AD8203

The AD8203 is a single-supply difference amplifier for amplify-ing and low-pass filtering small differential voltages in the presence of a large common-mode voltage (CMV). The input CMV range extends from −6 V to +30 V at a typical supply voltage of 5 V.

The AD8203 is available in die and packaged form. The MSOP and SOIC packages are specified over a wide temperature range, from −40°C to +125°C, while the die is specified over a wider temperature range, from −40°C to +150°C, making the AD8203 well-suited for use in many automotive platforms.

Automotive platforms demand precision components for better system control. The AD8203 provides excellent ac and dc performance keeping errors to a minimum in the user's system. Typical offset and gain drift in the SOIC package are 0.3 V/°C and 1 ppm/°C, respectively. Typical offset and gain drift in the MSOP package are 2 V/°C and 1 ppm/°C, respectively. The device also delivers a minimum CMRR of 80 dB from dc to 10 kHz.

The AD8203 features an externally accessible 100 k resistor at the output of the Preamp A1, which can be used for low-pass filter applications and for establishing gains other than 14.