US Patent 11770125 Hybrid analog-to-digital converter with inverter-based residue amplifier
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US Patent 11770125 Hybrid analog-to-digital converter with inverter-based residue amplifier
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Patent abstract
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 Inventor Names
Eric Soenen
Martin Kinyua
Date of Patent
September 26, 2023
Patent Application Number
17718157
Date Filed
April 11, 2022
Patent Citations
Patent Primary Examiner
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