| Title |
CMOS Symmetric Current-Conveyor Transimpedance Amplifier |
| Authors |
윤다슬(Daseul Yoon) ; 박성민(Sung Min Park) |
| DOI |
https://doi.org/10.5573/ieie.2019.56.6.26 |
| Keywords |
current-conveyor ; CMOS ; mirrored-cascode ; symmetric ; TIA |
| Abstract |
This paper presents a symmetric current-conveyor transimpedance amplifier(SCC-TIA) realized in a 0.13-μm CMOS technology for the applications of autonomous unmanned vehicle LiDARs. The current-conveyor input buffer consists of a 1:1 symmetric current-mirror to deliver the input photo-currents to the following voltage-mode INV-TIA with no loss. Also, it provides a positive transimpedance gain unlike a traditional voltage-mode TIA. In addition, bootstrap circuit technique is exploited to reduce further the effect of the parasitic photodiode capacitance upon the bandwidth and noise performance. The proposed SCC-TIA occupies the core area of 0.28 × 0.28 mm2. Chip measurements demonstrate that the SCC-TIA achieves 69-dBΩ transimpedance gain, 410-MHz bandwidth, 12.5- pA/sqrt(Hz) average noise current spectral density, and 20-mW power consumption from a 1.2-V supply. |