Voltage_controlled_oscillator_split_supply

Published:2009/7/25 4:36:00 Author:Jessie | From:SeekIC

This circuit shows the baisc connection for an XR-2207 connected for split-supply operation. The output frequency(both sine and triangle) is controlled by C (pin2/3)and R1 through R4 .If a single timing resistors is used, the frequency is 1/RC. Otherwise ,the frequency is either 1/(R1//R2)C or 1/(R1//R4)C. Timing resistors R1 through R4 are activated by the logic signals at the binary keying input (pin 8/9),as shown in Fig,5-52B.Figure 5-52C shows the electrical characteristics.



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