Method of generating a digital signal that is representative...

Details Method of generating a digital signal that is representative... Method of generating a digital signal that is representative...

2004-11-30

2008-09-16

Mai, Lam T (Department: 2819)

Coded data generation or conversion

Converter calibration or testing

C341S155000

Reexamination Certificate

active

07425908

ABSTRACT:
A method for generating a digital signal representative of the pairing error between the channels of an analog digital conversion system with time interleaving, and a method for suppressing the errors thus calculated and an analog digital conversion system with time interleaving using same. The method comprises determining a spectrum (11-12) of the digital signal as a function of a frequency response of the analog digital conversion system with time interleaving (CAN10) to at least one analog calibration signal (IC), and generating a “comb” signal whose spectrum is composed of frequency lines kFs/N, where Fs is a sampling frequency and N a number of channels of the analog digital conversion system with time interleaving, and whose amplitude is dependent on the frequency response of the analog digital converter.

REFERENCES:
patent: 5294926 (1994-03-01), Corcoran
patent: 7049984 (2006-05-01), Wood et al.
patent: 7283074 (2007-10-01), Sheng et al.
patent: 06152410 (1994-08-01), None
Hummels D.M, Distortion Compensation for Time-Interleaved ADC, Jun. 4-5, 1996, IEEE.
Hummels D. M., et et al., Distortion Compensation for Time-Intrleved Analog to Digital Converters, IEEE 1996, Brussels, Belgum, Jun. 4-6, 1996.

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