AD8556ARZ

AD8556ARZ is a zero-drift, 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, it accurately amplifies many other differential or single-ended sensor outputs. The AD8556 uses the Analog Devices, Inc. patented low noise, auto-zero and DigiTrim® technologies to create an incredibly accurate and flexible signal processing solution in a compact footprint. Gain is digitally programmable in a wide range from 70 to 1280 through a serial data interface. Gain adjustment can be fully simulated in-circuit and then permanently programmed with reliable polyfuse technology. Output offset voltage is also digitally programmable and is ratiometric to the supply voltage. It features internal EMI filters on the VNEG, VPOS, FILT and VCLAMP pins. Typical applications include pressure and position sensors, precision current sensing and strain gages.

• EMI filters at input pins
• Low offset voltage: 10µV maximum
• Low input offset voltage drift: 65nV/°C maximum
• High CMRR: 94dB minimum
• Digitally programmable gain and output offset voltage
• Programmable output clamp voltage
• Open and short wire fault detection
• Low-pass filtering
• Available in 8 lead NSOIC package
• Operating temperature range from -40°C to 140°C

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party