4.6 Charge Pump

The CPON bit of the OPAxCON0 register can be used to control the OPA module’s internal charge pump. When the charge pump is enabled, the OPA module functions as a rail-to-rail(1) operational amplifier. The main tradeoff of the OPA charge pump is a significant increase in the quiescent current of the module.

Important:
  1. Rail-to-rail operation refers to the output range approaching the power rail limits.