Phased Locked Loop (PLL) Electronic Circuits

Phased Locked Loop (PLL) Circuits, Page 5
PLL's: #'s - A B - O P Q - Z
Last Updated on: Monday, October 26, 2009 05:02 AM

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

Rolled-Off Noise Source - This is a circuit that generates white noise, rolled-off to drive earphones or a small speaker. White noise creates is a "rushing" sound, which sounds something like air rushing by your ear(s). White noise would be flat with frequency,.... (circuit added 6/07)

Serial Interface for Truly MTC-C162DPLY-2N, 2 line X 16 char LCD display - (schematic / circuit added 6/07)

Series Connected Voltage Boost Circuit for a Battery Operated LED Lantern - A circuit that goes in series with a white LED and a 1.5 volt cell to make > 3 Volts to drive a white LED...(schematic / circuit added 6/07)

Software PLL locks VCXO to reference - 08/03/98 EDN-Design Ideas: (design idea added 2/06)

Startup Time[comma] Profile Measurement of PLL VCOs & Crystal Oscillators - National Semiconductor Application Note (app note added 2/06)

Synthesized HF Receiver - (circuit added 08/07/06)

Synthesizer Basics (Harry Lythall) - Very nice intro to synthesizers by Harry Lythall (circuit added 08/07/06)

TB042: Interfacing a KEELOQ® Encoder to a PLL Circuit - Microchip Application Note Published 19-Mar-01 (app note added 2/06)

TB078: PLL Jitter & Its Effects in the CAN Protocol - Microchip Application Note Published 15-Jun-04 (app note added 2/06)

The Phase Locked Loop IC as a Communication System Building Block - National Semiconductor Application Note (app note added 2/06)

Two Gates & a Microprocessor Form Digital PLL - 04/14/05 EDN-Design Ideas: Low-frequency PLL needs just a processor and gates.....(design idea added 2/06)

Unlocked PLL Retains Locked Frequency - 07/20/95 EDN-Design Ideas: Using the PC2 in-phase comparator output, the circuit in Fig 1 keeps the unlocked, or free-run, frequency of a 74HC4046 PLL near the locked frequency. With no signal input, the VCO output normally adjusts to its lowest frequency (one-half the locked frequency, f0). In some applications, such a large frequency excursion may be undesirable. With the addition of D1, R3, C2, R4, and the 74HC04 inverting buffer, the free-run frequency remains near the locked frequency in the absence of a signal input.....(design idea added 3/03)

Tape & Reel Dimensions - Analog Devices Application Notes (added 2/06)

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