A dual mode, single ended to fully differential converter structure is incorporated into a fully differential sample and hold structure which can be coupled with an ADC as a front end for mixed mode applications. Simultaneously, ignition timing is retarded and a fuel-cut operation to stop fuel supply to an internal combustion engine is performed. Outputs of the first and second transfer circuits are sequentially output from a multiplex circuit. The electro-static discharge detector is configured to control the NMOS stack, and may include three switches.