MULTIPLEXING CIRCUIT AND MOBILE TERMINAL

WIPO Patent Application WO/2020/063590

A1

Provided are a multiplexing circuit and a mobile terminal, wherein same relate to the technical field of electronics and communications and are used to solve the problem of a high product cost when an integrated switch is used in a mobile phone. In the multiplexing circuit, a first switch circuit transmits a right channel audio signal provided by a right channel transmission end to a first signal transmission end; a second switch circuit transmits a left channel audio signal provided by a left channel transmission end to a second signal transmission end; and the signal transmission between the first signal transmission end and a first output terminal and the signal transmission between the second signal transmission end and a second output end are realized by means of a third switch circuit. The first switch circuit comprises a first transistor and a first constant voltage control circuit, wherein the first constant voltage control circuit loads the right channel audio signal to a gate of the first transistor. The second switch circuit comprises a second transistor and a second constant voltage control circuit, wherein the second constant voltage control circuit loads the left channel audio signal to a gate of the second transistor.

WO/2019/190533	TECHNIQUES FOR SERIAL COMMUNICATION
WO/1996/033463	SOURCE AND SINK VOLTAGE REGULATOR FOR TERMINATORS
JP4430048	Data transceiver and bus interface with it

HUANG TING (CN)
CHANG ZHI (CN)
QIU YUPENG (CN)

PCT/CN2019/107543

April 02, 2020

September 24, 2019

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HUAWEI TECH CO LTD (CN)

G06F13/40

WO2009061559A1

2009-05-14

CN109491942A	2019-03-19
CN206226696U	2017-06-06
CN202111352U	2012-01-11

See also references of EP 3812910A4

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