35.3.2.5 Input Voltage Range

In applications where a rail-to-rail input voltage range is not needed, the OPAMP peripheral may be configured to save power. Writing ‘1’ to the Input Range Select (IRSEL) bit in the Power Control (PWRCTRL) register reduces the voltage range of the op amp inputs, which also reduces power consumption. See the Electrical Characteristics section for more information about the expected voltage range and power consumption.