The AD8221ARZ is an integrated circuit from Analog Devices that is used as an instrumentation amplifier with a fixed gain of 5. It is a low cost, low noise, rail-to-rail input/output amplifier designed for applications requiring a very low noise, low distortion and wide bandwidth. This IC features a wideband, low distortion, low quiescent current, low input voltage noise, high rejection ratio, low temperature drift and high current output. The operating temperature range of this device is from -40°C to +85°C and the supply voltage range is from 2.7V to 11.4V. It can also be fully compensated to achieve a wide gain range of 0.2V/V to a maximum of 1000V/V. The device can be configured for single-ended, differential, or bridge connections.