LC7120 PLL Frequency Synthesizer


This 27 MHz band, PLL frequency synthesizer LSI chip is designed specifically for CB transceivers. The integrated circuit`s incorporates PLL circuitry and a controller for CB applications on a single CMOS chip.
This PLL-circuit use a 6 bit ROM programmable divide-by-N counter. The ROM-table is programmed from factory.

1P1Programmable input 1
2P2Programmable input 2
3P3Programmable input 3
4P4Programmable input 4
5P5Programmable input 5
6P6Programmable input 6
7IFSIF Select - HIGH=10.695MHz LOW=9.785MHz
8T/RTransmit=LOW Receive=HIGH
9VccPositive Supply Voltage
10RIX-tal Input
11ROX-tal Output
12RBOscillator Output (Buffered)
131/2RReferency oscillator output divided by 2
14F inVCO Frequency Input
15LD2Loock Detector 2
16LD1Loock Detector 1
17PDPhase Detector Output
18AILoop filter Amplifier Input
19AOLoop filter Amplifier Output

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

Go Back To The Components Page

Go Back To The Main Home Page

Copyright © The Defpom 1997-2008