The AD694BQ from Analog Devices Inc. is a high-performance, monolithic current transmitter that converts a variable input signal into a proportional 4-20mA current suitable for sending over long distances in industrial environments. The AD694BQ is designed to simplify the task of transmitting analog signals over long wires, where resistance and noise can degrade signal quality.
Key Features:
- Two-Wire Operation: The device operates on a loop supply of 10 V to 36 V, with the transmitter and current loop powered by the same two wires.
- High Accuracy: The AD694BQ offers high accuracy with a nonlinearity of typically ±0.1%.
- Wide Input Range: It accepts an input signal range from 0 V to 10 V or 0 mA to 20 mA, making it versatile for various types of sensors and transducers.
- Temperature Stability: Excellent temperature stability ensures reliable operation over a wide temperature range.
- Easy Calibration: Span and zero adjustments are accessible for easy calibration without recalibrating the input source.
Applications:
The AD694BQ is ideal for industrial process control, factory automation, and remote sensor interfacing. Its robust design makes it suitable for harsh industrial environments where electromagnetic interference (EMI) and long-distance signal transmission are concerns.
Technical Specifications:
Parameter
Value
Supply Voltage
10 V to 36 V
Output Current Range
4 mA to 20 mA
Input Voltage Range
0 V to 10 V
Input Current Range
0 mA to 20 mA
Operating Temperature Range
-40°C to +85°C
For engineers and system designers looking for a reliable solution to transmit analog signals over long distances with minimal signal degradation, the AD694BQ provides a robust and accurate option backed by the trusted quality of Analog Devices Inc.
