PLL Synthesizer
MB8719 MB8734 RCI8719 PLL Synthesizer
Overview
This PLL-circuit use a 6 bit (MB8734 and RCI8719) or 7 bit (MB8719) BCD ...
Description
MB8719 MB8734 RCI8719 PLL Synthesizer
Overview
This PLL-circuit use a 6 bit (MB8734 and RCI8719) or 7 bit (MB8719) BCD binary programmable divide-by-N counter.
DownDown-converting of the frequency to the divider divider
This PLL Circuit use a Mixer and a X-Tal Oscillator to convert the output frequency f Circuit. The X-Tal frequency is f
XTAL
OUT
to the f
IN
to the PLL
=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 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Out In Out In CP LD
Name Inverter out Inverter in Inverter out Inverter in Charge Pump Loop Detect Oscillator input Oscillator output Positive Power Supply
Description
OSC in OSC out VDD P6 P5 P4 P3 P2 P1 P0 F in VSS
Programmable inputs (Binary) (Only MB8719) Programmable inputs (Binary) Programmable inputs (Binary) Programmable inputs (Binary) Programmable inputs (Binary) Programmable inputs (Binary) Programmable inputs (Binary) Frequency input GND Ground
Explanation of pin function terms
TRUTH TABLE FOR RCI8719 AND MB8734 P5 0 0 0 0 0 1 P4 0 0 0 0 0 1 P3 0 0 0 0 0 1 P2 0 0 0 0 1 1 P1 0 0 1 1 0 1 P0 0 1 0 1 0 1 Divide by N 0 + 128 1 + 128 2 + 128 3 + 128 4 + 128 64 + 128
TRUTH TABLE FOR MB8719 P6 0 0 0 0 0 0 1 1 1 1 1 1 1 1 P5 0 0 0 0 0 1 0 0 0 0 0 1 P4 0 0 0 0 0 1 0 0 0 0 0 1 P3 0 0 0 0 0 1 0 0 0 0 0 1 P2 0 0 0 0 1 1 0 0 0 0 1 1 P1 0 0 1 1 0 1 0 0 1 1 0 1 P0 0 1 0 1 0 1 0 1 0 1 0 1 Divide by N 0 + 128 1 + 128 2 + 128 3 + 1...
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