FREQUENCY SHIFT SIGNAL GENERATING SYSTEM USING PLL

摘要: PURPOSE:To generate a frequency shift signal with simple constitution, by changing the dividing ratio of programmable divider PLL circuit according to an input signal. CONSTITUTION:A 13 consists basic oscillator 8, phase comparator 9, low-pass filter 10, voltage-controlled 11, and 12. A can be obtained, inputting 1N 12 via level converter state change output circuit. That is, comparison is made at 9 for f0/N (f) 8 (f0) 11 controlled specified depending on N obtained.