The AD8638 is a wide bandwidth auto-zero amplifiers featuring rail-to-rail output swing while operating from 5 V to 16 V single supply or +/-2.5 V to 8V dual supplies. Using Analog Devices' new topology these zero-drift amplifiers combine low cost, with high accuracy and low noise. No external capacitors are required. In addition, the AD8638 family greatly reduces the digital switching noise often found in chopper-stabilized amplifiers. With an offset voltage of 10 V, offset drift less than 0.08 V/C and noise of only 1.5 Vp-p (0 Hz to 10 Hz), the AD8638 family is perfectly suited for applications where error sources must be minimized. Position and pressure sensors, thermocouple and thermopile detectors, and strain gage amplifiers benefit greatly from nearly zero drift over their operating temperature range.