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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) |
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Basic PLL Filters for the RFPIC™ rfHCS - Microchip Application
Note Published 18-Jul-02 (app note added 2/06) |
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BH1417 PLL Stereo Transmitter - This is the latest BH1417 FM
Transmitter design from RHOM that includes a lot of features in one small
package. It comes with pre-emphasis, limiter, stereo encoder, low pass
filter, PLL rock solid frequency transmission and RF output buffer.
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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) |
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Capacitance meter uses PLL for high accuracy - 8-Oct-09 Issue of EDN
An improvement on an old design lets you measure capacitors from 10 pF to 1 µF....
[Design Idea by Jim McLucas, Broomfield, CO] |
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Clock Recovery PLL Fits into Single PLD - 11/23/95 EDN-Design Ideas.... EDN
is migrating links. This link is not verified. Search the "title" + "EDN" for new
link. |
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CMOS RF PLL Sythesizer - Electroinic circuit design…. [from Harry Lythall's
website] |
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CMOS RF Synthesizer - Synthesizer based on available CD4059. CD4046 and
CD4060 ICs…. [from Harry Lythall's website] |
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DC Accurate Filter Eases PLL Design - DN7 Design Notes (Linear
Technology) (app note added 1/06) |
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Digital PLL Synthesis - National Semiconductor Application Note 04-Nov-1995
(app note added 4/02) |
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Fast Locking Scheme for PLL Frequency Synrhesizers - National Semiconductor
Application Note (app note added 2/06) |
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FM Synthesizer N°1 - 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…. [Michel P Web site] |
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Frequency Synthesizer - (electronic schematic / circuit added 4/02)
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Improved CMOS RF PLL Sythesizer - Electroinic circuit design…. [from Harry
Lythall's website] |
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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) … [from Harry Lythall's
website] |
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Interfacing a KEELOQ® Encoder to a PLL Circuit - Microchip Application Note
Published 19-Mar-01 (app note added 2/06) |
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Introduction to Single Chip Microwave PLL's - National Semiconductor
Application Note (app note added 2/06) |
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Loading PLL Frequency Synthesizers with COP8SAx7 - National Semiconductor
Application Note (app note added 2/06) |
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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.... EDN is migrating links. This link is not verified. Search the
"title" + EDN for new link |
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Low-cost RF synthesizer uses generic ICs - 24-Jun-10 Issue of EDN You
can design a hardware-based frequency synthesizer with one inexpensive IC and a few
passive components. Such synthesizer chips are not always available, however, because
they are typically single-sourced and are not in stock with parts distributors. The
need for a working circuit in a short time and using common parts prompted the
creation of the circuit in this Design Idea. The synthesizer covers the US commercial
AM (amplitude-modulation) broadcast band. It tunes in 10-kHz steps from 500 to 1800
kHz, but you can scale the frequencies for other applications.... [Design Idea by
James B Wood, Inovonics Inc, Felton, CA] |
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LTC1436-PLL Low Noise Switching Regulator Helps Control EMI - DN141
Design Notes (Linear Technology) (app note added 1/06) |
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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.… [Michel P
Web site] |
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Multicarrier WCDMA Feasibility - AN-807)-Analog Device Application
Notes....[App Note] |
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New Phase Locked Loops - National Semiconductor Application Note 04-Nov-1995
(app note added 4/02) Have advantages as frequency to voltage converters & more
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Noise Floor Measurement of PLL Frequency Synthesizers - National
Semiconductor Application Note (app note added 2/06) |
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Optimizing for Low Skew & Phase Error on PLL Based Clock Generators -
National Semiconductor Application Note (app note added 2/06) |
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Optimizing VCO/PLL Evaluations & PLL Synthesizer Designs - AN-95-006
Application Note MiniCircuits.com (app note added 04/05/06) |
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