Title:
DRIVE CIRCUIT AND SERIALIZER/DESERIALIZER
Document Type and Number:
WIPO Patent Application WO/2019/141141
Kind Code:
A1
Abstract:
Provided are a drive circuit and serializer/deserializer. The drive circuit comprises a first pre-drive circuit (11), a main drive circuit (20), and a selection circuit (30); a first output terminal (1103) of the first pre-drive circuit (11) is connected to a first input terminal (2001) of the main drive circuit (20) and a first output terminal (3001) of the selection circuit (30); a second output terminal (1104) of the first pre-drive circuit (11) is connected to a second input terminal (2002) of the main drive circuit (20) and a second output terminal (3002) of the selection circuit (30); if the first input terminal (1101) and second input terminal (1102) of the first pre-drive circuit (11) input a high-frequency differential signal, then the first output terminal (1103) and second output terminal (1104) of the first pre-drive circuit (11) output a high-frequency differential signal having a common-mode voltage of zero, and the first output terminal (3001) and second output terminal (3002) of the selection circuit (30) output a first common-mode voltage; the high-frequency differential signal having a common-mode voltage of zero and the first common-mode voltage are superimposed to form a high-frequency differential signal which has a common-mode voltage equal to the first common-mode voltage and which is used for driving the main drive circuit (20). The invention can increase the stability of the high-frequency differential signal being outputted to the main drive circuit (20).
Inventors:
CHEN YANQIN (CN)
WU CHUNBIAO (CN)
LIU PENGFEI (CN)
LIU YONGWANG (CN)
WU CHUNBIAO (CN)
LIU PENGFEI (CN)
LIU YONGWANG (CN)
Application Number:
PCT/CN2019/071539
Publication Date:
July 25, 2019
Filing Date:
January 14, 2019
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
G06F13/42
Foreign References:
| CN107066416A | 2017-08-18 | |||
| CN102769442A | 2012-11-07 | |||
| CN1661917A | 2005-08-31 | |||
| CN101471123A | 2009-07-01 | |||
| CN103347351A | 2013-10-09 | |||
| CN102142273A | 2011-08-03 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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