Analog Devices Inc. (Wilmington, MA) announced its new AD628 common-mode difference amplifier, which is suitable for many industrial applications, particularly those accepting inputs from various sensors, motor-drive interfaces and controllers, high-voltage current sensing, and sensor signal-conditioning applications. The high common-mode input impedance also makes the AD628 suitable for high-voltage measurements across a shunt resistor.
The AD628 can be adjusted to provide a gain range from 0.1 to 1,000 and is designed to accept ±140V inputs and drive the newest generation of single-supply, analog-to-digital or sigma-delta converters. Additionally, a dedicated output amplifier allows the designer to attenuate, level shift, filter and scale the output signal. The AD628 can also convert a bipolar input signal to a unipolar output. The AD628 has good ac and dc performance, providing 80dB of common-mode rejection from dc to 500Hz (minimum). It operates from either single or dual supplies from 5V to 15V.
The AD628 is packaged in an eight-lead SOIC and an eight-lead microSOIC, and is rated to work over the industrial temperature range of -40 to +85 degrees C. Samples are available now. Pricing is $3.45 per unit in 1,000-piece quantities. For additional information, please visit http://www.analog.com/amplifiers.
