Methods and apparatus to reduce inter-stage gain errors in analog-to-digital converters

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United States of America Patent

PATENT NO 12206424
APP PUB NO 20240072817A1
SERIAL NO

17899149

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Abstract

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An example analog-to-digital converter (ADC) comprising: sample and hold circuitry coupled to an analog input; a first sub-ADC coupled to the sample and hold circuitry; a multiplying digital-to-analog converter (M-DAC) coupled to the first sub-ADC; summation circuitry coupled to the sample and hold circuitry and the M-DAC; an amplifier coupled to the summation circuitry; a second sub-ADC coupled to the amplifier; and reference generation circuitry coupled to the first sub-ADC, the M-DAC, and the second sub-ADC, the reference generation circuitry including: reference voltage circuitry coupled to the M-DAC; a first resistor coupled to the reference voltage circuitry; a second resistor coupled to the first resistor; and a capacitor coupled in parallel to the second resistor by a switch.

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Patent Owner(s)

Patent OwnerAddress
TEXAS INSTRUMENTS INCORPORATEDDALLAS TX

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
K, Prasanth Bangalore, IN 12 24
Sharma, Rahul Bangalore, IN 153 2799

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