Invention Grant
- Patent Title: Digital filter for a delta-sigma analog-to-digital converter
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Application No.: US18152218Application Date: 2023-01-10
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Publication No.: US11870465B2Publication Date: 2024-01-09
- Inventor: Venkataratna Subrahmanya Bharathi Akondy Raja Raghupathi
- Applicant: TEXAS INSTRUMENTS INCORPORATED
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent Brian D. Graham; Frank D. Cimino
- Main IPC: H03M3/00
- IPC: H03M3/00

Abstract:
An analog-to-digital converter (ADC) includes a modulator, an integrator circuit, and first and second differentiator circuits. The modulator has a modulator input and a modulator output. The modulator input is configured to receive an analog signal, and the modulator is configured to generate digital data on the modulator output. The integrator circuit has an integrator circuit input and an integrator output. The integrator input is coupled to the modulator output. The first differentiator circuit is coupled to the integrator output, and the first differentiator circuit is configured to be clocked with a first clock. The second differentiator circuit is coupled to the integrator output, and the second differentiator circuit configured to be clocked with a second clock. The second clock is out of phase with respect to the first clock.
Public/Granted literature
- US20230163781A1 DIGITAL FILTER FOR A DELTA-SIGMA ANALOG-TO-DIGITAL CONVERTER Public/Granted day:2023-05-25
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