Abstract
This paper presents a current-mode transimpedance amplifier (TIA) implemented in a 65nm CMOS technology, in which the mirrored current-conveyor (MCC) input configuration is proposed to lower the input impedance for wide bandwidth, thereby enabling narrow pulse recovery. Also, a feedforward control-voltage generator is suggested to realize automatic gain-control within a single pulse. Post-layout simulations of the proposed MCC-TIA demonstrate the variable transimpedance gain of 58~77 dBΩ, a wide dynamic-range of 41.9 dB that accommodates the input currents from 18 μApp to 2.24 mApp, the minimum noise current spectral density of 16.8 pA/sqrt(Hz), the power dissipation of 40 mW, and the core area of 1.0 mm2.
| Original language | English |
|---|---|
| Pages (from-to) | 526-532 |
| Number of pages | 7 |
| Journal | Journal of Semiconductor Technology and Science |
| Volume | 20 |
| Issue number | 6 |
| DOIs | |
| State | Published - Dec 2020 |
Bibliographical note
Funding Information:This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2020R1A2C1008879). The EDA tool was supported by the IC Design Education Center. The support of BrainKorea21-four is acknowledged.
Publisher Copyright:
© 2020, Institute of Electronics Engineers of Korea. All rights reserved.
Keywords
- CMOS
- Current-conveyor
- Feedforward control-voltage generator
- Mirrored cascode
- TIA