Voltage-controlled oscillator gain calibration for two-point...

Details Voltage-controlled oscillator gain calibration for two-point... Voltage-controlled oscillator gain calibration for two-point...

2008-03-01

2009-11-03

Mis, David (Department: 2817)

Oscillators

Automatic frequency stabilization using a phase or frequency...

Tuning compensation

C331S017000, C331S025000, C331S044000, C375S376000

Reexamination Certificate

active

07612617

ABSTRACT:
A phase-locked loop (PLL) is arranged to receive high-pass data at a first input and low-pass data at a second input. A first digital input is coupled to a primary path through a digital-to-analog converter (DAC) and a second digital input is coupled to a feedback path of the PLL. The controller provides the first input and the second input during a calibration procedure. The controller adjusts first and second control inputs in an attempt to keep the input voltage to a voltage-controlled oscillator (VCO) in the PLL constant while determining the gain of the VCO in Hz/LSB.

REFERENCES:
patent: 2004/0156465 (2004-08-01), Schmandt

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