METHODS AND APPARATUS TO CALIBRATE ANALOG-TO-DIGITAL CONVERTERS

Abstract: an example apparatus includes: first voltage-to-delay circuitry having an output; second voltage-to-delay circuitry having an output; time domain converter circuitry having a first input, a trim input, and an output, the first input of the time domain converter circuitry coupled to the first voltage-to-delay circuitry; comparator circuitry having a first input, a second input, and an output, the first input of the comparator circuitry coupled to the output of the first voltage-to-delay circuitry and the first input of the time domain converter circuitry, the second input of the comparator circuitry coupled to the output of the second voltage-to-delay circuitry; and trim circuitry having a first input, a second input, and an output, the first input of the trim circuitry coupled to the output of the time domain converter circuitry, the second input of the trim circuitry coupled to the output of the comparator circuitry.

Inventor(s): Arun Mohan, Chetan P Hanakanahalli, Jagannathan Venkataraman

CPC Classification: H03M1/1061 (CODING; DECODING; CODE CONVERSION IN GENERAL (using fluidic means ; optical analogue/digital converters ; coding, decoding or code conversion, specially adapted for particular applications, see the relevant subclasses, e.g. , , , , , , , , , , , ; ciphering or deciphering for cryptography or other purposes involving the need for secrecy ))

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