A Novel High CMRR, Low Power and Low Voltage COS with QFG - Circuits and Systems

CS > Vol.3 No.3, July 2012

Circuits and Systems

Volume 3, Issue 3 (July 2012)

ISSN Print: 2153-1285 ISSN Online: 2153-1293

Google-based Impact Factor: 0.48 Citations

A Novel High CMRR, Low Power and Low Voltage COS with QFG ()

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Download as PDF (Size: 730KB) PP. 263-268

DOI: 10.4236/cs.2012.33036 4,448 Downloads 7,371 Views Citations

Author(s)

Alireza Ghorbani, Ahmad Ghanaatian

Affiliation(s)

Electronics Research Iran University of Science and Technology, Tehran, Iran.

ABSTRACT

A novel high CMRR current output stage (COS) with QFG is presented in this paper. A novel common mode feedback (CMFB) is used to reject the common mode signal in order to achieve high CMRR. The common mode signal is omitted by the technique of adding the main signal and its opposite polarity one. 112 dB of CMRR is obtained in 0.35 μm CMOS technology with ±0.75 v supply voltage and only 182μw power dissipation which shows good improvement compared to the other work in the literature.

KEYWORDS

CMRR QFG; Current Mode; Current Oprational Amplifier COA; COS

Share and Cite:

A. Ghorbani and A. Ghanaatian, "A Novel High CMRR, Low Power and Low Voltage COS with QFG," Circuits and Systems, Vol. 3 No. 3, 2012, pp. 263-268. doi: 10.4236/cs.2012.33036.

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