Digital-to-analog converter

Details Digital-to-analog converter Digital-to-analog converter

2007-01-09

2007-01-09

Barnie, Rexford (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S154000

Reexamination Certificate

active

11168334

ABSTRACT:
A DAC has an N-bit R-string DAC section and an (M-N)-bit interpolation DAC section. The N-bit R-string DAC section has a plurality of resistors and a 2-of-N selector. The resistors are electrically connected in series to provide a plurality of voltage levels. The 2-of-N selector is coupled to the series-connected resistors, and is arranged to select two neighboring voltage levels according to an N-bit MSB subword. The (M-N)-bit interpolation DAC section is coupled to the N-bit R-string DAC section, and is arranged to interpolate an analog output signal from the two neighboring voltage levels according to an (M-N)-bit LSB subword.

REFERENCES:
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patent: 6246351 (2001-06-01), Yilmaz
patent: 6556162 (2003-04-01), Brownlow et al.

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