Title:
SIGNAL PROCESSING CIRCUIT AND AUDIO POWER AMPLIFYING CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2020/168993
Kind Code:
A1
Abstract:
The present application provides a signal processing circuit and an audio power amplifying circuit. The signal processing circuit comprises: a first amplifying unit used for receiving a first input signal and a second input signal, wherein the first amplifying unit amplifies the first input signal and the second input signal, and outputs a first output signal and a second output signal; and an adjusting unit connected to the first amplifying unit and used for receiving the first output signal and the second output signal. When the first output signal is greater than or equal to a common-mode level signal, the adjusting unit outputs the first output signal and a second adjusting signal according to the first output signal and the second output signal, and when the first output signal is smaller than the common-mode level signal, the adjusting unit outputs a first adjusting signal and the second adjusting signal according to the first output signal and the second output signal, wherein the first adjusting signal is smaller than the first output signal, the second adjusting signal is smaller than the second output signal, and conduction loss of the audio power amplifying circuit can be reduced by outputting different adjusting signals.
Inventors:
ZHANG HAIJUN (CN)
ZHANG QIFAN (CN)
DU LIMING (CN)
SUN HONGJUN (CN)
ZHANG QIFAN (CN)
DU LIMING (CN)
SUN HONGJUN (CN)
Application Number:
PCT/CN2020/075479
Publication Date:
August 27, 2020
Filing Date:
February 17, 2020
Export Citation:
Assignee:
SHANGHAI AWINIC TECHNOLOGY CO LTD (CN)
International Classes:
H03F1/30; H03F3/20; H03F3/68
Foreign References:
| CN109861649A | 2019-06-07 | |||
| CN101931369A | 2010-12-29 | |||
| US20080063219A1 | 2008-03-13 | |||
| CN101150297A | 2008-03-26 | |||
| CN101465622A | 2009-06-24 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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