Invention Grant
- Patent Title: Digital sensor assembly with selective dynamic element matching
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Application No.: US17197026Application Date: 2021-03-10
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Publication No.: US11381911B1Publication Date: 2022-07-05
- Inventor: Mohammad Sadegh Mohammadi , Mohammad Shajaan , Claus Erdmann Furst
- Applicant: Knowles Electronics, LLC
- Applicant Address: US IL Itasca
- Assignee: Knowles Electronics, LLC
- Current Assignee: Knowles Electronics, LLC
- Current Assignee Address: US IL Itasca
- Agency: Loppnow & Chapa
- Agent Matthew C. Loppnow; Roland K. Bowler, II
- Main IPC: H04R3/02
- IPC: H04R3/02 ; H03M3/00 ; H04R19/04 ; H04R3/04

Abstract:
The present disclosure relates generally to digital microphone and other sensor assemblies including a transducer, a delta-sigma analog-to-digital converter (ADC), a dynamic element matching (DELM) entity configured to compensate for nonlinearity resulting from variation among digital-to-analog conversion (DAC) elements of the ADC, and a control circuit configured to enable and disable the DELM based on a magnitude of a digital signal generated by the ADC.
Information query