Abstract: An amplitude control circuit includes a pair of peak detectors. The pair of peak detectors are responsive to a voltage reference generator. The amplitude control circuit is configured to be responsive to an oscillating signal of a crystal oscillator and configured to generate a control signal to control an amplitude of the oscillating signal.
Type:
Grant
Filed:
September 21, 2010
Date of Patent:
October 16, 2012
Assignee:
QUALCOMM Incorporated
Inventors:
Zhiqin Chen, Nam V. Dang, Nan Chen, Thuan Ly