D/A converter

Details D/A converter D/A converter

2005-11-01

2005-11-01

Young, Brian (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Analog to digital conversion

C341S155000

Reexamination Certificate

active

06961014

ABSTRACT:
A D/A converter formed on a semiconductor substrate includes a plurality of resistance strings which are provided between a low voltage terminal and a high voltage terminal, each of the resistance strings including a plurality of resistances connected in series. The resistance strings to be connected at odd-numbered positions are arranged on the substrate in order of increasing in a direction from a near side of the terminal to which the low voltage is applied to the far side thereof, and the resistance strings to be connected at even-numbered positions are arranged on the substrate in order of increasing in a direction from the far side of the terminal to the near side. A voltage at a junction point of the resistances constituting the resistance string is selectively output in accordance with input data to be converted.

REFERENCES:
patent: 5014054 (1991-05-01), Oshita
patent: 5402127 (1995-03-01), Toda
patent: 5977898 (1999-11-01), Ling et al.
patent: 6255978 (2001-07-01), Chang et al.
patent: 6567026 (2003-05-01), Gorman
patent: 61026330 (1986-02-01), None
patent: 1098322 (1989-04-01), None
patent: 6152425 (1994-05-01), None
patent: 11145835 (1999-05-01), None

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