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DISCRETE SEMICONDUCTORS
DATA SHEET
UZZ9000 Sensor Conditioning Electronic
Product specification Supersedes data of 2000 May 19 2000 Nov 27
Philips Semiconductors
Product specification
Sensor Conditioning Electronic
FEATURES * One chip fully integrated signal conditioning IC * Accuracy better than 1 together with KMZ41 in 100 angle range * Temperature range from -40 to 150 C * Adjustable angle range * Adjustable zero point. GENERAL DESCRIPTION The UZZ9000 is an integrated circuit that combines two sinusoidal signals (sine and cosine) into one single linear output signal. When used in conjunction with the magnetoresistive sensor KMZ41 it provides a measurement system for angles up to 180. The UZZ9000 can also be used for other applications in which an angle has to be calculated from a sine and a cosine signal. A typical application would be any kind of resolver application. The two input signals are converted into the digital domain with two separate AD-converters. A CORDIC algorithm performs the inverse tangent transformation. Since today's applications typically require analog output signals (e.g. potentiometers), the resulting signal is transferred back to the analog domain. The UZZ9000 enables the user to set both the angle range and the zero point offset. These ranges are set by external voltage dividers. PINNING SYMBOL +VO2 +VO1 VDD2 VSS GND RST TEST1 TEST2 DATA_CLK SMODE TEST3 VOUT Var Voffin OFFS2 OFFS1 VDDA GND TEST4 TEST5 VDD1 Tout -VO2 -VO1 Notes 1. Connected to ground. 2. Pin to be left unconnected. QUICK REFERENCE DATA SYMBOL VDDA VDD1 VDD2 ICCtot A A Note 1. VDDA, VDD1 and VDD2 must be connected to the same supply voltage. PARAMETER supply voltage supply voltage supply voltage total supply current angle range accuracy in 10 steps with KMZ41 with ideal input signal; range = 100 note 1 note 1 note 1 CONDITIONS MIN. 4.5 4.5 4.5 - 30 0.45 5 5 5 13 - - TYP. PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
UZZ9000
DESCRIPTION sensor 2 positive differential input sensor 1 positive differential input digital supply voltage digital ground analog ground reset of the digital part; note 1 for production test; note 1 note 2 trim-mode data-clock; note 1 serial mode programmer; note 1 note 2 output voltage angle-range input set offset input set offset trimming input sensor 2 offset trimming input sensor 1 analog supply voltage analog ground for production test; note 1 for production test; note 1 digital supply voltage test output sensor 2 negative differential input sensor 1 negative differential input
MAX. 5.5 5.5 5.5 15 180 - V V V
UNIT
mA deg deg
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 60134). SYMBOL VDDA VDD1 VDD2 Vpin Tstg Tj PARAMETER supply voltage supply voltage supply voltage voltage at all pins storage temperature operating temperature 125 to 150 C; max 200 hours CONDITIONS MIN. -0.3 -0.3 -0.3 -0.3 -55 -40
UZZ9000
MAX. +6 +6 +6 VDD +150 +150 V V V V
UNIT
C C
THERMAL CHARACTERISTICS SYMBOL Rth j-a PARAMETER thermal resistance from junction to ambient VALUE 80 UNIT K/W
ESD SENSITIVITY SYMBOL ESD PARAMETER ESD sensitivity CONDITIONS human body model machine model VALUE 2 150 UNIT kV V
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
UZZ9000
ELECTRICAL CHARACTERISTICS Tamb = -40 to +150 C; VDD = 4.5 to 5.5 V; typical characteristics for Tamb = 25 C and VDD = 5 V unless otherwise specified. SYMBOL VDDA VDD1 VDD2 IDD (+VO)-(-VO) PARAMETER supply voltage supply voltage supply voltage supply current differential input voltage common mode range lost magnet threshold fext fint Cload external clock frequency internal clock frequency output load with series resistance >300 Vreset switching voltage threshold between falling and for power on/off rising VDD hysteresis Vout Vd A Res ton tr VLM output voltage range for valid ranges diagnostic area accuracy resolution power up time response time sensor voltage to 95% of final value lost magnet threshold lower bound upper bound for irregular input signal with ideal input signal; range = 100 range = 100 without load referred to VDD referred to VDD referred to VDD for trim interface Tj = -40 to 150 C CONDITIONS MIN. 4.5 4.5 4.5 - 6.6 490 - 0.1 2.3 - - 2.8 - 5 94 0 96 0.45 0.1 - - 12 5 5 5 10 - - 3 - 4 - - - 0.3 - - - - - - - 0.7 15 TYP. MAX. 5.5 5.5 5.5 15 28 510 - 1 5.7 50 200 4.5 - 6 95 4 100 - - 20 1.2 20 % VDD % VDD % VDD % VDD degree degree ms ms mV V V V mA mV/V mV/V mV/V MHz MHz pF nF V UNIT
FUNCTIONAL DESCRIPTION The UZZ9000 is a mixed signal IC for angle measurement systems. The UZZ9000 has been designed for the double sensor KMZ41. It combines two analog signals (sine and cosine) into a linear output signal. The analog measurement signals on the IC input are converted to digital data by two ADC's. Each ADC is a Sigma-Delta modulator employing a 4th order continuous time architecture with an over-sampling ratio of 128 to achieve high resolution. The converter output is a digital bit-stream with an over-sampling frequency of typically 500 kHz. The bit-stream is fed into a decimation filter which
performs both low pass filtering and down-sampling. The IC has two input channels each of which has its own ADC and decimation filter. The two decimation filter outputs are 15-bit digital words at a lower frequency of typically 3.9 kHz which is the typical sampling frequency of the sensor system. The digital representations of the two signals are then used to calculate the current angle by the ALU. This calculation is carried out using the so-called CORDIC algorithm. The angle is represented by a 13-bit resolution. A DAC converts the digital signal back to the analog domain.
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
UZZ9000
handbook, full pagewidth
+VO1 -VO1
ADC1
DECIMATION FILTER
ALU
DAC
output
+VO2 -VO2
ADC2
DECIMATION FILTER
angle range CONTROL RESET offset DATA-CLK SMODE
UZZ9000
OSCILLATOR
MHB694
reset
Fig.1 Block diagram.
The following list gives a short description of the relevant block functions: 1. The ADC block contains two Sigma Delta AD converters, sensor offset correction circuitry and the circuitry required for the sensitivity and offset adjustment of the chip output voltage curve. 2. The decimation filter block comprises two digital low pass decimation filters convert the low resolution high speed bit stream output from the ADC's into a low speed digital word. 3. The ALU block derives an angle value from the two digital inputs using the CORDIC algorithm. 4. The DAC converts the output of the ALU block to an analog signal. 5. The CONTROL block provides the clock and the control signals for the chip. 6. The RESET block supplies a reset signal during power-up and power-down when the power supply is below a certain value. 7. The Oscillator generates the master clock.
Angle range selection In order to accommodate varying applications, both the mechanical input angular range of the UZZ9000 and the zero point of the output curve are user programmable. This section describes how to select a desired mode. The output curve is adjusted by changing the angular range as shown in Fig.2. Without any zero point offset, the ramp-up starts at mechanical 0 (1 = 0). When using a KMZ41 sensor, the maximum angular range is 0 to 180. For the UZZ9000, smaller angular ranges can be set. In this case, 2 becomes smaller than 180 and the output curve is clipped at this position. The location of discontinuity XD (change from lower to upper clipping area) depends on the adjusted range and can be calculated as follows: 180 - X D = + -------------------------2 In order to compensate for tolerances, the zero point of the output curve can be shifted by 5 in steps of 0.5. The effect of this measure is shown in Fig.3. Now 1 is no longer identical with mechanical 0, but with the zero point shift Xoff. Consequently, the location of discontinuity XD can be calculated as follows: 180 - X D = x off + + -------------------------2
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
UZZ9000
handbook, full pagewidth
1 Vout
2
0
180(360)
/
MHB695
When using MR sensors (KMZ41), the signal period is 0 to 180 as the signals are proportional to sin2 and cos2.
Fig.2 Output curve for different angular ranges.
handbook, full pagewidth
1 Xoff Vout
2
0
180(360)
/
MHB696
When using MR sensors (KMZ41), the signal period is 0 to 180 as the signals are proportional to sin2 and cos2.
Fig.3 Output curve for different angular ranges including a zero point offset.
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
Angle range setting To select one of 16 different angular ranges, an external voltage (see Table 1) must be applied to pin 13 of the UZZ9000 (Var). During the ICs initialisation phase, which directly follows power-on reset or an external reset, this voltage is read and then converted into the digital domain. The digital value is stored until the next reset state occurs. Consequently, the angular range cannot be changed during normal operation but is still fixed after initialisation phase. Note that the voltage at pin 13 must be ratiometric to VDDA and also stable over temperature and lifetime. This is ensured, for instance, when providing this voltage via a (trimmable) resistor divider connected to VDDA, which is the analog supply of the UZZ9000. The following defines the % value of the supply voltage VDDA that must be supplied to pin 13 to select a certain range. When using the 30 angular range, a constant zero point offset of 15 is added. Consequently, when using the 30 range, the zero point offset can be programmed between 10 and 20 only (see Zero point offset setting). Table 1 Definition of voltages to set UZZ9000 angular ranges MIN. (%) 33.47 35.69 37.91 40.14 42.36 44.58 46.80 49.02 51.25 53.47 55.69 57.91 60.13 62.36 64.58 66.80 NOM. (%) 33.73 35.95 38.17 40.40 42.62 44.84 47.06 49.28 51.51 53.73 55.95 58.17 60.39 62.62 64.84 67.06 MAX. (%) 33.99 36.21 38.43 40.66 42.88 45.10 47.32 49.54 51.77 53.99 56.21 58.43 60.65 62.88 65.10 67.32 UNIT (%) VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA Offset trimming
UZZ9000
previously. After reset the voltage is read, converted into the digital domain and then stored until another reset state occurs. Consequently, the zero point offset cannot be adjusted without a reset. It is recommended to use a resistor divider connected to VDDA to generate this voltage. Table 2 defines the allowed voltage ranges as a percentage of the supply VDDA. Table 2 Definition of voltages to set a certain zero point offset MIN. (%) 33.47 35.14 36.80 38.47 40.13 41.80 43.47 45.13 46.80 48.60 50.13 51.80 53.46 64.58 56.79 58.46 60.13 61.79 63.46 65.12 66.79 NOM. (%) 33.73 35.40 37.06 38.73 40.39 42.06 43.73 45.39 47.06 48.72 50.39 52.06 53.72 55.39 57.05 58.72 60.39 62.05 63.72 65.38 67.05 MAX. (%) 33.99 35.66 37.32 38.99 40.65 42.32 43.99 45.65 47.32 48.98 50.65 52.32 53.98 55.65 57.31 58.98 60.65 62.31 63.98 65.64 67.31 UNIT (%) VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA VDDA
ZERO POINT OFFSET () -5 -4.5 -4 -3.5 -3 -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
ANGULAR RANGE () 0 to 30 0 to 40 0 to 50 0 to 60 0 to 70 0 to 80 0 to 90 0 to 100 0 to 110 0 to 120 0 to 130 0 to 140 0 to 150 0 to 160 0 to 170 0 to 180
Zero point offset setting To adjust the zero point offset or to set it to 0, an external voltage has to be applied to the UZZ9000 at pin 14 (VOFFIN). The function is similar to that described 2000 Nov 27 7
To achieve a linear output characteristic, it is necessary to adapt the offsets of the two input signals to the input stage of the UZZ9000. For this reason a sensor offset cancellation procedure has been implemented in the UZZ9000 which is started by sending a special serial data protocol to the UZZ9000. This trimming procedure is required for both input signals.
Philips Semiconductors
Product specification
Sensor Conditioning Electronic
Trim interface The serial interface used to switch the UZZ9000 into trim mode consists of the two terminals SMODE (pin 10) and DATA_CLK (pin 9). The structure of this protocol is shown in Fig.4. All signal levels at DATA_CLK and SMODE must be selected according to the requirements listed in Table 3. The following points must be taken into account with regard to the asynchronous protocol. The protocol starts with a falling edge at the SMODE,
UZZ9000
which must occur at a high DATA_CLK level. The following five bits are used to code the message sent to the UZZ9000. They are transferred via the SMODE and are sampled with the rising edge of the DATA_CLK. During the fifth high level output of DATA_CLK (counted from the start condition onwards), a rising edge must appear at the SMODE and the DATA_CLK follows this with one more change to low level in order to successfully complete the protocol.
handbook, full pagewidth start
condition 1 DATA_CLK (input at pin 9) 2
status bit 3 4 5
stop condition
SMODE (input at pin 10) T1 TOUT (output at pin 22) T0
MHB697
Fig.4 Protocol used to set UZZ9000 into trim mode.
Table 3
Definition of the trim interface signals PARAMETER MIN. 4.5 0 95 8 0.1 - - - - - 1 NOM. 5 MAX. 5.5 5 100 UNIT V %VDD %VDD ns MHz
UZZ9000 supply voltage low level of DATA_CLK, SMODE high level of DATA_CLK, SMODE rise and fall time of DATA_CLK and SMODE signal edges (10 to 90% VDD) and (90 to 10% VDD) DATA_CLK frequency How to enter the trim mode
The status bits to be transmitted to the UZZ9000 are shown in Table 4. Note that a complete protocol has to be sent before normal operation can be resumed. The trim mode can also be exited by resetting the device. After entering one of the trim modes and provided there is a dynamic input signal, a square wave output is visible at the terminal TOUT (pin 22).
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
Table 4 Programming of trim modes STATUS BITS MODE 1 enter trim mode for sensor input channel 1 enter trim mode for sensor input channel 2 leave trim mode for either input channel Reset In addition to the external reset pin (pin 6), the UZZ9001 provides an internal power-up/ power-down reset logic which continuously monitors the supply voltage. When the supply voltage increases and reaches a safe level, reset becomes inactive and the device starts initialization. When the supply voltage exceeds the safe voltage level, the device is reset immediately. This internal reset logic can be over-ridden by the external pin RES (pin 6) in all modes and at any time. The reset pin RES (pin 6) is active when in the high position. It is internally pulled to ground and therefore need not be connected if the function is not required. Diagnostic The UZZ9000 provides powerful diagnostics features that allow the user to recognize certain failures of the device or system. A failure will occur when the output voltage VOUT either rises above or falls below the normal operation range. Either one of the diagnostic areas is reached during any of the following conditions 1. Short circuit between VOUT and GND (R < 1 ). 2. Short circuit between VOUT and VDD (R < 1 ). 3. Disconnection of VDD when the load is pulled down. 4. Disconnection of GND when the load is pulled up. 5. Invalid input signal from the sensor, e.g. Magnet Lost. This failure is assumed when the offset corrected input signal of sensor 1 and sensor 2 is below 15 mV. The internal pull-up and pull-down resistors in the output buffer block ensure that VOUT will be pulled to one of the power supplies when the other supply is disconnected so VOUT reaches the diagnostic region even when there is no output load. If the external load is a pull-down resistor, then 0 0 0 2 0 0 0 3 0 1 0 4 1 0 0
UZZ9000
5 0 0 0
the device enters into the diagnostic area if VDD is disconnected, but not if VSS is disconnected. Similarly, if the load is a pull-up resistor, then the device will enter the diagnostic area if VSS is disconnected, but not if VDD is disconnected. It is not necessary to connect an output load to the UZZ9000. After recovering from short circuit to ground or supply voltage, the chip returns undamaged to the normal operation mode. There is no time limitation regarding short circuit of VOUT. Measurement dynamics The UZZ9000 includes an on-chip RC Oscillator that generates the clock for the whole device. Consequently, no external clock supply is required for the measurement system. The nominal clock frequency of the on-chip oscillator is 4 MHz at room temperature. It varies with temperature change. At -40 C the clock frequency may decrease to 2.3 MHz. At higher temperatures however, a frequency up to 5.7 MHz may be reached. This influences the dynamics of measurements. From an application point of view, two different effects have to be distinguished: The system delay, which means how long it takes until a changed input signal is recognized at the output, and the measurement update rate. The system delay is mainly caused by the settling time of the low pass decimation filter, which depends on the maximum frequency content (shape) of the input signals and the clock frequency. The following maximum values can be expected for the entire system delay. The measurement update rate, however, is directly related to the oscillator frequency. At room temperature, a new value is available every 0.26 ms. When taking the entire temperature range into account, update rates between 0.45 and 0.18 ms are possible. (see Table 5).
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
Table 5 System delay and update rates of the UZZ9000 PARAMETER system delay (time elapsed until 95% of the final value is reached) max. signal frequency < 200 MHz transients (step response) measurement update rate -40 C 25 C (room temperature) 150 C 0.45 - - - 0.26 - - - 0.18 - - - - 0.6 1.2 MIN. TYP. MAX.
UZZ9000
UNIT ms ms ms ms ms
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
PACKAGE OUTLINE SO24: plastic small outline package; 24 leads; body width 7.5 mm
UZZ9000
SOT137-1
D
E
A X
c y HE vMA
Z 24 13
Q A2 A1 pin 1 index Lp L 1 e bp 12 wM detail X (A 3) A
0
5 scale
10 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT mm inches A max. 2.65 0.10 A1 0.30 0.10 A2 2.45 2.25 A3 0.25 0.01 bp 0.49 0.36 c 0.32 0.23 D (1) 15.6 15.2 0.61 0.60 E (1) 7.6 7.4 0.30 0.29 e 1.27 0.050 HE 10.65 10.00 L 1.4 Lp 1.1 0.4 Q 1.1 1.0 0.043 0.039 v 0.25 0.01 w 0.25 0.01 y 0.1 0.004 Z
(1)
0.9 0.4 0.035 0.016
0.012 0.096 0.004 0.089
0.019 0.013 0.014 0.009
0.419 0.043 0.055 0.394 0.016
8o 0o
Note 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. OUTLINE VERSION SOT137-1 REFERENCES IEC 075E05 JEDEC MS-013 EIAJ EUROPEAN PROJECTION
ISSUE DATE 97-05-22 99-12-27
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
DATA SHEET STATUS DATA SHEET STATUS Objective specification PRODUCT STATUS Development DEFINITIONS (1)
UZZ9000
This data sheet contains the design target or goal specifications for product development. Specification may change in any manner without notice. This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product. This data sheet contains final specifications. Philips Semiconductors reserves the right to make changes at any time without notice in order to improve design and supply the best possible product.
Preliminary specification
Qualification
Product specification
Production
Note 1. Please consult the most recently issued data sheet before initiating or completing a design. DEFINITIONS Short-form specification The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook. Limiting values definition Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make no representation or warranty that such applications will be suitable for the specified use without further testing or modification. DISCLAIMERS Life support applications These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips Semiconductors customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application. Right to make changes Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for the use of any of these products, conveys no licence or title under any patent, copyright, or mask work right to these products, and makes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified.
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
NOTES
UZZ9000
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
NOTES
UZZ9000
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Philips Semiconductors
Product specification
Sensor Conditioning Electronic
NOTES
UZZ9000
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Internet: http://www.semiconductors.philips.com
SCA 70
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Printed in The Netherlands
613520/04/pp16
Date of release: 2000
Nov 27
Document order number:
9397 750 07783

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