The ISL28433SOICEVAL1Z evaluation board is designed to evaluate the performance of the ISL28433 chopper stabilized op amp. The ISL28433 chopper stabilized rail-to-rail quad op amp features a low 8μV maximum VOS over-temperature and a 0.1Hz 1/f noise corner frequency, enabling very high gain single-stage DC amplifiers that can operate from single cell batteries while consuming only 20μA of current. Each evaluation board can be configured as a precision high-gain (G = 10,000V/V) differential amplifier and demonstrates the level of performance possible with this type of amplifier while operating from battery voltages as low as 1.65V.