Calibration of gain and timing mismatch for TI-ADCs with signals in all Nyquist zones using adaptive noise canceller
Calibration of gain and timing mismatch for TI-ADCs with signals in all Nyquist zones using adaptive noise canceller
This paper presents a novel all-digital background calibration technique for general TimeInterleaved Analog-to-Digital Converters (TIADCs). Calibration of gain and timing mismatch of TIADCs using the estimation technique is designed based on the principle of the Adaptive Noise Canceller (ANC). In this ANC, there are two stages in gain, timing mismatch estimation in which a cascade structure of the correction and estimation is proposed to guarantee that our calibration achieves high performance.