PLLXplore 1

The PLLXplore 1 board brings an entire world of PLL experimentation into a single, convenient PMOD module. Built around fully digital PLL concepts, it allows you to implement everything from a basic integer‑N PLL to advanced fractional‑N architectures with Delta‑Sigma frequency synthesis.

Start with our introductory HDL example to build a synchronous phase‑frequency detector, then expand and customize it however you like—even all the way to an asynchronous time‑to‑digital‑converter‑based fractional‑N PLL. You’re free to design your own control structures, explore new architectures, and push the boundaries of what a digital PLL can do.

PLLXplore 1 is great for absolute beginners all the way to experimenting professionals. With PLLXplore 1, your only limit is your imagination.

Features

• 1 to 40MHz VCO 1-10 or 5-50 MHz      pin selectable
• 1MHz output 5th order Delta Sigma DAC, -55dB SFDR 1MHz
• Exploratory Bandgap Circuit W/ test signal generator
• 70pS RMS Jitter at 50MHz
• 3.3V Single Supply from PMOD
• 20KHz PLL loop filter 

Applications

• digital PLL
• Fractional N PLL/Delta Sigma fractional Control
• Up to 1MHz Delta Sigma Signal Generator
• LF MF and HF band HAM frequency synthesizer
• Dither techniques
• PLL control loop development