System and method for reducing transient responses in a phase lock loop with variable oscillator gain

System and method for reducing transient responses in a phase lock loop with variable oscillator gain

A system and method for reducing the transient responses in a phase lock loop (PLL) (100) with variable oscillator gain is disclosed. The system includes a charge pump (104) having an adapt mode and a normal mode of operation. The charge pump (104) also includes controlled trickle currents from curr...

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Hauptverfasser: ARMANDO J. GONZALEZ, VADIM DUBOV, WILLIAM J. MARTIN, JOSEPH A. CHARASKA
Format: Patent
Sprache:eng
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AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
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creator ARMANDO J. GONZALEZ
VADIM DUBOV
WILLIAM J. MARTIN
JOSEPH A. CHARASKA
description A system and method for reducing the transient responses in a phase lock loop (PLL) (100) with variable oscillator gain is disclosed. The system includes a charge pump (104) having an adapt mode and a normal mode of operation. The charge pump (104) also includes controlled trickle currents from current sources (208), (210) which are applied to the output (105), (107) of charge pump (104) to minimize the transient responses of the PLL (100). A programmable delay is provided in the charge pump (104) and is configured using a controller (122) based on the variable oscillator gain for the PLL (100). The configured programmable delay is used in the adapt mode of operation for adding a trickle current from the current source (210) to the adapt mode output (107).
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subjects AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
title System and method for reducing transient responses in a phase lock loop with variable oscillator gain
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