AD694JNZ Analog Devices Inc, AD694JNZ Datasheet
AD694JNZ
Specifications of AD694JNZ
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AD694JNZ Summary of contents
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FEATURES 4–20 mA, 0–20 mA Output Ranges Precalibrated Input Ranges Precision Voltage Reference Programmable to 2.000 V or 10.000 V Single or Dual Supply Operation Wide Power Supply Range: ...
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AD694–SPECIFICATIONS Model INPUT CHARACTERISTICS Input Voltage Range Input Bias Current Either Input MIN MAX Offset Current MIN MAX Offset Current Drift Input Impedance OUTPUT CHARACTERISTICS Operating Current Range Specified Performance Output Voltage Compliance Output ...
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Model 6 BUFFER AMPLIFIER Input Offset Voltage Initial Offset MIN MAX vs. Supply vs. Common Mode Trim Range Frequency Response Unity Gain, Small Signal Input Voltage Noise (0 Hz) Open-Loop Gain ≥ 10 kΩ ...
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AD694 Typical Minimum Supply Voltage vs. Temperature for 2 V and 10 V Full Scale Maximum R vs. Supply Voltage L Voltage Reference Power Supply Rejection I : Voltage Compliance vs. Temperature OUT FUNCTIONAL DESCRIPTION The operation of the AD694 ...
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NPN pass transistor can be added to transfer most of the power dissipation off-chip, to extend the temperature range of operation. The output stage is current-limited at approximately protect the output from an overdrive at its ...
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AD694 An NPN boost transistor can be added in the 2 V mode to in- crease the current drive capability of the 2 V reference. The 10 V force pin is connected to the base of the NPN, and the ...
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Figure 4. Using Optional Pass Transistor to Minimize Self-Heating Errors; Dual Supply Operation Shown POWER DISSIPATION CONSIDERATIONS The AD694 is rated for operation over its specified temperature without the use of an external pass transistor. However possible to ...
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AD694 Figure 6 will give an approximately linear adjustment of the 4 mA offset within fixed limits. To find the proper resistor val- ues, first select X, the desired range of adjustment as a fraction of 4 mA. Substitute this ...
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Figure 8. Span Adjustment Full Scale PROGRAMMING OTHER SPANS There are two methods for programming input spans less than 10 V. The first decreases the input span by programming a non- inverting gain into the buffer amplifier. For ...
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AD694 Figure 11. Buffer Amplifier V APPLICATIONS CURRENT OUTPUT DAC INTERFACE The AD694 can be easily interfaced to current output DACs such as the AD566A to construct a digital to 4–20 mA interface as shown in Figure 13. The AD694 ...
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Figure 13. Digital to 4–20 mA Interface Using a Current Steering DAC Figure 14. Single-Supply Digital Input to 4–20 mA Output code dependent, and the response time of the circuit will be de- termined by the reaction of the voltage ...
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AD694 The circuit shown, will convert a positive differential signal 4–20 mA current. The circuit has common-mode range The low end of the common-mode range is limited by the ...
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Ceramic DIP-Glass Hermetic Seal Package [CERDIP] 5.08 (0.2000) MAX 5.08 (0.2000) 3.18 (0.1252) 0.58 (0.0228) 0.36 (0.0142) 5.33 (0.2098) 4.06 (0.1598) 2.93 (0.1154) 0.30 (0.0118) 0.10 (0.0039) COPLANARITY REV. B OUTLINE DIMENSIONS (Q-16) Dimensions shown in millimeters and (inches) ...
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AD694 Revision History Location 8/02—Data Sheet changed from REV REV. B. Updated Outline Dimensions . . . . . . . . . . . . . . . . . . . . . . . . ...
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REV. B –15– ...
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–16– ...