Product Summary
The AD694AQ is a monolithic current transmitter that accepts high level signal inputs to drive a standard 4–20 mA current loop for the control of valves, actuators, and other devices commonly used in process control. The input signal of the AD694AQ is buffered by an input amplifier that can be used to scale the input signal or buffer the output from a current mode DAC. Precalibrated input spans of 0 V to 2 V and 0 V to 10 V are selected by simple pin strapping; other spans may be programmed with external resistor.
Parametrics
AD694AQ absolute maximum ratings: (1)Supply Voltage: +36 V; (2)VS to IOUT: +36 V; (3)Input Voltage: –0.3 V to +36 V; (4)Reference Short Circuit to Common: Indefinite; (5)Alarm Voltage, Pin 10: +36 V; (6)4 mA Adj, Pin 6: +1 V; (7)4 mA On/Off, Pin 9: 0 V to 36 V; (8)Storage Temperature Range: –65℃ to +150℃; (9)Lead Temperature, 10 sec Soldering: +300℃; (10)Maximum Junction Temperature: +150℃; (11)Maximum Case Temperature Plastic Package (N, R): +125℃; (12)Cerdip Package (Q): +125℃.
Features
AD694AQ features: (1)4–20 mA, 0–20 mA Output Ranges; (2)Precalibrated Input Ranges: 0 V to 2 V, 0 V to 10 V; (3)Precision Voltage Reference. Programmable to 2.000 V or 10.000 V; (4)Single or Dual Supply Operation; (5)Wide Power Supply Range: +4.5 V to +36 V; (6)Wide Output Compliance; (7)Input Buffer Amplifier; (8)Open-Loop Alarm; (9)Optional External Pass Transistor to Reduce. Self-Heating Errors; (10)0.002% typ Nonlinearity.
Diagrams
Image | Part No | Mfg | Description | Pricing (USD) |
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AD694AQ |
IC SGNL COND 4-20MA TX 16-CDIP |
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Image | Part No | Mfg | Description | Pricing (USD) |
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AD693 |
Other |
Data Sheet |
Negotiable |
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AD693AD |
IC SGNL COND 4-20MA TX 20-CDIP |
Data Sheet |
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AD693AE |
IC SGNL COND 4-20MA TX 20-CLCC |
Data Sheet |
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AD693AQ |
IC TRANSMITTER 4-20MA 20-CDIP |
Data Sheet |
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AD694 |
Other |
Data Sheet |
Negotiable |
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AD694AQ |
IC SGNL COND 4-20MA TX 16-CDIP |
Data Sheet |
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