Title:
CIRCUIT FOR INCREASING OUTPUT DIRECT-CURRENT LEVEL OF TRANSIMPEDANCE AMPLIFICATION STAGE IN TIA
Document Type and Number:
WIPO Patent Application WO/2019/173985
Kind Code:
A1
Abstract:
The present invention relates to a circuit for increasing the output direct-current level of a transimpedance amplification stage in a TIA. The circuit comprises a transimpedance amplification stage, a differential amplification stage, a level boosting unit and a direct-current restoration loop, wherein an input end of the transimpedance amplification stage is used for inputting a photocurrent signal, and an output end thereof is directly connected to an input end of the differential amplification stage. According to the present invention, by means of introducing a level boosting unit and a direct-current restoration loop, the output direct-current level of a transimpedance amplification stage is boosted, thus achieving the purpose of matching the input direct-current level of a differential amplification stage, and improving the stability of the overall circuit.
Inventors:
PENG HUIYAO (CN)
CHEN WEI (CN)
HONG JIACHENG (CN)
PAN JIANHUA (CN)
CHEN WEI (CN)
HONG JIACHENG (CN)
PAN JIANHUA (CN)
Application Number:
PCT/CN2018/078974
Publication Date:
September 19, 2019
Filing Date:
March 14, 2018
Export Citation:
Assignee:
XIAMEN UX HIGH SPEED IC CO LTD (CN)
International Classes:
G05F1/56; H03F3/45
Foreign References:
| CN104993876A | 2015-10-21 | |||
| CN107147448A | 2017-09-08 | |||
| US20170288618A1 | 2017-10-05 | |||
| CN108508950A | 2018-09-07 | |||
| CN208013817U | 2018-10-26 |
Attorney, Agent or Firm:
XIAMEN SHINHWA PATENT & TRADEMARK AGENCY CO., LTD. (CN)
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