| 摘要 |
Phase-locked loop circuitry includes charge pump circuitry (310), loop filter circuitry (300), and drag current circuitry (350). The charge pump circuitry (310) generates a charge pump current based on a phase of an input signal. The loop filter circuitry (300) receives the charge pump current. The drag current circuitry (350) generates a drag current to draw charge in the opposite directio from the charging current from the loop filter integration capacitor (340) in the loop filter circuitry (300). |
