A Design of Bipolar Transresistance Amplifiers

바이폴라 트랜스레지스턴스 증폭기 설계

  • 차형우 (청주대학교 전자·정보통신·반도체공학부) ;
  • 임동빈 (청주대학교 전자공학과) ;
  • 송창훈 (청주대학교 전자공학과)
  • Published : 2001.11.01

Abstract

Novel bipolar transresistance amplifier(TRA) and its offset-compensated TRA for high-performance current-mode signal processing are described. The TRA consist of two current follower for a current inputs, a current summer for the current-difference, a resistor for the current to voltage converter, and a voltage follower for the voltage output. The offset-compensated TRA adopts diode-connected npn and pnp transistor to reduce offset voltage in the TRA. The simulation results show that the TRA has impedance of 0.5 Ω at the input and the output terminal. The offset voltages at these terminals is 40 mV The offset-compensated TRA has the offset voltage of 1.1 mV and the impedance of 0.25 Ω. The 3-dB cutoff frequency is 40 MHz for the two TRA's when used as a current to voltage converter with unit-gain transresistance. The power dissipation is 11.25 mW.

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References

  1. A. B. Grebene, Bipolar and MOS analog integrated circuit design ; John Wiley & Sons, chap.7.9, 1984
  2. A. S. Sedra and K. C. Smith, Microelectronic Circuits : Oxford Univ. Press, chap.1, 1998
  3. National Operation Amplifier Databook, pp. 283, 1995
  4. 차 형우, 김 동용, 김 종필, 정 원섭, '고정도 바이폴라 트랜스레지스턴스 증폭기', 대한전자 공학회 1998년도 추계종합학술대회 논문집, 제21권, 제2호, pp. 668-671, 1998
  5. H.-W. Cha and K. Watanabe, 'Wideband CMOS current conveyor', Electron. Lett., vol. 32, no. 14, pp. 1245-1246, July 1996
  6. 차 형우, 임 동빈, 손 창훈, 정 원섭, '오프셋 보상된 바이폴라 트랜스레지스턴스 증폭기의 설계', 대한전자공학회 2000년도 추계종합학술대회 논문집, 제23권, 제2호, pp. 63-66, 2000