Title:
TYPE C INTERFACE SINGLE-POLE DOUBLE-THROW SWITCH CIRCUIT, ANALOG SWITCH CHIP AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/036772
Kind Code:
A1
Abstract:
Provided in the present invention are a Type C interface single-pole double-throw switch circuit, an analog switch chip and an electronic device, which may generate a reverse bias voltage at two ends of a first diode. After the reverse bias voltage is applied to a PN junction, the capacitance value of the PN junction may be significantly reduced. Furthermore, the capacitance to ground at a COM point when a first field effect transistor (FET), i.e. an audio channel, is turned off may be effectively reduced, thereby preventing the reduction of the bandwidth of a digital channel due to excessive capacitance. Hence, on the basis of the present invention, the large size of the first FET and the high bandwidth of the digital channel may easily be simultaneously achieved, so that the THD performance of the analog audio channel and the bandwidth of the digital channel may easily be simultaneously improved, thus preventing conflict between the two.
Inventors:
TAO HONGXIA (CN)
Application Number:
PCT/CN2020/108147
Publication Date:
March 04, 2021
Filing Date:
August 10, 2020
Export Citation:
Assignee:
SHANGHAI YAOHUO MICROELECTRONICS CO LTD (CN)
International Classes:
H03K17/51
Foreign References:
| CN110365323A | 2019-10-22 | |||
| CN206149480U | 2017-05-03 | |||
| CN110113038A | 2019-08-09 | |||
| CN106874233A | 2017-06-20 | |||
| JP2001326502A | 2001-11-22 | |||
| CN106294244A | 2017-01-04 |
Attorney, Agent or Firm:
SHANGHAI HUIHAN INTELLECTUAL PROPERTY LAW FIRM (CN)
Download PDF:
Previous Patent: ELECTRONIC DEVICE HAVING FOLDABLE SCREEN, AND DISPLAY METHOD
Next Patent: SIGNAL MEASUREMENT METHOD AND DEVICE
Next Patent: SIGNAL MEASUREMENT METHOD AND DEVICE