Zero-Drift, Single-Supply, Rail-to-Rail Input/Output Low Noise Operational Amplifier
This new family of Amplifiers has ultra-low offset, drift and bias current. The AD8628 is a wide bandwidth auto-zero Amplifier featuring Rail-to-Rail input and output swings and low noise. Operation is fully specified from 2.7 to 5 volts single supply (1.35V to 2.5V dual supply).
The AD8628 family provides the benefits previously found only in expensive auto-zeroing or chopper-stabilized Amplifiers 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 AD8628 greatly reduces the digital switching noise found in most chopper stabilized Amplifiers
With an offset voltage of only 1V, drift less than 0.005 V/C and noise of only 0.5uV P-P (0Hz to 10 Hz) the AD8628 is perfectly suited for applications where error sources cannot be tolerated. Position and Pressure Sensors medical equipment, and strain gage Amplifiers benefit greatly from nearly zero drift over their operating temperature range. Many systems may take advantage of the Rail-to-Rail input and output swings provided by the AD8628 family to reduce input biasing complexity and maximize SNR.
The AD8628 family is specified for the extended industrial (-40 to +125C) temperature range. The AD8628 Amplifier is available in the tiny SOT23 and the popular 8-pin narrow SOIC plastic packages.
By Analog Devices, Inc.
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