Avago Technologies International Sales Pte. Limited

Acer Chou

Chun-Ying Chen

Massimo Brandolini

Pin-En Su

Mo Maggie Zhang

Hemasundar Mohan Geddada

Zen-Che Lo

A method and apparatus for calibrating a CDAC-based analog-to-digital converter is disclosed. In one aspect, a calibration method includes: applying a predetermined pattern of voltages to first plates of a group of N capacitors, wherein N is an integer greater than 1; applying a zero voltage to the second plates of the group of N capacitors, wherein the second plates of the group of N capacitors are connected in common; removing the zero voltage to the second plates of the group of N capacitors; applying a zero voltage to all of the first plates of the group of N capacitors; quantizing a voltage on the second plates of the group of N capacitors; converting the quantized voltage on the second plates of the group of N capacitors to an adjustment value; and loading the adjustment value into a lookup table.

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Irvine, CA, United States of America

Acer Chou