Highly-Linear Cmos Ota With Compensation Of Mobility Reduction

Koichi Tanno, Daisuke Ide, Kazumasa Nishimura,Hisashi Tanaka,Hiroki Tamura

2008 IEEE ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS (APCCAS 2008), VOLS 1-4（2008）

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摘要

This paper describes highly linear CMOS OTA with compensation of mobility reduction. The proposed OTA is circuitry of the adaptive bias based OTA with a tail current source, and can reduce the influence of the mobility reduction. Through Star-HSPICE simulations, we could confirm that the third-order harmonic (HD3) can be reduced by 26.6dB by using the proposed technique. Lastly, as an application of the proposed OTA, we design the 6th-order 0.05 degrees equiripple continuous-time filter.

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关键词

simulation,cmos integrated circuits,harmonic analysis,operational amplifiers,linearity

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