| 摘要 |
A pipelined digital-to-analog converter "DAC" converts a digital input to an analog output. The pipelined DAC has a plurality of stages. A first of the plurality of stages is coupled to an initialization capacitor and ground. Each of the remainder of the plurality of stages is coupled to a respective previous stage. The capacitor (54) has first and second plates. The capacitor receives a charge at the first plate in accordance with an associated bit of the digital input. The first switch (56) coupled the first plate of the capacitor to ground when the capacitor is not receiving the charge. The second switch (58) couples the second plate of the capacitor to ground when the capacitor is receiving the charge. Coupling the capacitor to ground reduces the effect of stray capacitance in the pipelined DAC, improving its performance.
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