An Offset-Compensated CMOS Programmable Gain Amplifier

Takafumi YAMAJI  Tetsuro ITAKURA  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E80-A   No.2   pp.353-355
Publication Date: 1997/02/25
Online ISSN: 
Print ISSN: 0916-8508
Type of Manuscript: Special Section LETTER (Special Section on Analog Circuit Techniques for System-on-Chip Integration)
DC offset,  offset compensation,  TDMA,  analog CMOS circuit,  digital cellular,  

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A CMOS programmable gain amplifier (PGA) with a swiched capacitor offset compensation circuit is described. The mean compensation error is 130µV at the input, and the standard deviation of the compensation error is 50µV. This PGA is applicable to a baseband amplifier for digital radio communication terminals.