Digital to analog converter

Details Digital to analog converter Digital to analog converter

2009-06-25

2010-12-28

Young, Brian (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S144000

Reexamination Certificate

active

07859445

ABSTRACT:
An embodiment of a digital to analog converter (DAC) with two outputs is provided. The DAC is controlled by an n-bits input signal and comprises a reference voltage circuit generating (2n+1) reference voltages, a first switch array and a second switch array. The first switch array receives and outputs 2nselected reference voltages among the (2n+1) reference voltages to the second switch array. The second switch array outputs a first voltage via a first output terminal and a second voltage via a second output terminal according to the input signal, wherein the (2i+1)th reference voltages are directly transmitted to the second switch array, and when the first bit of the input signal is at a first voltage level, the first voltage is transmitted to the second output terminal, and the second voltage is transmitted to the first output terminal.

REFERENCES:
patent: 7006027 (2006-02-01), Lan et al.
patent: 2002/0121995 (2002-09-01), Tabler

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