AD8208

The AD8208 is qualified for automotive applications. The amplifier offers enhanced input overvoltage and ESD protection, and includes EMI filtering. Automotive applications demand robust, precision components for improved system control. The AD8208 features an externally accessible 100 k resistor at the output of the preamplifier (A1), which can be used for lowpass filtering and for establishing gains other than 20. 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 provides excellent ac and dc performance, minimizing errors in the application. Typical offset and gain drift in both the SOIC and MSOP packages are less than 5 V/°C and 10 ppm/°C, respectively. The device also delivers a minimum CMRR of 80 dB from dc to 10 kHz.

The features of AD8208 can be summarized as (1)qualified for automotive applications; (2)eMI filters included; (3)high common-mode voltage range -2 V to +45 V operating/ -24 V to +80 V survival; (4)buffered output voltage; (5)gain = 20 V/V; (6)low-pass filter (1-pole or 2-pole); (7)wide operating temperature range 8-lead SOIC: -40°C to +125°C/ 8-lead MSOP: -40°C to +125°C; (8)excellent ac and dc performance ±1 mV voltage offset/ -5 ppm/°C typical gain drift/ 80 dB CMRR minimum dc to 10 kHz.

The absolute maximum ratings of AD8208 are (1)supply voltage: 12 V; (2)continuous input voltage (common mode): -24 V to +80 V; (3)differential input voltage: ±12 V; (4)reversed supply voltage protection: 0.3 V; (5)ESD Human Body Model: ±4000 V; (6)operating temperature range: -40°C to +125°C; (7)storage temperature range: -65°C to +150°C; (8)output short-circuit duration: indefinite; (9)lead temperature Range (Soldering, 10 sec): 300°C.