 are used to measure the temperature of a nearby heat source, the thermal impedance between the heat source and the TMP05/TMP06 must be considered. Often, a thermocouple or other temperature sensor is used to measure the temperature of the source, while the TMP05/TMP06 temperature is monitored by measuring TH and TL. Once the thermal impedance is determined, the temperature of the heat source can be inferred from the TMP05/TMP06 output. One example of using the TMP05/TMP06's unique properties is in monitoring a high power dissipation microprocessor. The TMP05/TMP06 part, in a surface-mounted package, is mounted directly beneath the microprocessor's pin grid array (PGA) package. In a typical application, the TMP05/TMP06's output is connected to an ASIC, where the pulse width is measured. The TMP05/TMP06 pulse output provides a significant advantage in this application, because it produces a linear temperature output while needing only one I/O pin and without requiring an ADC.
DAISY-CHAIN APPLICATION
This section provides an example of how to connect two TMP05s in daisy-chain mode to a standard 8052 microcontroller core. The ADuC812 is the microcontroller used in the following example and has the 8052 as its core processing engine. Figure 32 shows how to interface to the 8052 core device. TMP05 Program Code Example 1 shows how to communicate from the ADuC812 to the two daisy-chained TMP05s. This code can also be used with the ADuC831 or any microprocessor running on an 8052 core. Figure 32 is a diagram of the input waveform into the ADuC812 from the TMP05 daisy chain, and it shows how the code's variables are assigned. It should be referenced when reading TMP05 Program Code Example 1. Application notes are available on the Analog Devices Web site showing the TMP05 working with other types of microcontrollers.
TIMER T0 STARTS TEMPSEGMENT = 1 TEMPSEGMENT = 2 TEMPSEGMENT = 3
TEMP_HIGH0 INTO
TEMP_HIGH1 INTO
TEMP_HIGH2 INTO
03340-0-035
TEMP_LOW0
TEMP_LOW1
Figure 32. Reference Diagram for Software Variables in TMP05 Program Code Example 1
Figure 33 shows how the three devices are hardwired together. Figure 34 to Figure 36 are flow charts for this program.
START PULSE
VDD
TMP05 (U1)
VDD
ADuC812
OUT CONV/IN
VDD
0.1F
P3.7
GND
FUNC
TH (U1)
START PULSE
TL (U1)
T0
VDD
TIME P3.2/INTO
TMP05 (U2)
VDD
OUT CONV/IN
VDD
0.1F
GND
FUNC
TH (U1) TL (U1) T0
TH (U2)
START PULSE TL (U2)
TIME
Figure 33. Typical Daisy-Chain Application Circuit
Rev. 0 | Page 18 of 28
03340-0-014
TMP05/TMP06
DECLARE VARIABLES
SET-UP UART
INITIALIZE TIMERS
CONVERT VARIABLES TO FLOATS
ENABLE TIMER INTERRUPTS
SEND START PULSE
CALCULATE TEMPERATURE FROM U1
START TIMER 0
TEMP U1 = 421 - (751 x (TEMP_HIGH0/ (TEMP_LOW0 - (TEMP_HIGH1)))
SET-UP EDGE TRIGGERED (H-L) INTO
CALCULATE TEMPERATURE FROM U2
ENABLE INTO INTERRUPT
TEMP U2 = 421 - (751 x (TEMP_HIGH1/ (TEMP_LOW1 - (TEMP_HIGH2)))
ENABLE GLOBAL INTERRUPTS
SEND TEMPERATURE RESULTS OUT OF UART
Figure 35. ADuC812 Temperature Calculation Routine Flowchart
WAIT FOR INTERRUPT
PROCESS INTERRUPTS
WAIT FOR END OF MEASUREMENT
Figure 34. ADuC812 Main Routine Flowchart
03340-0-036
CALCULATE TEMPERATURE AND SEND FROM UART
Rev. 0 | Page 19 of 28
03340-0-038
TMP05/TMP06
ENTER INTERRUPT ROUTINE
NO
CHECK IF TIMER 1 IS RUNNING
YES START TIMER 1 COPY TIMER 1 VALUES INTO A REGISTER
RESET TIMER 1
IS TEMPSEGMENT =1
NO
YE S CALCULATE TEMP_HIGH0 IS TEMPSEGMENT =2
NO
RESET TIMER 0 TO ZERO
YES CALCULATE TEMP_LOW0 USING TIMER 1 VALUES IS TEMPSEGMENT =3 NO
YE S CALCULATE TEMP_HIGH1 USING TIMER 0 VALUES CALCULATE TEMP_LOW1 INCREMENT TEMPSEGMENT
RESET TIMER 0 TO ZERO
Figure 36. ADuC812 Interrupt Routine Flowchart
TMP05 Program Code Example 1
//============================================================================================= // Description : This program reads the temperature from 2 daisy-chained TMP05 parts. // // This code runs on any standard 8052 part running at 11.0592MHz. // If an alternative core frequency is used, the only change required is an // adjustment of the baud rate timings. // // P3.2 = Daisy-chain output connected to INT0. // P3.7 = Conversion control. // Timer0 is used in gate mode to measure the high time. // Timer1 is triggered on a high-to-low transition of INT0 and is used to measure // the low time. //=============================================================================================
Rev. 0 | Page 20 of 28
03340-0-037
CALCULATE TEMP_HIGH2 USING TIMER 0 VALUES
EXIT INTERRUPT ROUTINE
TMP05/TMP06
#include #include //ADuC812 SFR definitions void delay(int); sbit Daisy_Start_Pulse = 0xB7; //Daisy_Start_Pulse = P3.7 sbit P3_4 = 0xB4; long temp_high0,temp_low0,temp_high1,temp_low1,temp_high2,th,tl; //Global variables to allow //access during ISR. //See Figure 32. int timer0_count=0,timer1_count=0,tempsegment=0; void int0 () interrupt 0 { if (TR1 == 1) { th = TH1; tl = TL1; th = TH1; TL1 = 0; TH1 = 0; } TR1=1; Already //INT0 Interrupt Service Routine
//To avoid misreading timer
//Start timer1 running, if not running
if (tempsegment == 1) { temp_high0 = (TH0*0x100+TL0)+(timer0_count*65536); //Convert to integer TH0=0x00; //Reset count TL0=0x00; timer0_count=0; } if (tempsegment == 2) { temp_low0 = (th*0x100+tl)+(timer1_count*65536); //Convert to integer temp_high1 = (TH0*0x100+TL0)+(timer0_count*65536); //Convert to integer TH0=0x00; //Reset count TL0=0x00; timer0_count=0; timer1_count=0; } if (tempsegment == 3) { temp_low1 = (th*0x100+tl)+(timer1_count*65536); //Convert to integer temp_high2 = (TH0*0x100+TL0)+(timer0_count*65536); TH0=0x00; //Reset count TL0=0x00; timer0_count=0; timer1_count=0; } tempsegment++; } void timer0 () interrupt 1 { timer0_count++; } void timer1 () interrupt 3 { timer1_count++;
//Keep a record of timer0 overflows
//Keep a record of timer1 overflows
Rev. 0 | Page 21 of 28
TMP05/TMP06
} void main(void) { double temp1=0,temp2=0; double T1,T2,T3,T4,T5; // Initialization TMOD = 0x19;
// Timer1 in 16-bit counter mode // Timer0 in 16-bit counter mode // with gate on INT0. Timer0 only counts when INTO pin // is high. ET0 = 1; // Enable timer0 interrupts ET1 = 1; // Enable timer1 interrupts tempsegment = 1; // Initialize segment Daisy_Start_Pulse = 0; // Start Pulse Daisy_Start_Pulse = 1; Daisy_Start_Pulse = 0; // Set T0 to count the high period TR0 = 1; IT0 = 1; EX0 = 1; EA = 1; for(;;) { if (tempsegment == 4) break; } //CONFIGURE UART SCON = 0x52 ; TMOD = 0x20 ; TH1 = 0xFD ; TR1 = 1; //Convert variables to floats for calculation T1= temp_high0; T2= temp_low0; T3= temp_high1; T4= temp_low1; T5= temp_high2; temp1=421-(751*(T1/(T2-T3))); temp2=421-(751*(T3/(T4-T5))); printf("Temp1 = %f\nTemp2 = %f\n",temp1,temp2); while (1); } // Delay routine void delay(int length) { while (length >=0) length--; } // Pull P3.7 low
//Toggle P3.7 to give start pulse // Start timer0 running // Interrupt0 edge triggered // Enable interrupt // Enable global interrupts
// // // //
8-bit, no parity, 1 stop bit Configure timer1.. ..for 9600baud.. ..(assuming 11.0592MHz crystal)
//Sends temperature result out UART // END of program
Rev. 0 | Page 22 of 28
TMP05/TMP06
CONTINUOUSLY CONVERTING APPLICATION
This section provides an example of how to connect one TMP05 in continuously converting mode to a microchip PIC16F876 microcontroller. Figure 37 shows how to interface to the PIC16F876. TMP05 Program Code Example 2 shows how to communicate from the microchip device to the TMP05. This code can also be used with other PICs by simply changing the include file for the part.
T0 FIRST TEMP MEASUREMENT SECOND TEMP MEASUREMENT
TIME
PIC16F876
PA.0
TMP05
OUT CONV/IN FUNC GND VDD
3.3V
0.1F
03340-0-039
Figure 37. Typical Daisy-Chain Application Circuit
TMP05 Program Code Example 2
//============================================================================================= // // Description : This program reads the temperature from a TMP05 part set up in continuously // converting mode. // This code was written for a PIC16F876, but can be easily configured to function with other // PICs by simply changing the include file for the part. // // Fosc = 4MHz // Compiled under CCS C compiler IDE version 3.4 // PWM output from TMP05 connected to PortA.0 of PIC16F876 // //============================================================================================ #include <16F876.h> // Insert header file for the particular PIC being used #device adc=8 #use delay(clock=4000000) #fuses NOWDT,XT, PUT, NOPROTECT, BROWNOUT, LVP //_______________________________Wait for high function_____________________________________ void wait_for_high() { while(input(PIN_A0)) ; /* while high, wait for low */ while(!input(PIN_A0)); /* wait for high */ } //______________________________Wait for low function_______________________________________ void wait_for_low() { while(input(PIN_A0)); /* wait for high */ } //_______________________________Main begins here____________________________________________ void main(){ long int high_time,low_time,temp; setup_adc_ports(NO_ANALOGS); setup_adc(ADC_OFF); setup_spi(FALSE); setup_timer_1 ( T1_INTERNAL | T1_DIV_BY_2); //Sets up timer to overflow after 131.07ms
Rev. 0 | Page 23 of 28
TMP05/TMP06
do{ wait_for_high(); set_timer1(0); wait_for_low(); high_time = get_timer1(); set_timer1(0); wait_for_high(); low_time = get_timer1(); temp = 421 - ((751 * high_time)/low_time)); //Reset timer
//Reset timer
//Temperature equation for the high state //conversion rate. //Temperature value stored in temp as a long int
}while (TRUE); }
Rev. 0 | Page 24 of 28
TMP05/TMP06 OUTLINE DIMENSIONS
2.90 BSC
5 4
2.00 BSC
1.60 BSC
1
2.80 BSC
2 3
5
4
1.25 BSC
1 2 3
2.10 BSC
PIN 1 0.95 BSC 1.30 1.15 0.90
0.22 0.08
PIN 1 1.00 0.90 0.70
0.65 BSC
1.10 MAX
1.90 BSC
1.45 MAX
8 4 0 0.46 0.36 0.26
0.22 0.08 10 5 0 0.60 0.45 0.30
0.10 MAX
0.30 0.15 0.10 COPLANARITY
SEATING PLANE
0.15 MAX
0.50 0.30
SEATING PLANE
COMPLIANT TO JEDEC STANDARDS MO-203AA
COMPLIANT TO JEDEC STANDARDS MO-178AA
Figure 38. 5-Lead Thin Shrink Small Outline Transistor Package [SC-70] (KS-5) Dimensions shown in millimeters
Figure 39. 5-Lead Small Outline Transistor Package [SOT-23] (RJ-5) Dimensions shown in millimeters
ORDERING GUIDE
Model TMP05AKS-500RL7 TMP05AKS-REEL TMP05AKS-REEL7 TMP05ART-500RL7 TMP05ART-REEL TMP05ART-REEL7 TMP05BKS-500RL7 TMP05BKS-REEL TMP05BKS-REEL7 TMP05BRT-500RL7 TMP05BRT-REEL TMP05BRT-REEL7 TMP05AKSZ-500RL74 TMP05AKSZ-REEL4 TMP05AKSZ-REEL74 TMP05ARTZ-500RL74 TMP05ARTZ-REEL4 TMP05ARTZ-REEL74 TMP05BKSZ-500RL74 TMP05BKSZ-REEL4 TMP05BKSZ-REEL74 TMP05BRTZ-500RL74 TMP05BRTZ-REEL4 TMP05BRTZ-REEL74 Minimum Quantities/Reel 500 10000 3000 500 10000 3000 500 10000 3000 500 10000 3000 500 10000 3000 500 10000 3000 500 10000 3000 500 10000 3000 Temperature Range1 -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C Temperature Accuracy2 2C 2C 2C 2C 2C 2C 1C 1C 1C 1C 1C 1C 2C 2C 2C 2C 2C 2C 1C 1C 1C 1C 1C 1C Package Description 5-Lead SC-70 5-Lead SC-70 5-Lead SC-70 5-Lead SOT-233 5-Lead SOT-233 5-Lead SOT-233 5-Lead SC-70 5-Lead SC-70 5-Lead SC-70 5-Lead SOT-233 5-Lead SOT-233 5-Lead SOT-233 5-Lead SC-70 5-Lead SC-70 5-Lead SC-70 5-Lead SOT-233 5-Lead SOT-233 5-Lead SOT-233 5-Lead SC-70 5-Lead SC-70 5-Lead SC-70 5-Lead SOT-233 5-Lead SOT-233 5-Lead SOT-233 Package Option KS-5 KS-5 KS-5 RJ-5 RJ-5 RJ-5 KS-5 KS-5 KS-5 RJ-5 RJ-5 RJ-5 KS-5 KS-5 KS-5 RJ-5 RJ-5 RJ-5 KS-5 KS-5 KS-5 RJ-5 RJ-5 RJ-5 Branding T8A T8A T8A T8A T8A T8A T8B T8B T8B T8B T8B T8B T8C T8C T8C T8C T8C T8C T8D T8D T8D T8D T8D T8D
Rev. 0 | Page 25 of 28
TMP05/TMP06
Model TMP06AKS-500RL7 TMP06AKS-REEL TMP06AKS-REEL7 TMP06ART-500RL7 TMP06ART-REEL TMP06ART-REEL7 TMP06BKS-500RL7 TMP06BKS-REEL TMP06BKS-REEL7 TMP06BRT-500RL7 TMP06BRT-REEL TMP06BRT-REEL7 TMP06AKSZ-500RL74 TMP06AKSZ-REEL4 TMP06AKSZ-REEL74 TMP06ARTZ-500RL74 TMP06ARTZ-REEL4 TMP06ARTZ-REEL74 TMP06BKSZ-500RL74 TMP06BKSZ-REEL4 TMP06BKSZ-REEL74 TMP06BRTZ-500RL74 TMP06BRTZ-REEL4 TMP06BRTZ-REEL74 Minimum Quantities/Reel 500 10000 3000 500 10000 3000 500 10000 3000 500 10000 3000 500 10000 3000 500 10000 3000 500 10000 3000 500 10000 3000 Temperature Range1 -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C -40C to +150C Temperature Accuracy2 2C 2C 2C 2C 2C 2C 1C 1C 1C 1C 1C 1C 2C 2C 2C 2C 2C 2C 1C 1C 1C 1C 1C 1C Package Description 5-Lead SC-70 5-Lead SC-70 5-Lead SC-70 5-Lead SOT-233 5-Lead SOT-233 5-Lead SOT-233 5-Lead SC-70 5-Lead SC-70 5-Lead SC-70 5-Lead SOT-233 5-Lead SOT-233 5-Lead SOT-233 5-Lead SC-70 5-Lead SC-70 5-Lead SC-70 5-Lead SOT-233 5-Lead SOT-233 5-Lead SOT-233 5-Lead SC-70 5-Lead SC-70 5-Lead SC-70 5-Lead SOT-233 5-Lead SOT-233 5-Lead SOT-233 Package Option KS-5 KS-5 KS-5 RJ-5 RJ-5 RJ-5 KS-5 KS-5 KS-5 RJ-5 RJ-5 RJ-5 KS-5 KS-5 KS-5 RJ-5 RJ-5 RJ-5 KS-5 KS-5 KS-5 RJ-5 RJ-5 RJ-5 Branding T9A T9A T9A T9A T9A T9A T9B T9B T9B T9B T9B T9B T9C T9C T9C T9C T9C T9C T9D T9D T9D T9D T9D T9D
1
It is not recommended to operate the device at temperatures above 125C for more than a total of 5% (5,000 hours) of the lifetime of the device. Any exposure beyond this limit affects device reliability. A-Grade temperature accuracy is over the 0C to 70C temperature range and B-Grade temperature accuracy is over the +25C to 70C temperature range. 3 Consult sales for availability. 4 Z = Pb-free part.
2
Rev. 0 | Page 26 of 28
TMP05/TMP06 NOTES
Rev. 0 | Page 27 of 28
TMP05/TMP06 NOTES
(c) 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D03340-0-8/04(0)
Rev. 0 | Page 28 of 28

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