Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A 1.5V CMOS High Frequency Operational Amplifier for High Frequency Signal Processing Systems.

고주파 신호처리 시스템을 위한 1.5V CMOS 고주파 연산증폭기

  • 박광민 (순천향대학교 공과대학 정보기술공학부) ;
  • 김은성 (순천향대학교 공과대학 정보기술공학부) ;
  • 김두용 (순천향대학교 공과대학 정보기술공학부)
  • Published : 2003.07.01
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Abstract

In this paper, a 1.5V CMOS high frequency operational amplifier for high frequency signal processing systems is presented. For obtaining the high gain and the high unity gain frequency with the 1.5V supply voltage, the op-amp is designed with simple two stages which are consisting of the rail-to-rail differential input stage and the class-AB output stage. The designed op-amp operates with the 1.5V supply voltage, and shows well the push-pull class-AB operation. The simulation results show the DC open loop gain of 77dB and the unity gain frequency of 100MHz for the 1㏁ ┃ 10pF load. When the resistive load R$_1$. is varied from 1㏁ to 1 ㏀, the DC open loop gain decreases by only 4dB.

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