Description: This package contains a complete PLL With a low-power Voltage Controlled Oscillator [VGO] and two Phase Comparators that have a common signal input amplifier and a common comparator input. The device also contains a 5.2V zener diode for supply regulation, if necessary.

 

Functional Diagram and/or Package:

 


 

 

 

Pin Names:

Vdd - Positive Supply Voltage [3V to 15V]

Vss - Ground

PP - Phase Pulses

PC - Phase Comparator Output

COMP - Comparator

VCD DUT - VCD Output

INH – Inhibit

C1A, C1B - Capacitor (31

Z - Zener

IN - Signal In

R1, R2 - Resistors R1 and R2 Connections

DEM - Demodulator Output

VCD IN - VCD Input

 

Truth Table: none

 

Operation Mode:

a) VCD Frequency

The frequency is determined by the voltage applied to pin 9, the capacitor between pin 6 and 7, and the resistor to pin 11l (Figure 1)

 


 

 

The capacitor has a minimum value of 50 pF, and the resistor on pin 12 can assume values between 'lClk and infinity. Output is in pin 4.

 

1l
1l

 

- It is an exclusive OR system.

- This system must have square waves on both pins 3 and 14.

This system is applied to narrow frequency ranges.

 

2
2

 

- Frequency range of 1000:1.

Any input duty cycle.

 

Electrical Characteristics:

 


 

 

 

Other Devices:

The LM/NE567 is a PLL that can be used in many applicatior where the 4046 is found, although it isn't a CMOS device.

 

Applications:

FM Demodulator and Modulator

Tone Decoders

Frequency Synthesis

Data Synchronization

Voltage-to-Frequency Converters

Modems [FSK]

Signal Conditioning

Tone Generators

 

Observations:

Practical circuits using this device are covered in the site.

 

 

Datasheets


N° of component