Digital/analog converting apparatus and digital/analog...

Details Digital/analog converting apparatus and digital/analog... Digital/analog converting apparatus and digital/analog...

2006-11-02

2008-10-14

Jeanglaude, Jean B (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S144000, C341S172000

Reexamination Certificate

active

07436341

ABSTRACT:
A digital/analog converting apparatus and digital/analog converter are provided. The digital/analog converter includes an operational amplifier, a first filter, a first switch, a second filter, a number of conversion units and a second switch. The operational amplifier has an output terminal, an inverse-phase input terminal and a non-inverse-phase input terminal coupled to a reference voltage. The first filter is coupled between the output terminal and the inverse-phase input terminal. The second filter is coupled between the output terminal via the first switch and the inverse-phase input terminal. Each of the conversion units includes a capacitor. The second switch is coupled between the inverse-phase input terminal and the conversion units, and the conversion units are connected in parallel between the second switch and the output terminal.

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