Patent Number: 8,791,846

Title: Apparatus and method for calibrating offset voltage and continuous time delta-sigma modulation apparatus including the same

Abstract: When an enable signal representing an offset calibration mode is received, a continuous time delta-sigma modulation apparatus generates a first signal using first and second pulse signals representing outputs of the continuous time delta-sigma modulation apparatus and an operation frequency of the continuous time delta-sigma modulation apparatus, generates first and second output bits by performing a counting operation according to a counting method that is determined according to a pulse signal of first and second comparators, applies a voltage corresponding to the first output bit to a body of a first transistor of a primary integrator, and applies a voltage corresponding to the second output bit to a body of a second transistor of the primary integrator.

Inventors: Cho; Young Kyun (Daejeon, KR), Jung; Jae Ho (Daejeon, KR), Lee; Kwangchu (Daejeon, KR)

Assignee: Electronics and Telecommunications Research Institute

International Classification: H03M 3/00 (20060101)

Expiration Date: 7/29/12018