Digitally Programmable Sensor Signal Zero-Drift Amplifier

AD8555 is a zero-drift bridge Sensor signal Amplifier with digitally programmable gain and output offset. Designed to easily and accurately convert variable Pressure Sensor and strain bridge outputs to a well-defined output voltage range, AD8555 will also accurately amplify many other differential or single ended Sensor outputs. AD8555 utilizes ADIs patented low noise auto-zero and DigiTrim technologies to create an incredibly accurate and flexible signal processing solution in a very compact footprint. In addition to extremely low input offset voltage and input offset voltage drift and very high DC and AC CMRR, the AD8555 also includes a pull-up current source at each Analog input to allow open wire and shorted wire fault detection, and a low-pass Filter function implemented via a single low-cost external capacitor. Output clamping set via an external reference voltage allows the AD8555 to drive lower voltage ADCs safely and accurately.
By Analog Devices, Inc.