| 摘要 |
A digital/analog converting apparatus and digital/analog converter is disclosed. 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, and the non-inverse-phase input terminal is coupled to a reference voltage. The first filter has one end coupled to the output terminal and the other end coupled to the inverse-phase input terminal. The second filter has one end coupled to the output terminal via the first switch and the other end coupled to 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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