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General Description

The MAX4208/MAX4209 ultra-low offset and drift instrumentation amplifiers feature exceptional precision specifications, low power consumption, rail-to-rail output, excellent gain-bandwidth product, and buffered REFIN/MODE input in a very small μMAX? package. These devices use a patented ? spread-spectrum, autozeroing technique that constantly measures and corrects the input offset, eliminating drift over time and temperature and the effect of 1/f noise. This technique achieves less than 20μV offset voltage, allows ground sensing capability, provides ultra-low CMOS input bias current and increased common-mode rejection performance.

Features

? Ultra-Low Input Offset Voltage ±20μV (max) at +25°C

? ±0.25 (max) Gain Error

? Low 0.2μV/°C Offset Voltage Drift

? 1pA CMOS Input Bias Current

? True Ground Sensing with Rail-to-Rail Output

? Buffered REF Input for High Accuracy and Bipolar Operation

? 2.85V to 5.5V Single-Supply Operation (or ±1.425V to ±2.75V Dual Supplies)

? 750μA Supply Current

? 1.4μA Shutdown Mode

? 750kHz Gain-Bandwidth Product

? Operate Over the -40°C to +125°C Automotive Temperature Range

? Tiny 8-Pin μMAX Package