Technique to Improve the Performance of Time-Interleaved A-D Converters with Mismatches of Non-linearity

Interleaving is one method of configuring a highspeed waveform digitizer. Degradation of the dynamic range, however, results from co-channel mismatched characteristics among the individual ADCs. Especially, mismatches of the non-linear characteristics have not been analyzed so far. This paper constructs a mathematical model, and proposes a method for correcting mismatches of both linear and non-linear characteristics using a digital signal processing technique. This method does not require any additional hardware.

[1]  Huawen Jin,et al.  A digital-background calibration technique for minimizing timing-error effects in time-interleaved ADCs , 2000 .

[2]  Robert M. R. Neff,et al.  A 4 Gsample/s 8b ADC in 0.35 μm CMOS , 2002 .

[3]  Haruo Kobayashi,et al.  Explicit analysis of channel mismatch effects in time-interleaved ADC systems , 2001 .

[4]  W. Black,et al.  Time interleaved converter arrays , 1980, 1980 IEEE International Solid-State Circuits Conference. Digest of Technical Papers.

[5]  Koji Asami.  An Algorithm to Improve the Performance of M-Channel Time-Interleaved A-D Converters , 2007, IEICE Trans. Fundam. Electron. Commun. Comput. Sci..

[6]  Haruo Kobayashi,et al.  Total Harmonic Distortion Measurement System of Electronic Devices up to 100 MHz With Remarkable Sensitivity , 2007, IEEE Transactions on Instrumentation and Measurement.

[7]  Truong Q. Nguyen,et al.  A hybrid filter bank approach to analog-to-digital conversion , 1994, Proceedings of IEEE-SP International Symposium on Time- Frequency and Time-Scale Analysis.

[8]  H. Kobayashi,et al.  Channel linearity mismatch effects in time-interleaved ADC systems , 2001, ISCAS 2001. The 2001 IEEE International Symposium on Circuits and Systems (Cat. No.01CH37196).