Make your own free website on Tripod.com
Home

TC9106 Aand TC9119 PLL Frequency Synthesizer

Overview

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 8 bit ROM programmable divide-by-N counter. The ROM-table is programmed from factory to 40 channels.

PinNameDescription
1VccPositive Supply Voltage
2RIReferency Oscillator Input
3CL
4LDLoop Detect - Unlocked=LOW Locked=HIGH
5PDPhase Detector Output
6AIAmp. Input
7AOAmp. Output
8T/RTransmit=HIGH Receive=LOW
9F inVCO Frequency Input
10P0Programmable input 0
11P1Programmable input 1
12P2Programmable input 2
13P3Programmable input 3
14P4Programmable input 4
15P5Programmable input 5
16P6Programmable input 6
17P7Programmable input 7
18GNDGround

Explanation of pin function terms


Programming Chart for TC9106

ChannelRX
Divided by
TX
Divided by
132543345
232563347
..........
2233063397
..........
4033423433
NOTES:
1. 91-count upshift on TX provides 455kHz offset for receiver IF mixing.
2. Reference and Programmable Dividers use 5kHz steps.

Example of VCO Determination, Channel 1:
3254 x 5kHz = 16.270MHz (RX-Mode)
3345 x 5kHz = 16.725MHz (TX-Mode)

Programming Chart for TC9119

ChannelRX
Divided by
TX
Divided by
133813472
233833474
..........
4034593550
NOTES:
1. Identical operation principal to TC9106. Only difference is the N-Codes themselves.
2. reference and Programmable Dividers use 5kHz step.
3. 91-count upshift on TX provides 455kHz offset for receiver IF Mixing.

Example of VCO Determination, Channel 1:
3381 x 5kHz = 16.905MHz (RX-Mode)
3472 x 5kHz = 17.360MHz (TX-Mode)
+ 1.25kHz tuned offsets.


CB Radio Banner Exchange