Mems microphone system, mems microphone test trimming circuit and method
By using a MEMS microphone test and tuning circuit to communicate via a data port, the circuit structure and protocol are simplified, solving the problems of circuit complexity and high power consumption in existing technologies, and realizing low-power test and tuning.
CN115412818BActive Publication Date: 2025-11-07ALKAIDSEMI (SHANGHAI) TECHNOLOGIES CORP
Patent Information
- Application Number
- CN202110587058.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2021-05-27
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2041-05-27
Smart Images
Figure CN115412818B_ABST
Abstract
The application provides a MEMS microphone system, a MEMS microphone test and trimming circuit and a method, the MEMS microphone system comprising a MEMS microphone test and trimming circuit and a MEMS microphone module, the MEMS microphone test and trimming circuit comprising a data output module, a detection module and an identification module; the MEMS microphone module is tested and trimmed without increasing additional ports by multiplexing data ports of the MEMS microphone module; the circuit structure of the MEMS microphone test and trimming circuit is simple, and the power consumption is low, so that the area and power consumption of the MEMS microphone system chip are not increased too much; the communication protocol between the MEMS microphone test and trimming circuit and a single-chip microcomputer is simple.
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Citation Information
Patent Citations
Sensitivity adjusting system and sensitivity adjusting method of silicon microphone
CN102611980A
MEMS microphone system and MEMS microphone test trimming circuit
CN215773559U