Journal of IKEEE (전기전자학회논문지)

Institute of Korean Electrical and Electronics Engineers (한국전기전자학회)
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Analysis of Quenching Resistor Effect to Improve Stability of TIA Circuit for APD

APD용 TIA 회로의 안정성 개선을 위한 Quenching 저항 영향 분석

  • Ki, Dong-Han (Dept. of Electronics Engineering, Jeonbuk National University) ;
  • Jin, Yu-Rin (Dept. of Electronics Engineering, Jeonbuk National University) ;
  • Kim, Sung-Mi (Dept. of Electronics Engineering, Jeonbuk National University) ;
  • Cho, Seong-Ik (Dept. of Electronics Engineering, Jeonbuk National University)
  • Received : 2022.08.09
  • Accepted : 2022.09.13
  • Published : 2022.09.30
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Abstract

In this paper, since the APD(Avalanche Photo Diode) for LTV(Light to Voltage) conversion uses a high voltage in the operating range unlike other PD(Photo Diode)s, the quenching resistor must be connected in series to prevent overcurrent when using the TIA(Transimpedance Amplifier). In such a case, quenching resistance may affect the transfer function of the TIA circuit, resulting in serious stability. Therefore, in this paper, by analyzing the effect of APD quenching resistance on the voltage and current loop transfer function of TIA, we propose a loop analysis and a method for determining the quenching resistance value to improve stability. TIA circuit with quenching resistance was designed by the proposed method and the stability of operation was verified through simulation and chip fabrication.

LTV(Light to Voltage) 변환을 위한 APD(Avalanche Photo Diode)는 다른 PD(Photo Diode)와 다르게 높은전압의 동작영역을 사용하므로 TIA(Transimpedance Amplifier) 사용시 과전류 방지를 위해 Quenching 저항을 직렬로 연결하여야 한다. 그러한 경우 Quenching 저항이 TIA 전달함수에 영향을 미쳐 안정도에 심각한 결과를 초래할 수 있다. 본 논문에서는 APD Quenching 저항이 TIA의 전압과 전류 루프 전달함수에 미치는 영향을 분석하여 안정도 개선을 위한 Quenching 저항 값 결정 방법을 제안하고자 한다. 제안된 방법에 의하여 Quenching 저항을 가지는 TIA 회로를 설계하여 시뮬레이션 및 칩 제작을 통하여 동작의 안정도를 검증하였다.

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