Mismatch-Insensitive High Precision Switched-Capacitor Multiply-by-Four Amplifier

Seunghyun LIM  Gunhee HAN 

Publication
IEICE TRANSACTIONS on Electronics  Vol.E92-C  No.3  pp.377-379
Publication Date: 2009/03/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Electronic Circuits
Keyword: 
capacitor mismatch,  gain error inter-stage gain amplifier,  pipeline-ADC,  switched-capacitor amplifier, 

Full Text: PDF(316.7KB)

Summary: 
This letter proposes a mismatch insensitive switched-capacitor multiply-by-four (4X) amplifier using the voltage addition scheme. The proposed circuit provides 2-times faster speed and about half of silicon area when compared with the cascade of conventional 2X amplifiers. Monte-Carlo simulation results show about 15% gain accuracy improvement over the cascaded 2X- amplifiers.