Patent ID: 8698882
Filing Date: 2014-04-15
Classification: G11C,H04N

Abstract:
1. Apparatus, comprising a sample and hold circuit comprising: a plurality of sampling capacitors coupled at first plates to a reference supply node; a network of switches including a first plurality of switches each coupled between an input node and a respective sampling node and a second plurality of switches each coupled between one of the sampling nodes and a second plate of a respective one of the sampling capacitors; and a control circuit for said network of switches, said control circuit operable to control said network of switches so as to sample an incoming signal at the input node onto said plurality of capacitors by sequentially activating the second plurality of switches while the first plurality of switches are simultaneously activated such that each sampling capacitor takes a sample of the incoming signal at a different time, and then simultaneously activating the second plurality of switches while the first plurality of switches are simultaneously deactivated to output a signal corresponding to an average of said samples.