D/A conversion circuit

Details D/A conversion circuit D/A conversion circuit

2008-12-24

2010-11-30

Williams, Howard (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

With particular solid state devices

C341S136000, C330S288000, C327S543000

Reexamination Certificate

active

07843372

ABSTRACT:
In an mode of this invention, a digital/analog conversion circuit, includes: a digital/analog conversion portion which outputs a first current according to an input digital signal; and a first current mirror circuit which generates a mirror current according to the first current and outputs the mirror current as an analog signal, the digital/analog conversion circuit converting the digital signal into the analog signal, and further including: a second current mirror circuit, which generates a first mirror current according to the first current; and a third current mirror circuit, which is connected to a reference voltage, and to which the first mirror current is input, and which generates a second mirror current equal to the first current, according to the first mirror current, between the digital/analog conversion portion and the second current mirror circuit.

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patent: 2004/0233087 (2004-11-01), Blackburn
patent: 2002-9623 (2002-01-01), None

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