Introduction to LM565 IC

Hello, readers welcome to new post. Today we will learn Introduction to LM565 IC. This integrated circuit is created for different applications such as division of frequency multiplication of frequency and demodulation and is known as phase-locked loop IC. It has 2 main parts first one is a voltage-controlled oscillator and the second one is a phase detector.

This post will cover its basics pinouts features working and some other parameters. So let get startedwith Introduction to LM565 IC.

Table of Contents

The LM565 phase-locked IC used in general purpose applications and comprises of linear voltage controller oscillator and a stable circuit that helps for less distorted modulation. It also comes with a double-phase detector system that offers high-quality carrier suppression.

For adjustment, the frequency of VCO exterior capacitor and resistance is used and a tuning range of ratio 10:1 can get with the use of a connected capacitor
Its different features such as closed-loop system, bandwidth, and capture response speed can be regulated through use of resistor and capacitor
Its loop can be damaged among the VCO and phase detector for placement of a digital frequency divider to get eh frequency multiplication
Its operating temperatures range is minus fifty-five to one twenty-five centigrade.

Features of LM565 IC

Its main features are discussed here
Its highest power dissipation is fourteen hundred megawatts
Its power supply current value is 12.5 mA
The value of storage temperature is minus sixty-five to one fifty centigrade
The highest operating temperatures is plus-minus five volts to plus-minus twelve volts
The operating frequency for VCo is five hundred kilohertz

It can operate t different values of input volts
It gives the 0.2 percent linearity for demodulated output

Feature	Details
Power Supply Range	±5V to ±12V
Maximum Operating Voltage	±12V
Maximum Power Dissipation	1400 mW
Maximum VCO	500 kHz
Input Compatibility	TTL & DTL compatible
Hold-in Range	±1% to above ±60%
Power Supply Current	12.5 mA
Demodulated Output Linearity	0.20%
Linear Triangle Signal Availability	Through in-phase zero crossings
Temperature Range	-55°C to +125°C
Temperature Range (Storage)	-65°C to +150°C
Frequency Stability of VCO	200 ppm/°C

Pinout of LM565 IC

Its main pinout is explained here
Pin 1 -Vcc that used for negative power supply
Pin 2 is used for phase detector
Pin 3 is also a phase detector input
Pin 4 VCO output pin
Pin 5 is input of the phase detector
Pin 6 is the inner amplifier reference o/p
Pin 7 used for VCO volts control
Pin 8 is resistance for the free-running frequency of VCO
Pin 9 Timing capacitor for VCO
Pin +Vcc Here positive supply given
Pin 11 to 14 are not in use

Pin	Name
1	-Vcc
2	Input
3	Input
4	VCO output
5	Phase comparator VCO input
6	Reference output
7	VCO control voltage
8	Timing Resistor
9	Timing Capacitor
10	+Vcc
11	NC
12	NC
13	NC
14	NC

LM565 Alternatives

MC1648
MAX2880
74HCT9046A
74LV4046A

LM565 IC Applications

Common applications of LM565 are explained here
it used in coherent demodulators
Used for generation of signal

Used in telemetry receivers
Used in SCA demodulators
Used for multiplication and division of frequency
Used in tone decoders
Used in the frequency synthesizer
Used in modems
Used for data and type synchronization
Used for FSK modulation and FM modulation

Working of LM565

Here we have made a block diagram of LM565 for understanding of working.
The understanding of the inner design of module Pine 3 is grounded as a reference point, and Pin 2 gets input signals.
These signals interact with feedback from the voltage controller oscillator at the phase detector, which makes a comparison of frequency and phase.
If they are in the same phase, the detector provides zero output with stability.
It does not match the phase detector and produces a voltage that is amplified for setting the VCO frequency.
It is good for configuring the input signal, and VCO provides synchronization and increases signal stability.
The VCO produces a signal that has a frequency configured with an external component at pin 8 and pin 9 without input signals.
If an input signal exists, VCO set frequency for matching provides accurate frequency regulation.
This work is used for communications systems and audio synthesizers.

Read also

That is all about the LM565 IC all details has explained if you have any further query ask in the comments. Thanks for reading have a nice day

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