CPC H03L 7/0992 (2013.01) [H03L 7/0893 (2013.01); H03L 7/0995 (2013.01); H03L 2207/06 (2013.01)] | 20 Claims |
1. An apparatus comprising:
a first circuit configured to generate an output signal having a first frequency in response to a voltage level of a first input signal and a value of a second input signal; and
a second circuit configured to perform a calibration operation to determine the value of the second input signal by (i) setting the voltage level of the first input signal to a reference voltage level and (ii) adjusting the value of the second input signal based on a reference frequency signal having a second frequency, said output signal having the first frequency, and a value of a third input signal representing a target frequency for said put signal.
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