Device for digital-analog conversion with high linearity

Details Device for digital-analog conversion with high linearity Device for digital-analog conversion with high linearity

1998-05-04

2000-05-23

Williams, Howard L.

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

341144, H03M 300

Patent

active

060670363

ABSTRACT:
A digital-analog converter having high linearity is based on two sigma-delta modulators of second order which are fed back in a cascaded fashion and via differentiators. The first modulator has a quantizer with only three stages, an output signal of which delivers an analog output signal via a three-stage digital-analog converter and a low-pass filter. The particularly high linearity, the good stability and the relatively large bandwidth with reference to clock frequency are advantages of the digital-analog converter.

REFERENCES:
patent: 4704600 (1987-11-01), Uchimura et al.
patent: 4876543 (1989-10-01), Van Bavel
patent: 5028924 (1991-07-01), Thompson
patent: 5191332 (1993-03-01), Shieu
patent: 5231395 (1993-07-01), Irwin et al.
patent: 5235334 (1993-08-01), Manvar et al.
patent: 5392040 (1995-02-01), Hayashi
patent: 5583501 (1996-12-01), Henrion et al.
patent: 5608401 (1997-03-01), Viswanathan et al.
"Integrated Analog-To-Digital And Digital-To-Analog Converters" by Rudy Van De Plassche--Kluwer Academic Publishers--pp. 367-381, (no date).

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