Low power switching techniques for digital-to-analog converters

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United States of America Patent

PATENT NO 9397676
SERIAL NO

14868616

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Abstract

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Embodiments of the present disclosure provide improved switching techniques for controlling three-level DAC cells employing a return-to-hold scheme. Disclosed techniques include switching a DAC cell off for at least the duration of a time period between two hold periods while a digital value of zero is being converted. Because the DAC cell is switched off between two hold periods, the current source drain voltage is not disturbed during the critical transient times when D flip-flop outputs change, which happens during the hold periods, in response to change of digital values to be converted. In this manner, power consumption may be reduced while preserving the high performance properties of a three-level return-to-hold DAC.

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Patent Owner(s)

Patent OwnerAddress
ANALOG DEVICES INCONE ANALOG WAY WILMINGTON MA 01887

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nguyen, Khiem Quang Tewksbury, US 26 251

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