AD8220

The AD8220 is a gain programmable, high performance instru-mentation amplifier that draws a typical input bias current of 4pA and rejects high frequency common mode signals. The CMRR of instrumentation amplifiers on the market today falls off at 200 Hz. In contrast, the AD8220 maintains a CMRR of 80 dB over an extended frequency at G = 1. The combination of extremely high input impedance and high CMRR over frequency makes the AD8220 useful in applications such as patient monitoring where input impedance is high and high frequency disturbances must be rejected.

The rail to rail output, low power consumption and small MSOP package make this precision instrumentation amplifier AD8220 attractive for use in multi-channel applications.

Programmable gain affords the user design flexibility. A single resistor sets the gain from 1 to 1000. The AD8220 operates on both single and dual supplies and is well suited for situations where ±10 V input voltages are encountered. In addition its rail to rail output stage allows for maximum dynamic range when constrained by low single supply voltages.

Performance is specified over the entire industrial temperature range of 40°C to +85°C.