SAMPLE-HOLD CIRCUIT, INTEGRATED CIRCUIT DEVICE, ELECTRO-OPTIC DEVICE, AND ELECTRONIC EQUIPMENT

摘要

PROBLEM TO BE SOLVED: To provide a sample-hold circuit, an integrated circuit, an electro-optic device, and electronic equipment capable of achieving a proper sample hold operation while suppressing the circuit scale. SOLUTION: The sample-hold circuit includes: an operational amplifier; a sampling capacitor provided between an input node of the sample-hold circuit and a summing node that is a node of a first input terminal of the operational amplifier; and a feedback switch element provided between an output terminal and the summing node of the operation amplifier and constructed with a transfer gate. The feedback switch element includes a feedback P type transistor TFP and a feedback N type transistor TFN whose drain is connected to a summing node line LNEG. A shield pattern SLA1 is formed in a region between drain contacts CDP, CDN of a feedback P type transistor TFP and a feedback N type transistor TFN and source contacts CSP and CSN. COPYRIGHT: (C)2009,JPO&INPIT