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Phase Locked Loop Based Clock Generators - National Semiconductor
Application Note 04-Nov-1995 (app note added 4/02) |
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PLL IC forms simple Digital phase shifter - 01/04/96 EDN-Design
Ideas.... EDN is migrating links. This link is not verified. Search
the "title" EDN for new link. |
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PLL implements FPGA-based SDRAM controller - 03/26/98 EDN-Design
Ideas....As FPGA capabilities increase and time to market decreases, FPGAs
gain more acceptance for implementing both data and control paths. Thus,
they find wide use as controllers and datapath glue logic for fast-page
DRAMs. Synchronous DRAMs (SDRAMs), whose control signals use a clock input
as reference, are a natural target for FPGA-based controllers…. [Design Idea
by Eddy Debaere, Barco Graphics, Ghent, Belgium] |
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PLL Jitter & Its Effects in the CAN Protocol - Microchip
Application Note Published 15-Jun-04 (app note added 2/06)
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PLL Module - This schematic originally comes from a Dutch magazine
called Free Radio Magazine in the mid eighties. It's just a PLL nothing
more, nothing less. The resistor named R can be replaced by a 50 Ohm type if
the po.... |
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PLL Oscillator - This PLL was first published in March 1983 in Free Radio
Magazine and was re-published a year later in the same magazine. It uses the well
known 4046 as PLL and a CD4059 as programmable divider. ….(design added 11/08)
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[_OLD-ads-dont_upload/OLD I-ADS from web/ad-djandassoc.htm] |
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PLL synchronizes power supply IC - 07/16/98 EDN-Design Ideas....It is often
desirable to synchronize a switching power supply to a system clock or to a second
supply. If the power-supply controller has no synchronization pin, you can add a
low-value resistor in series with the oscillator capacitor, thereby developing a
synchronization....File has several circuits, please scroll to find this one....
[Design Idea by Kurk Mathews, Linear Technology Corp, Milpitas, CA] |
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PLL Synthesis - National Semiconductor Application Note 04-Nov-1995 (app
note added 4/02) |
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Phase locked loop fundamentals - Application Note MiniCircuits.com
(app note added 04/05/06) |
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Phase Locked Loop IC as a Communication System Building Block - National
Semiconductor Application Note 04-Nov-1995 (app note added 4/02) |
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Phased Lock Loop Schematic - (electronic circuit added 7/03) |
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Phase-Locked Loop Based Clock Generators - National Semiconductor
Application Note (app note added 2/06) |
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Phase-sequence indicator uses few passive components - 6-Jul-06 Issue of EDN
Debug three-phase power-line wiring with this easily constructed circuit.... [Design
Idea by Metodi Iliev, University of California—Berkeley; Edited by Brad Thompson and
Fran Granville] |
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PLL block schematics - .... |
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PLL Exciter - This is a PLL controller that works with the VCO/Modulator
that I designed. Use these two modules together for a complete baseband-capable
exciter unit. This PLL controller features a rock-stable crystal controlled
reference,.... |
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PLL FM Transceiver - TA8122N and PIC16F84 based FM PLL Transceiver....
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PLL FM Transmitter - This is PLL FM Transmitter using SAA1057 chip.
Transmitter can be operated from a PC through LPT port, or using a PC software as a
driver. |
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PLL FM Transmitter - This new FM transmitter is very simple and doesn't need
any RF tuning. First of all ,we have used an integrated VCO: The POS150 from
Mini-circuits. This excellent RF circuit covers all the FM Band in a voltage
range of 4V to 8V. The Kvco factor is very stable all over the FM band, ,,,,(08/08/08)
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PLL forms simple MSK demodulator - 12/17/98 Issue of EDN In
minimum-shift-keying (MSK) signaling, two frequencies that differ by the bit rate
represent a one bit and a zero bit. Normally, the frequency shift occurs at the peak
of a cycle, so that neither the amplitude nor the slope of the waveform shows a
discontinuity. We needed to transmit 300-baud ASCII text using ultrasonic transducers.
These devices have a very narrow bandwidth around their 25-kHz resonant frequency,
making MSK the obvious choice for modulation. A zero....Page includes several designs.
Scroll to find this one.... [Design Idea by JTom Napier, North Wales, PA] |
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PLL Synthesizing Oscillator 1 - (electronic circuit added 7/03) |
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PLL Synthesizing Oscillator 2 - (electronic circuit added 7/03) |
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PLL Synthesizing Oscillator 3 - (electronic circuit added 7/03) |
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PLL Tuning Module - SAA1057 Dual-speed PLL designed for wideband FM
transmitter. ….(electronic schematic added 11/08) |
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PLL Tutorial - PPL stands for 'Phase-Locked Loop' and is basically a closed
loop frequency control system, which functioning is based on the phase sensitive
detection of phase difference between the input and output signals of the controlled
oscillator (CO). You will find no formulas or other complex math within this tutorial.
I decided to keep it simple. But, before we go into any detail, first a little
bit of history of the Phase-Locked Loop and prior to that with the superheterodyne.….
[written by Tony van Roon] |
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PLL using a TA7310P - The resistor named R can be replaced by a 50 Ohm type
if the power supply is 5 Volts. The dividing ratio can be programed with IC2. For the
ratios see table 1. Example: If the input signal has a frequency of 10MHz, the crystal
frequency output is 10.240-10.000=0.24. Now looking at table 1, we see we can make 24
by combining the 8 and 16 program switches (pin 11 and pin 12 closed to Vcc). By
trimming coil T the output will lock to 10MHz. To use this PLL in the 3 meter band
(100MHz), divide the oscillator frequency by 10. Next feed this signal to pin 4 from
IC1 by a 8pF capacitor. The adjust voltage coming from IC2 pin 5 should be connected
to the oscillator's varicap by a 4k7 resistor. As described here, the PLL will make
frequency stepping of 10kHz, to change it to 5kHz apply around minus 9V to pin 4 from
IC2. When using this PLL in the 3 meter band, this will result in stepping of 50kHz
instead of 100kHz. ….(electronic schematic added 11/08) |
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PLL with IC HEF4059 - .... |
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PLL-based converter controls light source - 07/02/98 EDN-Design
Ideas....Using the circuit in Figure 1 , you can digitally control the light intensity
of a lamp. The control loop is based on a PLL, in which the VCO comprises a
light-to-frequency converter (TSL220) coupled to a light source that
derives....PDF has several circuits, please scroll to find this one.... [Design Idea
by MASSIMO GOTTARDI, ITC-IRST, TRENTO, ITALY] |
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Precautions for Disk Data Separator PLL Designs - National
Semiconductor Application Note (app note added 2/06) |
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