The PLL IC is usable over the frequency range Hz to kHz. It has highly stable centre frequency and is able to achieve a very linear FM detection. LM Phase-Locked-Loop IC DIP ICs – Linear · Home · About Nightfire · Datasheets · Shipping · PCB Repair · Dealers · Engineering · Contact. And I plan using LM on the receiver side. At this point I need an explanation about the operation of the LM IC. From my understanding.

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PLL IC | Electronics Tutorial

Submitted by admin on 8 December It looks like there is NOT a frequency detector portion for the phase detector, so the lock-in range is limited. Which program can simulate the LM? And I plan using LM on the lm5655 side. Pin Configuration LM is a 14 pin device and the function of each pin is stated lmm565.

You can end up with a lag, or worst case the loop will break lock and put out meaningless information. And, I didn’t understand what you meant by “pull-in” effect.

LM PLL IC | NightFire Electronics LLC

When a signal is given at the input, the frequency of both input signal and the VCO output is compared. Hierarchical block is unconnected 3.


Equating complex number interms of the other 6. Heat sinks, Part 2: 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 lm56 frequency.

PLL IC 565

How can the power consumption for computing be reduced for energy harvesting? But how can you compare the phases of two signals if their frequencies are different? Now consider no input is given, under such case the VCO will be in free running mode generating signal whose frequency is determined by the capacitor and resistor connected at the pin 8 if pin 9.

However, this is a rather complicated non-linear process. Does LM really work as I explained, or operate in a different manner?

I understand that it is related with the operation of the IC. I decided to design the transmitter side by a VCO. Originally Posted by hkBattousai. Choosing IC with EN signal 2. Part and Inventory Search.

I have two questions to ask: Nevertheless, pull-in of the PLL occurs also when both frequencies are different. Synthesized tuning, Part 2: Hi hkBattousai, as you were interested in the pull-in action, attached please find a pdf document showing this process as a simulation result.


This is how a phase locked loop worksthe VCO output signal frequency will always tries to keep up with the input signal frequency.

Input port and input output port declaration in top module 2. I think the figure is selfexplaining. TL — Programmable Reference Voltage.

5 Pcs LM565CN Dip-14 Lm565 Phase Locked Loop

But if you have questions, send a reply. Is there anything necessary to correct or add? Digital multimeter appears to have measured voltages lower than expected.

Tags Phase Locked Loop.

As a consequence of trying to correct this error, the onboard VCO frequency also tracks higher in frequency–trying to keep the onboard VCO in phase-lock to the external source. The VCO will increase or decrease the signal frequency depending of the fed voltage of amplifier. The real input reference frequency is 54 kHz instead of 55 kHz as indicated in the block diagram.

The product detector creates an output signal which is proportional to the phase difference rather than to the difference of both frequencies. Originally Posted by LvW.