Practical Electronics/IC/4046

The 4046 contains one Voltage Controled Voltage that require external capacitor and two resistors, two differents phase comparators and a zener diode of 5.2V. Is used like a low frequency synthesizer, frequently used with 4020, 4022, 4024 and others frequency dividers.

Used in applications like FM and FSK demodulators, VCOs, etc.