Digital to analog converter and method thereof

Details Digital to analog converter and method thereof Digital to analog converter and method thereof

2008-12-18

2010-10-12

Young, Brian (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S144000

Reexamination Certificate

active

07812754

ABSTRACT:
A digital to analog converter (DAC) has a plurality of transistor-resistor units connected in a string. Each of the transistor-resistor units of the DAC has a pair of transistors that are turned on/off by a pair of complementary control signals. Since the two transistors of each transistor-resistor unit are positioned symmetrically, an equivalent resistance would be determined precisely according to received digital codes, such that an output voltage of the DAC could be adjusted precisely based on the equivalent resistance.

REFERENCES:
patent: 3755807 (1973-08-01), Brown
patent: 4308467 (1981-12-01), Kolluri et al.
patent: 4580131 (1986-04-01), Seiler
patent: 6882136 (2005-04-01), Nazarian et al.
patent: 7602327 (2009-10-01), Din et al.

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