A broadband fully differential amplifier in InP DHBT using global shunt-shunt feedback
This paper presents a broadband fully differential amplifier using a 0.8-μm InP DHBT process, exhibiting a bandwidth exceeding 8GHz from DC and achieves a differential gain of 14.56dB, occupying 0.78mm × 0.7mm with all pads involved and consuming only 375mW with a -5V power supply. The core of the design leverages an operational amplifier with Cherry-Hooper architecture, incorporating global shunt-shunt feedback to ensure high gain linearity across the bandwidth. Notably, the -1dB bandwidth of this circuit extends up to 5GHz. Additionally, the design is entirely devoid of inductors, resulting in a consistent gain profile without any significant gain peaking.
Authors
- Zhi Jin (ORCID: https://orcid.org/0000-0001-9670-7366)
- Yifei Xu (ORCID: https://orcid.org/0009-0006-5057-7352)
- Zhicheng Liu (ORCID: https://orcid.org/0000-0001-7721-8938)
- Yaohua Li (ORCID: https://orcid.org/0000-0002-5766-9755)
- Bowen Hu (ORCID: https://orcid.org/0000-0002-8985-9254)
- K.S. Chai
- Yufan Su
- Jiaxin Lou
- Yunfei Wang (ORCID: https://orcid.org/0009-0006-6530-3119)
Institutions
- Chinese Academy of Sciences (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- IEICE Electronics Express
- Published
- 2024-10-02
- DOI
- https://doi.org/10.1587/elex.21.20240531
- Primary Topic
- Optical Network Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00