Invention Grant
- Patent Title: Charge-sharing and charge-redistribution DAC and method for successive approximation analog-to-digital converters
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Application No.: US15595045Application Date: 2017-05-15
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Publication No.: US09954549B2Publication Date: 2018-04-24
- Inventor: Alessandro Venca , Claudio Nani , Nicola Ghittori , Alessandro Bosi
- Applicant: Marvell World Trade Ltd.
- Applicant Address: BB St. Michael
- Assignee: MARVELL WORLD TRADE LTD.
- Current Assignee: MARVELL WORLD TRADE LTD.
- Current Assignee Address: BB St. Michael
- Main IPC: H03M1/66
- IPC: H03M1/66 ; H03M1/80 ; H03M1/68 ; H03M1/08 ; H03M1/10 ; H03M1/12 ; H03M1/38 ; H03M1/46 ; H03M3/00

Abstract:
A hybrid digital-to-analog converter including a charge-sharing digital-to-analog converter and a charge redistribution digital-to-analog converter is provided. The charge-sharing digital-to-analog converter is configured to receive a digital input signal having multiple bits. The bits include a most-significant-bit and a least-significant-bit. The charge-sharing digital-to-analog converter is configured to convert the most-significant-bit to provide a first portion of an analog signal and selectively share charges of first capacitors during a successive approximation of the most-significant-bit. The charge redistribution digital-to-analog converter is configured to convert the least-significant-bit to provide a second portion of the analog signal. The charge redistribution digital-to-analog converter performs charge redistribution by selectively connecting second capacitors to receive reference voltages during a successive approximation of the least-significant-bit.
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