MSC42502P PLL Frequency Synthesizer


This PLL-circuit use a 8 bit BCD binary programmable divide-by-N counter.

Down-converting of the frequency to the divider

This PLL Circuit use a Mixer and a X-Tal Oscillator to convert the output frequency f OUT to the f IN to the PLL Circuit.
The X-Tal frequency is f XTAL = f OUT - f IN
The output frequency can be changed by changing the mixing-xtal or add a new mixing-xtal to the oscillator.
1F inVCO Frequency Input
2P4Programmable input 4
3P3Programmable input 3
4P2Programmable input 2
5P1Programmable input 1
6NCNo Connection
7PDPhase Detector Output
8LDLoop Detect - Unlocked=LOW Locked=HIGH
10RIReference Oscillator Input
11ROReference Oscillator Output
12P8Programmable input 8
13P7Programmable input 7
14P6Programmable input 6
15P5Programmable input 5
16VccPositive Supply Voltage

CB Radio Banner Exchange