IC LM565 PDF

May Phase Locked Loop. General Description. VCO frequency is set with an external resistor and capacitor,.

Author:Tajind Mezilrajas
Country:Latvia
Language:English (Spanish)
Genre:Politics
Published (Last):24 April 2015
Pages:181
PDF File Size:20.59 Mb
ePub File Size:5.83 Mb
ISBN:449-5-41201-398-6
Downloads:68158
Price:Free* [*Free Regsitration Required]
Uploader:Akinosar



A Phase Lock Loop PLL is an electronic circuit, which locks the phase of the input signal with that of the output by keeping them synchronised. It achieves this through a closed loop feedback mechanism that compares the input signal with the output and makes the necessary corrections so that the phase remains synchronous.

The values of the components may have changed during design, so please use the full schematic in the final draft of the circuit diagram. The job of a PLL is to track an incoming frequency and match the phase precisely. However, in this circuit the feedback loop has a divided-by counter, which returns the feedback signal that is 16 fold less. As a result, the phase lock will attempt to compensate and multiply the incoming frequency 16 fold.

If the inputs signal changes, the phase detector will recognise the change in frequency and force the VCO to change the output accordingly, such that the output is equal to the new input frequency, thereby eliminating the error value from the phase comparator. The range of frequencies over which the PLL will track an input signal and remain locked is the lock frequency. This range is above and below the VCO free running frequency. The PLL will track and lock to any input frequency in this range.

If the input signal happens to be out of this lock range then the PLL will not be able to track it. As the input frequency gets closer to within the lock range, the PLL will jump into a locked condition.

As soon as the input frequency gets close to the VCO frequency, a condition known as capturing occurs. During this time, the PLL remains locked, and tracks any further changes to the input frequency. The range of frequencies over which a PLL can capture a signal is the capture range, and just as the lock range, the capture range centres around the free running frequency. Since the PLL captures within a narrow band, it behaves as a band-pass filter.

An engine turns at a maximum of revolutions per minute, and a minimum of revolutions per minute. For one rotation of the engine, the Hall sensor produces four pulses. These will make sure that the PLL can keep a lock within our desired frequency range. The full calculation is much lengthier; however, I have shortened it to make it easy to understand. Tach Pulse Multiplier Donate. Author: Peter J.

ACAULOSPORA SCROBICULATA PDF

LM565 Datasheet PDF

A Phase Lock Loop PLL is an electronic circuit, which locks the phase of the input signal with that of the output by keeping them synchronised. It achieves this through a closed loop feedback mechanism that compares the input signal with the output and makes the necessary corrections so that the phase remains synchronous. The values of the components may have changed during design, so please use the full schematic in the final draft of the circuit diagram. The job of a PLL is to track an incoming frequency and match the phase precisely. However, in this circuit the feedback loop has a divided-by counter, which returns the feedback signal that is 16 fold less. As a result, the phase lock will attempt to compensate and multiply the incoming frequency 16 fold.

5X5 PARITY PDF

Phase Lock loop (PLL) LM565 Circuit

A premium membership for higher-level suppliers. Relevancy Transaction Level Response Rate. Supplier Types Trade Assurance. Supplier A premium membership for higher-level suppliers. Supplier Location. Order : OK.

EJERCICIOS DE AXONOMETRICO RESUELTOS PDF

LM565N - LM565 Phased Locked Loop

The device mainly consists of two components, one is voltage controller oscillator and other is phase detector. The device being cheap can be used in applications where cost is considered. In the device pin 2 and pin3 are inputs where we can connect the input analog signal but usually pin 3 will be grounded and pin2 is used as input. The input signal goes in to the phase detector along with VCO feedback and this phase detector compares whether both signal are in same phase or frequency.

CANONICAL CSOUND REFERENCE MANUAL PDF

National Semiconductor

.

Related Articles