Mirrored Current-Conveyor Transimpedance Amplifier for Home Monitoring LiDAR Sensors

Daseul Yoon, Ji Eun Joo, Sung Min Park

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


This article presents a current mode transimpedance amplifier (TIA) implemented in a standard 65-nm CMOS technology for the applications of elder-care home monitoring LiDAR sensors. Particularly, a novel mirrored current-conveyor (MCC) input configuration is proposed to lower the input impedance, thus achieving a wide bandwidth. This MCC-TIA can alleviate severe pulse spreading issue for near-range detection, enabling effective narrow-pulse recovery. Also, a feedforward control-voltage generator is newly suggested to realize an automatic gain-control within a single pulse-width duration. Measured results demonstrate the variable transimpedance gain of 5977 dB Ω to accommodate the incoming input currents of 18 μApp ∼ 2.24 mApp that corresponds to the feasible detection range of 0.55.3 meters in an elder's home. The bandwidth of 83 MHz2.6 GHz is measured with the minimum noise current spectral density of 16.8 pA/sqrt(Hz). The chip dissipates 40 mW in total, and occupies the area of 1.0 mm2, including I/O pads.

Original languageEnglish
Article number9290119
Pages (from-to)5589-5597
Number of pages9
JournalIEEE Sensors Journal
Issue number5
StatePublished - 1 Mar 2021

Bibliographical note

Funding Information:
The EDA tool was supported by the IC Design Education Center.

Funding Information:
Manuscript received October 27, 2020; revised November 27, 2020; accepted December 4, 2020. Date of publication December 10, 2020; date of current version February 5, 2021. This work was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korean Government (MSIT) under Grant 2020R1A2C1008879 and in part by the BrainKorea21-four. The associate editor coordinating the review of this article and approving it for publication was Prof. Yu-Te Liao. (Daseul Yoon and Ji-Eun Joo contributed equally to this work.) (Corresponding author: Sung Min Park.) Daseul Yoon is with the Department of Electronic and Electrical Engineering, Ewha Womans University, Seoul 03760, South Korea.

Publisher Copyright:
© 2001-2012 IEEE.


  • CMOS
  • LiDAR
  • TIA
  • current-conveyor
  • feedforward control-voltage generator
  • mirrored cascode


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