Digital-to-analog converter and code mapping method applied...

Details Digital-to-analog converter and code mapping method applied... Digital-to-analog converter and code mapping method applied...

2011-08-30

2011-08-30

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S144000

Reexamination Certificate

active

08009074

ABSTRACT:
A digital-to-analog converter includes an operational amplifying circuit, a switched capacitor circuit, an R-string sub-circuit, and a direct-charge transfer circuit. The operational amplifying circuit has a pair of differential input ends and a pair of differential output ends. The switched capacitor circuit is coupled to the pair of differential input ends of the operational amplifying circuit. The R-string sub-circuit is coupled to the switched capacitor circuit and the pair of differential input ends of the operational amplifying circuit. The direct-charge transfer circuit is coupled to the pair of differential input ends and the pair of differential output ends of the operational amplifying circuit.

REFERENCES:
patent: 4947169 (1990-08-01), Smith et al.

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