The AD8639ARMZ is a precision instrumentation amplifier from Analog Devices. It offers low offset voltage performance of 3uV, rail-to-rail output, and a high voltage gain of 136 dB. The GBP Gain Bandwidth Product of the device is 1.5 MHz, and the PSRR Power Supply Rejection Ratio is 143 dB. The device operates with a supply current of 1.25 mA and an input bias current of 250 pA. The device is offered in an SMD/SMT VSSOP-8 package with a maximum temperature rating of +125 C.