The OPA347NA/250 is a single MicroPower Operational Amplifier for use with smoke detectors. The small size and low power consumption (34μA per channel maximum) of the OPA347 make it ideal for battery-powered applications. The input range of the OPA347 extends 200mV beyond the rails and the output range is within 5mV of the rails. The OPA347 also features an excellent speed/power ratio with a bandwidth of 350kHz.