PRODUCT DESCRIPTION

The AD694 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 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 in put 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 resistors.

FEATURES

4–20 mA, 0–20 mA Output Ranges

Precalibrated Input Ranges: 0 V to 2 V, 0 V to 10 V

Precision Voltage Reference

Programmable to 2.000 V or 10.000 V

Single or Dual Supply Operation

Wide Power Supply Range: 4.5 V to 36 V

Wide Output Compliance

Input Buffer Amplifier

Open-Loop Alarm

Optional External Pass Transistor to Reduce Self-Heating Errors

0.002 Typ Nonlinearity

AD694ARZ属于集成电路（IC） > 传感器和检测器接口。亚德诺半导体技术有限公司制造生产的AD694ARZ传感器和检测器接口该系列产品可执行信号调节、数据转换、激励生成和/或各种将传感器或变送器机构连接到主机设备所需的其他功能。示例包括用于 CCD 图像传感器的控制器、用于 4-20 mA 接口和类似应用的电流变送器、超声变送器前端、惠斯通电桥接口等。