AD688ARWZ Analog Devices Inc, AD688ARWZ Datasheet
AD688ARWZ
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AD688ARWZ Summary of contents
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FEATURES ±10 V tracking outputs Kelvin connections Low tracking error: 1.5 mV Low initial error: 2.0 mV Low drift: 1.5 ppm/°C Low noise: 6 μV p-p Flexible output force and sense terminals High impedance ground sense Wide body SOIC and ...
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... Pin Configuration and Function Descriptions............................. 5 Theory of Operation ........................................................................ 6 Applications....................................................................................... 7 Calibration..................................................................................... 7 Noise Performance and Reduction ............................................ 8 REVISION HISTORY 3/05—Rev Rev. B Updated Format..................................................................Universal Added AD688ARWZ .........................................................Universal Removed AD688SQ ...........................................................Universal Updated Outline Dimensions ....................................................... 13 Changes to Ordering Guide .......................................................... 13 Turn On Time................................................................................8 Temperature Performance............................................................9 Kelvin Connections.......................................................................9 Dynamic Performance............................................................... 11 Bridge Driver Circuit ...
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... V. S Rev Page AD688ARWZ Max Min Typ Max Unit +2 − +1.5 −1.5 +1.5 ppm/°C +1.5 +3 –8 +8 ppm/°C ±5 mV 150 kΩ +200 –200 +200 µV/V ± ...
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AD688 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Rating +V to − Power Dissipation (25°C) Q Package 600 mW Storage Temperature −65°C to +150°C Lead Temperature +300°C (Soldering Package Thermal Resistance Q (θ /θ ) ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic Description 1 +10 V OUT FORCE +10 V Output with Kelvin Force. Connect to Pin Positive Power Supply +10 V OUT SENSE ...
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AD688 THEORY OF OPERATION The AD688 consists of a buried Zener diode reference, amplifiers and associated thin-film resistors as shown in Figure 3. The temperature compensation circuitry provides the device with a temperature coefficient of 1.5 ppm/°C or less. Amplifier ...
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APPLICATIONS The AD688 can be configured to provide ±10 V reference outputs as shown in Figure 4. The architecture of the AD688 provides ground sense and uncommitted output buffer amplifiers which offer the user a great deal of functional flexibility. ...
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AD688 NOISE PERFORMANCE AND REDUCTION The noise generated by the AD688 is typically less than 6 µV p-p over the 0 band. Noise MHz bandwidth is approximately 840 µV p-p. The dominant source ...
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... Rev Page MAXIMUM OUTPUT CHANGE (mV) DEVICE GRADE 0 TO +70°C –40°C TO +85°C AD688AQ 1.40 (TYP) AD688BQ 1.05 AD688ARWZ Figure 12. Maximum + −10 V Output Change ) at the load. The Kelvin connection of Figure 13b and the voltage at the load would be the desired ERROR 10V – ...
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AD688 100 80 GAIN 60 40 PHASE 20 0 –20 10 100 1k 10k 100k FREQUENCY (Hz) Figure 14. A3, A4 Open-Loop Frequency Response 110 V V 100 100 1k 10k FREQUENCY (Hz) Figure ...
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DYNAMIC PERFORMANCE The output buffer amplifiers (A3 and A4) are designed to provide the AD688 with static and dynamic load regulation superior to less complete references. Many A/D and D/A converters present transient current loads to the reference, and poor ...
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AD688 V OUT A4 1kΩ + 10V 10V V L – 0V Figure 27. Load Crosstalk Test Circuit 1mV 5V 100 90 V OUT Figure 28. Load Crosstalk Attempts to drive a large capacitive load (in ...
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... COPLANARITY ORDERING GUIDE Initial Temperature Model Error Coefficient AD688AQ ppm/°C AD688BQ ppm/°C 1 AD688ARWZ ppm/° Pb-free part. 0.005 0.098 (2.49) 0.310 (7.87) (0.13) MAX MIN 0.220 (5.59 PIN 1 0.060 (1.52) 0.840 (21.34) MAX ...
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AD688 NOTES Rev Page ...
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NOTES Rev Page AD688 ...
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AD688 NOTES © 2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C00815-0-3/05(B) Rev Page ...