AD628 Datasheet PDF - ADI

GENERAL DESCRIPTION

●The AD628 is a precision difference amplifier that combines excellent dc performance with high common-mode rejection over a wide range of frequencies. When used to scale high voltages, it allows simple conversion of standard control voltages or currents for use with single-supply ADCs. A wideband feedback loop minimizes distortion effects due to capacitor charging of Σ-Δ ADCs.

●FEATURES

●High common-mode input voltage range

●  ±120 V at VS= ±15 V

●Gain range 0.1 to 100

●Operating temperature range: −40°C to ±85°C

●Supply voltage range

●  Dual supply: ±2.25 V to ±18 V

●  Single supply: 4.5 V to 36 V

●Excellent ac and dc performance

●Offset temperature stability RTI: 10 μV/°C maximum

●Offset: ±1.5 V mV maximum

●CMRR RTI: 75 dB minimum, dc to 500 Hz, G = +1

●APPLICATIONS

●High voltage current shunt sensing

●Programmable logic controllers

●Analog input front end signal conditioning

●  +5 V, +10 V, ±5 V, ±10 V, and 4 to 20 mA

●Isolation

●Sensor signal conditioning

●Power supply monitoring

●Electrohydraulic control

●Motor control