AD8556 is a digitally programmable sensor signal amplifier produced by Analog Devices. It has EMI filters and can work in the range of -40℃ to +140℃. It has low input offset voltage, low input offset voltage drift, high CMRR, digitally programmable gain and output offset voltage, programmable output clamp voltage, open and short wire fault detection, low-pass filtering, single-wire serial interface and other features. It is suitable for automotive sensors, pressure and position sensors, precision current sensing, strain gauges and other applications
The AD8556 is a zero-drift, sensor signal amplifier designed to convert variable pressure sensor and strain bridge outputs to a well-defined output voltage range. It utilizes Analog Devices' patented low noise, auto-zero, and DigiTrim technologies to provide an accurate and flexible signal processing solution in a compact footprint.
Key features include digitally programmable gain ranging from 70 to 1280 via a single-wire serial interface, programmable output offset voltage, and internal EMI filters. The device also supports open and short wire fault detection through internal pull-up and pull-down current sources, and includes a low-pass filtering function implemented with a single external capacitor.
| Input Offset Voltage | 10 pV maximum |
|---|---|
| Common-Mode Rejection Ratio | 94 dB minimum |
| Gain Range | 70 to 1280 |
| Operating Temperature Range | -40°C to +140°C |
| Supply Voltage | 4.5 V to 5.5 V |
| Packages | SOIC_N and LFCSP_VQ |
The maximum input offset voltage is 10 pV.
The minimum common-mode rejection ratio is 94 dB.
The device is specified for operation from -40°C to +140°C.