AD8212

双通道音频差分放大器 Dual-Channel Audio Difference Amplifier

GENERAL DESCRIPTION

The is a high common-mode voltage, current shunt monitor. It accurately amplifies a small differential input voltage in the presence of large common-mode voltages up to 65 V >500 V with an external PNP transistor.

The AD8212 is ideal for current monitoring across a shunt resistor in applications controlling loads, such as motors and solenoids. The current output of the device is proportional to the input differential voltage. The user can select an external resistor to set the desired gain. The typical common-mode voltage range of the AD8212 is 7 V to 65 V.

FEATURES

  Adjustable gain

  High common-mode voltage range

     7 V to 65 V typical

     7 V to >500 V with external pass transistor

  Current output

  Integrated 5 V series regulator

  8-lead MSOP package

  Operating temperature range of −40°C to +125°C

APPLICATIONS

  Current shunt measurement

  Motor controls

  DC-to-DC converters

  Power supplies

  Battery monitoring

  Remote sensing