D/A conversion circuit

Details D/A conversion circuit D/A conversion circuit

2011-08-02

2011-08-02

Lauture, Joseph (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S145000

Reexamination Certificate

active

07990300

ABSTRACT:
DAC includes a reference current setting unit (RCSU) that sets reference current, and current cell output unit (CCOU) including plurality of current sources, the current sources being configured to output currents corresponding to the reference current, the CCOU being configured to generate analog voltage signal according to an input digital signal, wherein the RCSU includes, reference current source (RCS) that generates the reference current, first and second resistance through which the reference current flows, selection control circuit that, when amplitude level of the analog voltage signal is to be changed, selects at least one of the first and second resistances and connect the selected resistance to the RCS, and reference current control circuit that controls current amount of reference current of the RCS according to voltage generated by resistance selected from among the first and second resistances.

REFERENCES:
patent: 7557743 (2009-07-01), Imai
patent: 3-40524 (1991-02-01), None
patent: 2001-136088 (2001-05-01), None
patent: 2002-26729 (2002-01-01), None
patent: 2004-80238 (2004-03-01), None
patent: 2006-197052 (2006-07-01), None

Affiliated with

Also associated with

Rating

D/A conversion circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with D/A conversion circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and D/A conversion circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2771169