GENERAL DESCRIPTION

The AD8209 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 common mode voltage range extends from −2 V to +45 V at a single +5 V supply. The AD8209 is qualified per AEC-Q100 specifications. The amplifier offers enhanced input overvoltage and ESD protection, and includes EMI filtering.

FEATURES

±8000 V HBM ESD

AEC-Q100 qualified

EMI filters included

High common-mode voltage range

−2 V to +45 V operating

−24 V to +80 V survival

Buffered output voltage

Gain = 14 V/V

Low-pass filter (single-pole or two-pole)

Wide operating temperature range

8-lead MSOP: −40°C to +125°C

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