Can You Find Affordable DSPs Capable of 16 MHz ADC and 512-Point FFT?

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SUMMARY

The discussion centers on finding affordable Digital Signal Processors (DSPs) capable of performing 16 MHz Analog-to-Digital Conversion (ADC) and executing a 512-point Fast Fourier Transform (FFT). The Microchip dsPIC series is highlighted as a viable option, featuring 32-bit signal processors with integrated 4 Msps 12-bit ADCs that can be interleaved to achieve 16 Msps, all priced under $10. Additionally, the BlackFin DSP is suggested as a cost-effective solution for processing, with a price point around $20. The conversation emphasizes the need for low-cost development systems and the potential use of existing code libraries for FFT implementation.

PREREQUISITES
  • Understanding of Digital Signal Processing (DSP) concepts
  • Familiarity with Analog-to-Digital Conversion (ADC) techniques
  • Knowledge of Fast Fourier Transform (FFT) algorithms
  • Experience with Microchip dsPIC architecture and development tools
NEXT STEPS
  • Research Microchip dsPIC signal processors and their development kits
  • Explore BlackFin DSP specifications and pricing for potential projects
  • Study FFT implementation techniques using Microchip's code libraries
  • Investigate ADC interleaving methods to achieve higher sample rates
USEFUL FOR

This discussion is beneficial for hobbyists, embedded systems developers, and engineers seeking affordable DSP solutions for real-time signal processing applications involving ADC and FFT.

Ravaner
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Hello. I've searched without any real success on the web. I'm looking for a DSP (at affordable price !) which is able to accomplish ADC fonction (at least @ 16 MHz) and FFT on at least 512 points panel. If someone can transmit some manufacturer references ... Thanks by advance.
 
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How many bits per sample? Do you have any microcontroller (uC) or other processing devices already? Do you need the FFT to be done in about real time?
 
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I assume you are looking for something under $100.
And the 16MHz is the sample rate of the ADC.

I think the problem is that nobody markets that to hobbyists because they require too much support.
There are Infineon TriCore parts that fit your bill, but the evaluation boards are $5K.

These parts are sometimes used in consumer goods - but even if you took apart an auto radar sensor, the part inside may not be reprogrammable.
 
As @berkeman suggests, your solution might be to put together a few parts: 1st an ADC, then pipe that into a $20 BlackFin DSP.
 
Thanks for replies
 
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Microchip make the dsPIC range of 32 bit signal processors. They have several 4Msps 12 bit AtoD converters in the chip that can be interleaved to get 16Msps. Processor clock speeds are up to 100MHz, with prices less than $10. Low cost development systems are available. You may need to use an FFT from their code library. I would interlace the FFT code with the AtoD.
http://www.microchip.com/paramchartsearch/chart.aspx?branchID=8097

It would help if we knew what project you were planning.
 
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