Coded data generation or conversion – Analog to or from digital conversion – Multiplex
Reexamination Certificate
2007-11-06
2007-11-06
Jeanglaude, Jean Bruner (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Multiplex
C341S155000
Reexamination Certificate
active
11151133
ABSTRACT:
System and method for improved time-interleaved analog-to-digital converter arrays which reduces sampling mismatch distortion found in prior art arrays. There may be two causes of non-uniform sampling mismatch in a TI-ADC array, a mismatch due to skew and a mismatch due to clock jitter. To minimize non-uniform sampling mismatch, the mismatch due to skew can be addressed. A preferred embodiment comprises adjusting a delay imparted on the sampling clock by an adjustable delay in each channel of a plurality of channels in the TI-ADC array to minimize skew and randomly switching between two delays that span a zero-skew delay to reduce residual skew in each channel and thus eliminate (or reduce) frequency domain tones caused by non-uniform sampling mismatch.
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Bright William J.
Kinyua Martin Kithinji
Brady III Wade J.
Jeanglaude Jean Bruner
Telecky , Jr. Frederick J.
Texas Instruments Incorporated
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