Phased Locked Loop (PLL) Electronic Circuits

Phased Locked Loop (PLL) Circuits, Page 2
PLL's: #'s - A B - O P Q - Z
Last Updated on: Friday, March 12, 2010 12:07 PM

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Barker Code-Locked Loop Synchronous Demodulator - A simple, low component count phase locked loop that locks onto and detects the amplitude of an incoming base band 7 bit Barker code using a switched resistor demodulator that is driven directly by a microcontroller's output pins…(circuit added 6/07)

Basic PLL Filters for the RFPIC™ rfHCS - Microchip Application Note Published 18-Jul-02 (app note added 2/06)

BIAS COMS PLL transmitter - This schematic originally comes from Bias Comms and was originally intended for use in combination with a BGY33 or BGY133 module. The PLL is very straightforward and should not be too difficult to build. ….(design added 11/08)

Clock multiplier Circumvents PLL - 05/13/99 EDN-Design Ideas:.....(design idea added 2/06)

Clock Recovery PLL Fits into Single PLD - 11/23/95 EDN-Design Ideas: (design idea added 2/06)

CMOS RF PLL Sythesizer - (electronic design / schematic added 2/06)

CMOS RF Synthesizer (Harry Lythall ) - Synthesizer based on available CD4059. CD4046 and CD4060 ICs. (circuit added 08/07/06)

DC Accurate Filter Eases PLL Design - DN7 Design Notes (Linear Technology) (app note added 1/06)

Digital PLL Synthesis - National Semiconductor Application Note 04-Nov-1995 (app note added 4/02)

Fast Locking Scheme for PLL Frequency Synrhesizers - National Semiconductor Application Note (app note added 2/06)

Frequency Synthesizer - (electronic schematic / circuit added 4/02)

Improved CMOS RF PLL Sythesizer - (electronic design / schematic added 2/06)

Improved CMOS RF Synthesizer - Lock range extended up to about 400:1 (50KHz, 2MHz). Spectral purity improved, reduced reference frequency FM ripple. Output level buffered to over 200mW RF power output. Unecessary DIP switches removed, silly combinations not possible. BMP format single-sided PCB foil available for downloading. External VCO/Prescaler PCB to follow shortly (up to 150MHz) ….(electronic schematic added 11/08)

Interfacing a KEELOQ® Encoder to a PLL Circuit - Microchip Application Note Published 19-Mar-01 (app note added 2/06)

Introduction to Single Chip Microwave PLL's - National Semiconductor Application Note (app note added 2/06)

Loading PLL Frequency Synthesizers with COP8SAx7 - National Semiconductor Application Note (app note added 2/06)

Low cost Programmable Oscillator operates at 2 GHz - 05/11/00 EDN-Design Ideas: All wireless communication systems need a local oscillator. Figure 1 shows a low-cost PLL circuit for the 2-GHz band for such applications as industrial, scientific, and medical (ISM)and satellite personal-communication systems (S-PCS). The central.....(design idea added 7/03)

LTC1436-PLL Low Noise Switching Regulator Helps Control EMI - DN141 Design Notes (Linear Technology) (app note added 1/06)

MC145151 PLL FM Transmitter - This PLL has been designed with an old Motorola circuit :the MC145151. The VCO is based on a "Colpitz" oscillator equiped with a Fet Transistor.(J310) Two varicap Diodes are used in order to reduce the global noise of the VCO. In addition,these two diodes allow the PLL to keep the lock status through a large range of climatic conditions. An another J310 is used in order to match the impedance between the oscillator and the fist amplifier stage. A MSA1105 from Minicircuits increases the RF power level coming from the VCO to +14dBm. A simple low pass filter rejects the second harmonic to -20 dB.(Worst case) Finally, a 7 dB attenuator and a second amplifier stage (BFR96S) achieve this radio design. ….(circuit design added 11/08)

MC145170 PLL FM Transmitter - In order to simplify the transmitter design, we've used the new pll circuit from Motorola :the MC145170. This PLL includes the prescaler and a serial standard bus called SPI. (circuit added 04/05/06)

MC145170 PLL Synthesizer with PIC16F84 - MC145170 PLL Synthesizer with PIC16F84 ….(electronic schematic added 11/08)

Multicarrier WCDMA Feasibility - AN-807)-Analog Device Application Notes (app note added 2/06)

New Phase Locked Loops - National Semiconductor Application Note 04-Nov-1995 (app note added 4/02) Have advantages as frequency to voltage converters & more

Noise Floor Measurement of PLL Frequency Synthesizers - National Semiconductor Application Note (app note added 2/06)

Optimizing for Low Skew & Phase Error on PLL Based Clock Generators - National Semiconductor Application Note (app note added 2/06)

Optimizing VCO/PLL Evaluations & PLL Synthesizer Designs - AN-95-006 Application Note MiniCircuits.com (app note added 04/05/06)

PLL's: #'s - A B - O P Q - Z