GENERAL DESCRIPTION

The AD8208 is a single-supply difference amplifier ideal for amplifying and low-pass filtering small differential voltages in the presence of a large common-mode voltage. The input commonmode voltage range extends from −2 V to +45 V at a single +5 V supply. The AD8208 is qualified for automotive applications. The amplifier offers enhanced input overvoltage and ESD protection, and includes EMI filtering.

FEATURES

Qualified for automotive applications

EMI filters included

High common-mode voltage range

−2 V to +45 V operating

−24 V to +80 V survival

Buffered output voltage

Gain = 20 V/V

Low-pass filter (1-pole or 2-pole)

Wide operating temperature range

−40°C to +125°C for WB grade

−40°C to +150°C for WH grade

Excellent ac and dc performance

±1 mV voltage offset

−5 ppm/°C typical gain drift

80 dB CMRR minimum dc to 10 kHz

APPLICATIONS

High-side current sensing

Motor controls

Solenoid controls

Power management

Low-side current sensing

Diagnostic protection