Digital to analog converter system and method with...

Details Digital to analog converter system and method with... Digital to analog converter system and method with...

2009-11-24

2011-12-27

Mai, Lam T (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S061000, C341S141000, C375S315000

Reexamination Certificate

active

08085177

ABSTRACT:
Tri-level scrambling in a digital to analog converter system is achieved by, in response to a tri-level binary code input, disabling a negative data directed scrambler circuit when the input code is in the positive cycle portion, disabling a positive data directed scrambler circuit when the input code is in the negative cycle portion and disabling both scrambler circuits upon a zero input code for reducing low level distortion due to a reversal of current during crossover between those cycles.

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K. Ola Andersson et al., Dynamic Element Matching in Decomposed Digital-to-Analog Converters, Norchip Conference 2004, Nov. 8-9, 2004, p. 187-p. 190.
International application No. PCT/SG2010/000355, International filing date:Sep. 22, 2010, International Searching Report mailing date: Jun. 30, 2011.

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