MC1648 - Voltage Controlled Oscillator
MOTOROLA SEMICONDUCTOR TECHNICAL DATA Voltage Controlled Oscillator Consider MC12148 for New Designs The MC1648 requires an external parallel tank circuit consisting of the inductor (L) and capacitor (C).
For Maximum Performance QL ≥ 100 at Frequency of Operation.
A varactor diode may be incorporated into the tank circuit to provide a voltage variable input for the oscillator (VCO).
The MC1648 was designed for use in the Motorola Phase Locked Loop shown in Figure 9.
This device may al
MC1648 Features
* 1µF Vin, INPUT VOLTAGE (VOLTS) Figure 8
* The 1200 ohm resistor and the scope termination impedance constitute a 25:1 attenuator probe. Coax shall be CT
* 070
* 50 or equivalent. NOT used in normal operation.
* Input resistor and cap are for test only. They are NOT necess
