Two gates and a microprocessor form digital PLL


Posted on Jan 28, 2013

You can use Microchip`s low-cost PIC16F818 microprocessor and a pair of gates to construct a digital PLL that can clean noisy digital signals over a range of 4 to 40 kHz. Featuring programmable lock range, phase differential, and loop gain, the digital-PLL engine and lock detector can extract clock and data information from noisy, short-range radio signals (Figure 1). When you construct it using a QFN-packaged microprocessor and discrete single-gate logic devices, the circuit occupies a pc-board area that`s approximately as large as an aspirin.






Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    51 surround amplifier circuit schematic
    Groovewatt a DIY Vacuum Tube (Valve) RIAA Phono Preamplifier Project
    BTL Mono Amplifier With DC Volume Control Circuit
    lt3755 sealed lead acid battery charger
    clock
    hacking rfid for fun
    use CD-ROM drive as stand-alone audio CD player
    Bike Guard Alarm Circuit
    RFID Readers for the HDX Protocol
    Flyback converter circuit Clamp
    A volt DC power supply circuit
    Having a differential amplifier and overcurrent protection for power supply circuit 2



    Top