View X60008D-50_484837.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Precision 5.0V FGATM Voltage Reference
FEATURES * Output Voltage: 5.000V * Absolute Initial Accuracy Options: 0.5mV & 1.0mV * Ultra Low Power Supply Current: 500nA * Low Temperature Coefficient options: 5 & 10ppm/C * 10 mA Source & Sink Current Capability * 10 ppm/1000hrs Long Term Stability * Very Low Dropout Voltage: 100 mV @ no load * Supply Voltage Range: 5.1V to 9.0V * 5kV ESD (Human Body Model) * Standard Package: SOIC-8 * Temp Range: -40C to +85C APPLICATIONS * High Resolution A/Ds & D/As * Digital Meters * Calibration Systems * V-F Converters DESCRIPTION
X60008C-50 X60008D-50
The X60008-50 FGATM voltage references are very high precision analog voltage references fabricated in Xicor's proprietary Floating Gate Analog technology, which achieves superior levels of performance when compared to conventional band gap, buried zener, or XFETTM technologies. FGATM voltage references feature very high initial accuracy, very low temperature coefficient, excellent long term stability, low noise and excellent line and load regulation, at the lowest power consumption currently available. These voltage references enable advanced applications for precision industrial & portable systems operating at significantly higher accuracy and lower power levels than can be achieved with conventional technologies.
* Precision Current Sources
TYPICAL APPLICATION
VIN = +6.5V
w
w
.D w
VOUT X60008-50 GND VIN
t a
* Precision Regulators * Precision Oscillators * Battery Management Systems
S a
0.1F
e h
10F
t e
U 4
.c
m o
* Smart sensors * Strain Gage Bridges * Threshold Detectors * Servo Systems
0.001F(*)
REF IN Serial Bus Enable SCK SDAT 16 to 24-bit A/D Converter
() Also
*
see Figure 3 in Applications Information
REV 1.16 10/24/03
www.xicor.com
w
w
w
.D
a
aS t
ee h
4U t
om .c
1 of 14
X60008C-50, X60008D-50
PACKAGE DIAGRAM
X60008-XX SOIC GND VIN DNC GND 1 2 3 4 8 7 6 5 DNC DNC VOUT DNC
PIN CONFIGURATIONS Pin Name
GND VIN VOUT DNC Ground Connection Power Supply Input Connection Voltage Reference Output Connection Do Not Connect; Internal Connection - Must Be Left Floating
Description
ORDERING INFORMATION X 60008 C I S8 - 50
Logo Device Part Number Grade 60008 = Standard C = 0.5 mV, 5 ppm/C D = 1.0 mV, 10 ppm/C Temperature Range Package VOUT Option I = -40C to +85C S8 = 8 lead SOIC 50 = 5.000 V
REV 1.16 10/24/03
www.xicor.com
2 of 14
X60008C-50, X60008D-50
ABSOLUTE MAXIMUM RATINGS Storage Temperature Range ...........- 65C to + 125C Voltage on any Pin Referenced to Gnd........................... - 0.5V to + 10V Voltage on "DNC" pins .........No connections permitted to these pins. Lead Temperature (soldering, 10 secs) .......... + 225C RECOMMENDED OPERATING CONDITIONS Temperature
Industrial
COMMENT Absolute Maximum Ratings indicate limits beyond which permanent damage to the device and impaired reliability may occur. These are stress ratings provided for information only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification are not implied. For guaranteed specifications and test conditions, see Electrical Characteristics. The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test conditions.
Min.
-40C
Max.
+85C
ELECTRICAL CHARACTERISTICS (Operating Conditions: VIN = 6.5V, IOUT = 0mA, COUT = 0.001F, TA = -40 to +85C unless otherwise specified.) Symbol
VOUT VOA
Parameter
Output Voltage VOUT Accuracy X60008CIS8-50 X60008DIS8-50 Supply Current Input Voltage Range Output Voltage Temperature Coefficient(1) Line Regulation Load Regulation Long Term Stability Thermal Hysteresis(2) Dropout Voltage(3) Short Circuit Current(4) Output Voltage Noise
Conditions
TA = 25C
Min
Typ
5.000
Max
Units
V mV
-0.50 -1.00 500 5.1 X60008CIS8-50 X60008DIS8-50 +5.5V VIN +8.0V 0mA ISOURCE 10mA -10mA ISINK 0mA TA = 25C T = -40C to +85C IOUT = 5mA, VOUT = -0.01% TA = 25C 0.1Hz to 10Hz 15 25 10 50 150 50 30
+0.50 +1.00 800 9.0 5 10 100 50 100 nA V ppm/C V/V V/mA ppm/ 1000Hrs ppm 300 80 mV mA Vpp
IIN VIN TC VOUT VOUT/VIN VOUT/IOUT VOUT/t VOUT/TA VDO ISC VN
Note:
1. Over the specified temperature range. Temperature coefficient is measured by the box method whereby the change in VOUT is divided by the temperature range; in this case, -40C to +85C = 125C. 2. Thermal Hysteresis is the change in VOUT created by package stress @ TA = 25C after temperature cycling. VOUT is read initially at TA = 25C; the X60008 is then cycled between Hot (85C) and Cold (-40C) before a second VOUT measurement is taken at 25C. The deviation between the initial VOUT reading and the second VOUT reading is then expressed in ppm. 3. Dropout voltage (VDO) is the minimum voltage (VIN) into the X60008 which will produce the output voltage (VOUT) drop specified in the Electrical Characteristics table. 4. Guaranteed by Device Characterization
REV 1.16 10/24/03
www.xicor.com
3 of 14
X60008C-50, X60008D-50
TYPICAL PERFORMANCE CHARACTERISTIC CURVES (VIN = 6.5V, IOUT = 0mA, TA = 25C unless otherwise specified)
LINE REGULATION VOUT (V) (normalized to 5V at VIN = 6.5V)
350 5.0004
5 Typical Units
LINE REGULATION
5.0003 5.0002 5.0001 5.0000 4.9999 4.9998 4.9997 5 6 7 8 9
Delta Vo (V) (normalized to VIN = 6.5V)
300
-40C
250
25C
200 150 100
85C
50 0 -50 5 6 7 8 9
Vin (V)
Vin (V)
LOAD REGULATION
0.6 0.5
-40C
Delta VOUT (mV)
0.4 0.3 0.2 0.1 0 -0.1 -0.2 -0.3 -20 -15
85C
25C
-10
-5
0
5
10
15
20
SINKING
SOURCING
OUTPUT CURRENT (mA)
0.1Hz to 10Hz VOUT NOISE
Band Pass Filter with 1 zero at .1Hz and 2 poles at 10 Hz
5V/div
10 Sec/div
4 of 14
REV 1.16 10/24/03
www.xicor.com
X60008C-50, X60008D-50
TYPICAL PERFORMANCE CHARACTERISTIC CURVES (VIN = 6.5V, IOUT = 0mA, TA = 25C unless otherwise specified)
VOUT vs TEMPERATURE
5.0020
4 Typical Units
Normalized to 25C
PSRR vs CAP LOAD
0 -10 -20
CL=0
5.0015 5.0010
PSRR (dB)
CL=.001F
VOUT (V)
5.0005 5.0000 4.9995 4.9990 4.9985 4.9980 -40C -15C 10C +35C +60C +85C
-30 -40 -50
CL=.1F CL=.01F
-60 -70 -80 1 Hz 10 Hz 100Hz 1kHz 10kHz 100kHz 1 MHz
TEMPERATURE (C)
FREQUENCY (Hz)
10mA LOAD TRANSIENT RESPONSE
CL = .001F
10mA LOAD TRANSIENT RESPONSE
CL = .01F
200mV/DIV
200mV/DIV
IIN = -10mA IIN = +10mA
IIN = -10mA IIN = +10mA
500SEC/DIV
500SEC/DIV
10mA LOAD TRANSIENT RESPONSE
CL = .1F
200mV/DIV
IIN = -10mA IIN = +10mA
500SEC/DIV
REV 1.16 10/24/03
www.xicor.com
5 of 14
X60008C-50, X60008D-50
TYPICAL PERFORMANCE CHARACTERISTIC CURVES (VIN = 6.5V, IOUT = 0mA, TA = 25C unless otherwise specified)
50A LOAD TRANSIENT RESPONSE
CL = .001F
50A LOAD TRANSIENT RESPONSE
CL = .01F
50mV/DIV
IIN = -50A IIN = +50A
50mV/DIV
IIN = -50A IIN = +50A
100SEC/DIV 50A LOAD TRANSIENT RESPONSE
CL = .1F IIN = -50A
200SEC/DIV
20mV/DIV
IIN = +50A
1mSEC/DIV
REV 1.16 10/24/03
www.xicor.com
6 of 14
X60008C-50, X60008D-50
TYPICAL PERFORMANCE CHARACTERISTIC CURVES (VIN = 6.5V, IOUT = 0mA, TA = 25C unless otherwise specified)
LINE TRANSIENT RESPONSE
CL = 0
LINE TRANSIENT RESPONSE
CL = .001F
200mV/DIV
VIN = -500mV
VIN = +500mV
200mV/DIV
VIN = -500mV
VIN = +500mV
500SEC/DIV
500SEC/DIV
LINE TRANSIENT RESPONSE
CL = .01F
LINE TRANSIENT RESPONSE
CL = .1F
200mV/DIV
200mV/DIV
VIN = -500mV
VIN = +500mV
VIN = -500mV
VIN = +500mV
500SEC/DIV
500SEC/DIV
MINIMUM VIN to VOUT DIFFERENTIAL vs. OUTPUT CURRENT
0.50
500.0
+85C
Zout vs FREQUENCY
CL=.001F
VIN to VOUT Differential (V)
0.45 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0 0 -2 -4 -6 -8
400.0
+25C
Zout (Ohms)
CL=.01F
300.0
-40C
200.0
CL=.1F
100.0
-10
0.0
1
10
100
1k
10k
100k
OUTPUT CURRENT (mA)
REV 1.16 10/24/03
FREQUENCY (Hz)
www.xicor.com
7 of 14
X60008C-50, X60008D-50
TYPICAL PERFORMANCE CHARACTERISTIC CURVES (VIN = 6.5V, IOUT = 0mA, TA = 25C unless otherwise specified)
IIN vs VIN
900 800 700 500 600
+85C
700 600
IIN vs VIN
-40C +25C
IIN (nA)
IIN (nA)
5 units representative of IIN range
500 400 300
400 300 200 100
200 100 0
5.5
6
6.5
7
7.5
8
8.5
9
0
5.5
6
6.5
7
7.5
8
8.5
9
VIN (V)
VIN (V)
TURN-ON TIME
7 6
VIN
VIN & VOUT (V)
5 4
VOUT
3 2 1 0 0 2 4 6 8 10
TIME (mSec)
REV 1.16 10/24/03
www.xicor.com
8 of 14
X60008C-50, X60008D-50
APPLICATIONS INFORMATION FGA Technology The X60008 series of voltage references use the floating gate technology to create references with very low drift and supply current. Essentially the charge stored on a floating gate cell is set precisely in manufacturing. The reference voltage output itself is a buffered version of the floating gate voltage. The resulting reference device has excellent characteristics which are unique in the industry: very low temperature drift, high initial accuracy, and almost zero supply current. Also, the reference voltage itself is not limited by voltage bandgaps or zener settings, so a wide range of reference voltages can be programmed (standard voltage settings are provided, but customer-specific voltages are available). The process used for these reference devices is a floating gate CMOS process, and the amplifier circuitry uses CMOS transistors for amplifier and output transistor circuitry. While providing excellent accuracy, there are limitations in output noise level and load regulation due to the MOS device characteristics. These limitations are addressed with circuit techniques discussed in other sections. Nanopower Operation Reference devices achieve their highest accuracy when powered up continuously, and after initial stabilization has taken place. For example, power up drift on a high accuracy reference can reach 20ppm or more in the first 30 seconds, and generally will settle to a stable value in 100 hours or so. This drift can be eliminated by leaving the power on continuously. The X60008 is the first high precision voltage reference with ultra low power consumption that makes it possible to leave power on continuously in battery operated circuits. The X60008 consumes extremely low supply current due to the proprietary FGA technology. Supply current at room temperature is typically 500nA which is 1 to 2 orders of magnitude lower than competitive devices. Application circuits using battery power will benefit greatly from having an accurate, stable reference which essentially presents no load to the battery. In particular, battery powered data converter circuits that would normally require the entire circuit to be disabled when not in use can remain powered up between conversions as shown in figure 1. Data acquiBoard mounting Considerations For applications requiring the highest accuracy, board mounting location should be reviewed. Placing the device in areas subject to slight twisting can cause degradation of the accuracy of the reference voltage due to die stresses. It is normally best to place the device near the edge of a board, or the shortest side, as the axis of bending is most limited at that location. Obviously mounting the device on flexprint or extremely thin PC material will likewise cause loss of reference accuracy. Noise Performance and Reduction: The output noise voltage in a 0.1Hz to 10Hz bandwidth is typically 30Vp-p. This is shown in the plot in the Typical Performance Curves. The noise measurement is made with a bandpass filter made of a 1 pole highpass filter with a corner frequency at .1Hz and a 2-pole low-pass filter with a corner frequency at 12.6Hz to create a filter with a 9.9Hz bandwidth. Noise in the 10KHz to 1MHz bandwidth is approximately 400Vp-p with no capacitance on the output, as shown in Fig. 2 below. These noise measurements are made with a 2
9 of 14
sition circuits providing 12 to 24 bits of accuracy can operate with the reference device continuously biased with no power penalty, providing the highest accuracy and lowest possible long term drift. Other reference devices consuming higher supply currents will need to be disabled in between conversions to conserve battery capacity. Absolute accuracy will suffer as the device is biased and requires time to settle to its final value, or, may not actually settle to a final value as power on time may be short. Figure 1.
VIN = +6-9V 10F VIN 0.01F
VOUT X60008-50 GND 0.001F-0.01F REF IN Serial Bus Enable SCK SDAT 12 to 24-bit A/D Converter
REV 1.16 10/24/03
www.xicor.com
X60008C-50, X60008D-50
decade bandpass filter made of a 1 pole high-pass filter with a corner frequency at 1/10 of the center frequency and 1-pole low-pass filter with a corner frequency at 10 times the center frequency. Figure 2 also shows the noise in the 10KHz to 1MHz band can be reduced to about 50Vp-p using a .001F capacitor on the output. Noise in the 1KHz to 100KHz band can be further reduced using a 0.1F capacitor on the output, but noise in the 1Hz to 100Hz band increases due to instability of the very low power amplifier with a 0.1F capacitance load. For load capacitances above .001F the noise reduction network shown in fig. 3 is recommended. This network reduces noise significantly over the full bandwidth. As shown in fig. 2, noise is reduced to less than 40Vp-p from 1Hz to 1MHz using this network with a .01F capacitor and a 2Kohm resistor in series with a 10F capacitor. Figure 2.
X60008-50 NOISE REDUCTION
400 350 NOISE VOLTAGE (Vp-p) 300 250 200 150 100 50 0 1 10 100 1000 10000 100000
CL = 0 CL = .001F CL = .1F CL = .01F & 10F + 2kohm
mal turn-on time is typically 7ms. This is shown in the graph, Figure 4. Since devices can vary in supply current down to 300nA, turn-on time can last up to about 12ms. Care should be taken in system design to include this delay before measurements or conversions are started. Figure 4.
X60008-50 TURN-ON TIME (25C)
7 6 VIN & VOUT (V) 5 4 3
IIN = 320nA IIN = 730nA IIN = 500nA
2 1 0 -1 1 3 5 7 9 11 13 15
TIME (mSec)
Figure 3.
VIN = 6.5V 10F .1F VIN VO X60008-50 GND .01F 10F 2K
Temperature Coefficient The limits stated for temperature coefficient (tempco) are governed by the method of measurement. The overwhelming standard for specifying the temperature drift of a reference is to measure the reference voltage at two temperatures, take the total variation, (VHIGH - VLOW), and divide by the temperature extremes of measurement (THIGH - TLOW). The result is divided by the nominal reference voltage (at T=25C) and multiplied by 106 to yield ppm/C. This is the "Box" method for temperature coefficient which allows comparison of devices but can mislead a designer concerned about specific ranges of temperature (i.e., 35C to 65C for a power supply design). The designer may infer the tempco to be a well-behaved flat line slope, similar to that shown in Figure 5. The slope of the Vout vs. temperature curve at points in-between the extremes can actually be much higher than the tempco stated in the specifications due to multiple inflections in the temperature drift curve. Most notably, bandgap devices may have some type of "s-curve" which will have slopes that exceed the average specified tempco by 2x or 3x.
Turn-On Time The X60008 devices have ultra-low supply current and thus the time to bias up internal circuitry to final values will be longer than with higher power references. Nor-
REV 1.16 10/24/03
www.xicor.com
10 of 14
X60008C-50, X60008D-50
Figure 5. Flat Line Slope Tempco Curves (Vout = 5V)
Tempco (Normalized to +25C) 4000V Change in VOUT
10ppm/C
2000V 0V -2000V -4000V -40C 25C Temperature
1ppm/C 3ppm/C 5ppm/C 10ppm/C
5ppm/C 3ppm/C 1ppm/C
The tempco curve for the X60008 devices is generally flat (within 0.5ppm/C typically) over the industrial temperature range (-40 to 85C) with some inflection at the extreme temperatures. The combination of very low tempco performance a predictable tempco slope is unique to the X60008 due to its floating gate technology. This behavior is much easier to consider when designing data conversion systems or control systems that must operate over a range of temperatures.
85C
REV 1.16 10/24/03
www.xicor.com
11 of 14
X60008C-50, X60008D-50
TYPICAL APPLICATION CIRCUITS
Precision 5V, 50mA Reference.
VIN = 6V-9V R = 200 2N2905 VIN X60008-50 VOUT GND 5.0V/50mA 0.009F
5.0V Dual Output, High Accuracy Reference
+5.3-9.0V
0.1F VIN X60008-50 VOUT GND 0.001F
5.0V
VIN X60008-50 VOUT GND R1 -VIN = -5.5V to -9.0V -5.0V 0.001F R1 = 5.0V-VIN ; IOUT 10mA IOUT
Kelvin Sensed Load
+5.3-9.0V 0.1F VIN VOUT X60008-50 GND + - Load VOUT Sense
REV 1.16 10/24/03
www.xicor.com
12 of 14
X60008C-50, X60008D-50
TYPICAL APPLICATION CIRCUITS
Negative Voltage Reference
X60008-50 R VIN VOUT GND CIN 0.001 COUT = 0.001F -5.0V R1 = 200 -9V R1 Limits max load current with RI = 200; ILOAD MAX = 4mA
5V Full Scale Low-Drift 10-bit Adjustable Voltage Source
5.3-9.0V 0.1F VIN VOUT X60008-50 GND
0.01F VCC RH X9119 2-Wire Bus SDA SCL VSS RL + - VOUT (buffered) VOUT
REV 1.16 10/24/03
www.xicor.com
13 of 14
X60008C-50, X60008D-50
PACKAGING INFORMATION
8-Lead Plastic, SOIC, Package Code S8
0.150 (3.80) 0.228 (5.80) 0.158 (4.00) 0.244 (6.20) Pin 1 Index Pin 1
0.014 (0.35) 0.019 (0.49) 0.188 (4.78) 0.197 (5.00) (4X) 7
0.053 (1.35) 0.069 (1.75) 0.004 (0.19) 0.010 (0.25)
0.050 (1.27)
0.010 (0.25) X 45 0.020 (0.50)
0.050" Typical
0 - 8 0.0075 (0.19) 0.010 (0.25) 0.016 (0.410) 0.037 (0.937) 0.250"
0.050" Typical
FOOTPRINT NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS)
0.030" Typical 8 Places
LIMITED WARRANTY
(c)Xicor, Inc. 2003 Patents Pending
Devices sold by Xicor, Inc. are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. Xicor, Inc. makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Xicor, Inc. makes no warranty of merchantability or fitness for any purpose. Xicor, Inc. reserves the right to discontinue production and change specifications and prices at any time and without notice. Xicor, Inc. assumes no responsibility for the use of any circuitry other than circuitry embodied in a Xicor, Inc. product. No other circuits, patents, or licenses are implied. TRADEMARK DISCLAIMER: Xicor and the Xicor logo are registered trademarks of Xicor, Inc. AutoStore, Direct Write, Block Lock, SerialFlash, MPS, BiasLock and XDCP are also trademarks of Xicor, Inc. All others belong to their respective owners. U.S. PATENTS Xicor products are covered by one or more of the following U.S. Patents: 4,326,134; 4,393,481; 4,404,475; 4,450,402; 4,486,769; 4,488,060; 4,520,461; 4,533,846; 4,599,706; 4,617,652; 4,668,932; 4,752,912; 4,829,482; 4,874,967; 4,883,976; 4,980,859; 5,012,132; 5,003,197; 5,023,694; 5,084,667; 5,153,880; 5,153,691; 5,161,137; 5,219,774; 5,270,927; 5,324,676; 5,434,396; 5,544,103; 5,587,573; 5,835,409; 5,977,585. Foreign patents and additional patents pending. LIFE RELATED POLICY In situations where semiconductor component failure may endanger life, system designers using this product should design the system with appropriate error detection and correction, redundancy and back-up features to prevent such an occurrence. Xicor's products are not authorized for use in critical components in life support devices or systems. 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. 2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
REV 1.16 10/24/03
www.xicor.com
Characteristics subject to change without notice.
14 of 14

▲Up To Search▲

Price & Availability of X60008D-50

	To Download X60008D-50 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .