Title :
Background calibration of time-interleaved ADC using direct derivative information
Author :
Benwei Xu ; Yun Chiu
Author_Institution :
Analog & Mixed-Signal Lab., Univ. of Texas at Dallas, Richardson, TX, USA
Abstract :
A new background calibration technique for correcting timing-skew mismatch errors in time-interleaved analog-to-digital converter (ADC) is reported. In this approach, the time derivative of the input signal is directly sampled and utilized for skew calibration. Reference ADC equalization is used in tandem to correct any static mismatch errors. Behavioral simulations show 26 dB and 44 dB improvement in signal-to-noise plus distortion (SNDR) and spurious-free dynamic range (SFDR) performance, respectively.
Keywords :
analogue-digital conversion; calibration; SFDR; SNDR; background calibration; direct derivative information; signal-to-noise plus distortion performance; skew calibration; spurious-free dynamic range performance; static mismatch errors; time-interleaved ADC; time-interleaved analog-to-digital converter; timing-skew mismatch errors; Arrays; CMOS integrated circuits; Calibration; Clocks; Convergence; Estimation; Timing;
Conference_Titel :
Circuits and Systems (ISCAS), 2013 IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-5760-9
DOI :
10.1109/ISCAS.2013.6572376
