Micro-power Op-Amps Work Down to 1.8V Total Supply, Guaranteed over Temperature

High Accuracy Oxygen Sensor.LT6001 Op-Amp A1 Provides a Buffered Reference Voltage so the Circuit is accurate all the Way Down to a Zero-Oxygen Environment Without Clipping at ground. LT6001 Op-Amp A2 Provides the Current-to-Voltage function through feedback resistor RF