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Patent Searching and Data


Title:
NEGATIVE FEEDBACK AMPLIFICATION CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2019/113931
Kind Code:
A1
Abstract:
Provided in the present application is a negative feedback amplification circuit, relating to the technical field of circuits. The negative feedback amplification circuit comprises an operational amplifier, comprising a reverse input end and an output end; a sampling branch, one end of the sampling branch being used for receiving an input voltage, and a second end of the sampling branch being connected to the reverse input end of the operational amplifier; a feedback branch, one end of the feedback branch being connected to the output end of the operational amplifier, and a second end of the feedback branch being connected to the reverse input end of the operational amplifier; a voltage amplifier, an input end thereof being connected to the reverse input end of the operational amplifier; and a regulating branch, the output end of the voltage amplifier being connected to a second end of a sampling circuit by means of the regulating branch. The embodiments of the present application can achieve higher gain and larger bandwidth whilst consuming less power.

Inventors:
FAN SHUO (CN)
Application Number:
PCT/CN2017/116434
Publication Date:
June 20, 2019
Filing Date:
December 15, 2017
Export Citation:
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Assignee:
SHENZHEN GOODIX TECH CO LTD (CN)
International Classes:
H03M1/12
Foreign References:
CN107251436A2017-10-13
US7167119B12007-01-23
CN1409511A2003-04-09
CN102869959A2013-01-09
CN106534729A2017-03-22
Attorney, Agent or Firm:
SHANGHAI CHENHAO INTELLECTUAL PROPERTY LAW FIRM GENERAL PARTNERSHIP (CN)
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