Title:
SENSOR DETECTION CIRCUIT AND ELECTRONIC APPARATUS
Document Type and Number:
WIPO Patent Application WO/2021/135296
Kind Code:
A1
Abstract:
A sensor detection circuit. The sensor detection circuit comprises an analog-to-digital converter and a digital signal processor which are located between an input end and output end of the sensor detection circuit, wherein the sensor detection circuit receives a sensor signal at the input end, and the sensor signal successively passes the analog-to-digital converter and the digital signal processor, and is then outputted from the output end of the sensor detection circuit; and the analog-to-digital converter comprises a Δ-Σ modulator, the Δ-Σ modulator comprises an input level and a feedback level, and a dynamic input range of the Δ-Σ modulator is determined by means of the ratio of the input level to the feedback level.
Inventors:
LI CHEN (CN)
WANG HAO (CN)
WANG HAO (CN)
Application Number:
PCT/CN2020/111275
Publication Date:
July 08, 2021
Filing Date:
August 26, 2020
Export Citation:
Assignee:
CSMC TECHNOLOGIES FAB2 CO LTD (CN)
International Classes:
H03M3/00
Foreign References:
| CN108199718A | 2018-06-22 | |||
| CN108199718A | 2018-06-22 | |||
| CN106374930A | 2017-02-01 | |||
| CN109238516A | 2019-01-18 | |||
| CN109086641A | 2018-12-25 | |||
| US20190305794A1 | 2019-10-03 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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