| 摘要 |
<p>A sampled-data analog circuit includes a level-crossing detector (30). The level-crossing detector controls sampling switches (s22n, s23n, s22p, s23p) to provide a precise sample of the output voltage when the level-crossing detector senses the predetermined level crossing of the input signal. The level-crossing detection may be a zero-crossing detection. An optional common-mode feedback circuit (400) can keep the output common-mode voltage substantially constant.</p> |
