MSC42502P PLL Frequency Synthesizer

Overview

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.

Pin	Name	Description
1	F in	VCO Frequency Input
2	P4	Programmable input 4
3	P3	Programmable input 3
4	P2	Programmable input 2
5	P1	Programmable input 1
6	NC	No Connection
7	PD	Phase Detector Output
8	LD	Loop Detect - Unlocked=LOW Locked=HIGH
9	GND	Ground
10	RI	Reference Oscillator Input
11	RO	Reference Oscillator Output
12	P8	Programmable input 8
13	P7	Programmable input 7
14	P6	Programmable input 6
15	P5	Programmable input 5
16	Vcc	Positive Supply Voltage

This counter shows the number of hits since the 29th January 2000

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