A Design for Low-Voltage Switched-Opamp with ON-Phase High Open-Loop Gain and OFF-Phase High-Output Impedance

Soichiro OHYAMA  Akira HYOGO  Keitaro SEKINE  

IEICE TRANSACTIONS on Electronics   Vol.E87-C   No.6   pp.1025-1028
Publication Date: 2004/06/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section LETTER (Special Section on Analog Circuit and Device Technologies)
switched-opamp,  SC circuits,  low voltage,  output impedance,  

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A Switched-Opamp is a device in SC circuits for replacing switches with Opamps which operate like a switch. This technique can be acheived in very low voltage operation. In this paper, we present a design for a Switched-Opamp that can operate at a low supply voltage during the ON-phase and can maintain a high output impedance during the OFF-phase.