News & Articles

Get started learning to build your own electronics by following our FREE online courses below!
Learn More »



Build Like A Pyro!
Find many of the parts used on this site at our favorite online electronics shop
Take Me To The Gadgetory!
dsPIC based Spectrum Analyzer

Posted January 14, 2012 by Chris

“The dsPIC runs on the internal oscillator of 7.37MHz, which is then raised close to 30MHz using the PLL. This enables the board to run without external oscillators and associated loading capacitors. The signal to be analyzed is passed through a high impedance resistor (1Mohms) and then amplified by opamp (TL084). This is done to avoid any high voltage damaging the dsPIC or associated circuit. DC offset is added to the signal to enable it to be measured by ADC (0V to 5V).”

2 Responses to “dsPIC based Spectrum Analyzer”

  1. Michael Says:

    Cool project! I just got a sample dsPIC33F and am gearing up to start playing with these. This would be a great project to try once I get a little more familiar with the toolchain and such…

  2. Chris Says:

    There’s a ton of DSP libraries available for the dsPIC series. This article gives some pointers for how you can use them. Good luck!

Leave a Reply