A high-gain current mirror operational amplifier utilizing gain-boosting technology
A novel high-gain current mirror (CM) operational transconductance amplifier (OTA) has been designed to address the low-gain issues inherent in traditional current mirror OTA (CM OTA). The proposed operational amplifier employs a current-reuse (CR) architecture combined with a Gain-boosting (GB) technique, effectively improving both transconductance (G<sub>m</sub>) and output resistor (R<sub>out</sub>) without increasing the static power consumption or compromising stability. Circuit modeling and simulation have been conducted using the Cadence software based on a 0.18 μm CMOS process. Simulation results demonstrate that, under a supply voltage of 1.2 V and a load capacitance of 10 pF, the proposed OTA exhibits a direct current gain enhancement of 93 dB and 57 dB when compared to CM OTA and CR current mirror OTA (CR-CM OTA), respectively
Authors
- Hailong Yu (ORCID: https://orcid.org/0000-0001-8408-1909)
- Jiangping He (ORCID: https://orcid.org/0000-0002-1425-3530)
- Hui Zhi (ORCID: https://orcid.org/0000-0002-8975-054X)
- D.S. Dong
Institutions
- Xihua University (CN)
Publication Details
- Published
- 2025-04-18
- DOI
- https://doi.org/10.1117/12.3064238
- Primary Topic
- Semiconductor Quantum Structures and Devices
- Type
- article
- Field-Weighted Citation Impact
- 0.00