Invention Grant
- Patent Title: Multi-level feed-back digital-to-analog converter using a chopper voltage reference for a switched capacitor sigma-delta analog-to-digital converter
- Patent Title (中): 用于开关电容Σ-Δ模数转换器的斩波电压基准的多电平反馈数模转换器
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Application No.: US12581982Application Date: 2009-10-20
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Publication No.: US07994958B2Publication Date: 2011-08-09
- Inventor: Vincent Quiquempoix , Philippe Deval
- Applicant: Vincent Quiquempoix , Philippe Deval
- Applicant Address: US AZ Chandler
- Assignee: Microchip Technology Incorporated
- Current Assignee: Microchip Technology Incorporated
- Current Assignee Address: US AZ Chandler
- Agency: King & Spalding L.L.P.
- Main IPC: H03M1/66
- IPC: H03M1/66 ; H03M3/00

Abstract:
A multi-bit digital-to-analog converter has a reference voltage generator generating a reference voltage with an offset voltage; a switched capacitor stage for generating a plurality of output voltages; and a switching sequencer controlling the switched capacitor stage operable to generate switching patterns for each output voltages, wherein each pattern has a charge phase and a transfer phase, and wherein for at least one output voltage the switching sequencer provides two switching patterns wherein each switching pattern contributes an offset of opposite polarity.
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