Generalized Blind Mismatch Correction for a Two-Channel Time-Interleaved ADC: Analytic Approach

—Time-interleaved analog-to-digital converters (TIADC) require mismatch calibration to achieve high signal-to-noise ratios. In this paper, we present a new blind technique for M=2 TIADC’s with following properties: (1) correction of general mismatches as well as static gain and timing error, (2) unique multi-parameter identification under realistic assumptions, and (3) analytic error measure and gradient. The proposed method overcomes the limitation of traditional gain-timing mismatch model. Timefrequency transformation is eliminated by analytic approach, enhancing efficiency.

• Type: Conference
• Year: 2007
• Where: ISCAS
• Authors: Munkyo Seo, Mark J. W. Rodwell
• Keywords: Analytic Error Measure, ISCAS 2007, Mismatch Calibration, —Time-interleaved Analog-to-digital Converters