Title:
OPERATIONAL AMPLIFIER AND CHIP
Document Type and Number:
WIPO Patent Application WO/2019/144790
Kind Code:
A1
Abstract:
An operational amplifier and a chip, being used to improve the operational performance of the operational amplifier. The operational amplifier (100) comprises: a differential amplification circuit (110), configured to receive and amplify an input voltage, to generate an output voltage, the differential amplification circuit (110) being further configured to receive a feedback signal, the feedback signal being used to adjust a common mode voltage of the output voltage; a reference voltage generation circuit (120), configured to detect state information of the operational amplifier (100), and generate a reference voltage according to the state information, the state information comprising the temperature and/or the working voltage of the operational amplifier (100); and a common mode feedback circuit (130), configured to receive the output voltage and the reference voltage, and provide a feedback signal to the differential amplification circuit (110) according to the output voltage and the reference voltage.
More Like This:
Inventors:
LI HAIXI (CN)
Application Number:
PCT/CN2019/070343
Publication Date:
August 01, 2019
Filing Date:
January 04, 2019
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H03F1/42
Foreign References:
| CN101847973A | 2010-09-29 | |||
| CN101592967A | 2009-12-02 | |||
| CN101262206A | 2008-09-10 |
Other References:
See also references of EP 3736978A4
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
Download PDF:
Previous Patent: HANDLE STEM AUTOMATIC LIFTING METHOD USING POSITION MEMORY
Next Patent: PISTON BOTTLE
Next Patent: PISTON BOTTLE