Micropower CMOS temperature sensor with digital output

A CMOS smart temperature sensor with a 3 sigm Inaccuracy of +-0.5 deg C from -50 deg C to 120 deg C

Chopper amplifier circuit with CMOS switches and amplifier FETs

Abstract of NL 1001231 (C2) The input voltage is fed to the inputs of an operational amplifier via a chopping reversal switchThe CMOS operational amplifier has a current source and a current mirror. The operational amplifier output is fed to an output circuit. The possible offset voltage is suppressed by the operation of a synchronised chopper...