Oscillator frequency control arrangement for a stereo decoder

Details Oscillator frequency control arrangement for a stereo decoder Oscillator frequency control arrangement for a stereo decoder

H - Electricity

03

D

350/85, 350/97

H03D 1/22 (2006.01) H04H 5/00 (2006.01)

Patent

CA 1269451

ABSTRACT A charge pump arrangement receives a digital error word representing an error signal and charges or discharges a capacitor in accordance with the sign of the error word by an amount that is proportional to the absolute value of the error word. The voltage produced in the capacitor is coupled to a frequency control terminal of a voltage controlled crystal oscillator that is used in, for example, a stereo decoder.

575077

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