Current output type digital-analog conversion circuit, and...

Details Current output type digital-analog conversion circuit, and... Current output type digital-analog conversion circuit, and...

2011-04-12

2011-04-12

Lauture, Joseph (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S144000

Reexamination Certificate

active

07924201

ABSTRACT:
A current output type digital-analog conversion circuit which outputs a current signal includes a decoder for decoding higher-order bits of input digital data, a plurality of binary current generators, and a current adder. Each of the binary current generators includes a device for outputting a binary current which increases linearly as binary values according to lower-order bits of the input digital data, and a device for outputting a predetermined all-ON current. Either the device for outputting the binary current or the element for outputting the all-ON current of the binary current generator is selected according to a decode signal output by the decoder. The current adder adds up and outputs the binary currents and the all-ON currents output by the plurality of binary current generators.

REFERENCES:
patent: 6236346 (2001-05-01), Schofield et al.
patent: 58-194425 (1983-11-01), None
patent: 04-081129 (1992-03-01), None
patent: 2004-112183 (2004-04-01), None

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