- Patent Title: Time-domain incremental two-step capacitance-to-digital converter
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Application No.: US17176341Application Date: 2021-02-16
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Publication No.: US11569826B2Publication Date: 2023-01-31
- Inventor: Xiyuan Tang , Nan Sun
- Applicant: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
- Applicant Address: US TX Austin
- Assignee: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
- Current Assignee: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM
- Current Assignee Address: US TX Austin
- Agency: Meunier Carlin & Curfman LLC
- Main IPC: H03M3/00
- IPC: H03M3/00 ; H03M1/00
Abstract:
An exemplary incremental two-step capacitance-to-digital converter (CDC) with a time-domain sigma-delta modulator (TDΔΣM) includes a voltage-controlled oscillator (VCO)-based integrator that can be used in a low-order loop configuration. Example prototypes are disclosed, which when fabricated in 40-nm CMOS technology, provides CDC resolution of 0.29 fF while dissipating only 0.083 nJ per conversion.
Public/Granted literature
- US20210258014A1 TIME-DOMAIN INCREMENTAL TWO-STEP CAPACITANCE-TO-DIGITAL CONVERTER Public/Granted day:2021-08-19
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