Hybrid analog-to-digital converter with inverter-based residue amplifier

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United States of America

PATENT NO 12231137
APP PUB NO 20230412179A1
SERIAL NO

18231745

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Abstract

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An apparatus and method for analog to digital conversion of analog input signals are disclosed herein. In some embodiments, an analog-to-digital (ADC) may comprise: a first successive approximation register (SAR) circuit comprising a fast SAR (FSAR) circuit and a residue digital-to-analog converter (RDAC) circuit and a residue amplifier circuit, coupled to the RDAC circuit, comprising an amplifier circuit that is configured to amplify a residual signal generated by the RDAC circuit, wherein the amplifier circuit comprises a deadzone control circuit and a first, second and third inverter stages, wherein the third stage is biased to operate in a sub-threshold region.

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Patent Owner(s)

  • TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kinyua, Martin Cedar Park, US 68 396
Soenen, Eric Austin, US 112 728

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