Digital Signal Processors

Digital signal processors (DSPs) take signals like voice, audio or video and then manipulate them. They capture the signals as digital information, process it and then feed the information back for use. They do this either digitally or in an analogue format by going through an Audio Digital-to-Analogue Converter (DAC). All of this happens at very high speeds.


What are digital signal processors used for?

Digital signal processors are used for processing audio, video and graphics. They can make sound clearer, data faster and images sharper. For example, when used in Hi-Fi equipment, DSPs can create the illusion of three dimensional sound. 


Because they're programmable, DSPs can be used in a wide variety of applications, from mobile phones to computers and toys. They're compact in size and don't use a lot of power. 


Choosing the right digital signal processor

When you're looking for the right DSP there are various features to consider: 

  • Frequency – the number of data points per second, which you can think of as the speed. 
  • RAM size – usually the greater the size, the better the performance. 
  • Program memory – to customise a DSP for a specific purpose.

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70MHz - 70MIPS 16bit 16 kB C 256 kB Flash - Surface Mount TQFP 44 4.5 → 5.5 V 2
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40MIPS - - 16bit 30 kB RISC 256 kB Flash - Surface Mount TQFP 100 3 → 3.6 V 2
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40MHz - - 16bit 16 kB Harvard 128 kB Flash - Surface Mount TQFP 44 3 → 3.6 V 2
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Tillv. art.nrDSPIC30F2010-30I/SP
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30MIPS dsPIC30F 30MIPS 16bit 512 B RISC 1.024 kB, 12 kB Flash - Through Hole SPDIP 28 2.5 → 5.5 V 1
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30MIPS dsPIC30F 30MIPS 16bit 512 B RISC 1.024 kB, 12 kB Flash - Through Hole SPDIP 28 2.5 → 5.5 V 1
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25MHz - - 16bit 6.144 kB RISC 132 kB Flash - Surface Mount TQFP 64 2.5 → 5.5 V 2
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50MIPS - - 16bit 2 kB RISC 16 kB Flash - Surface Mount SOIC 28 3 → 3.6 V 1
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70MHz DSPIC33EP256MC204 70MIPS 16bit 32 kB Harvard 256 kB Flash ALU Surface Mount TQFP 44 - 2
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60MHz dsPIC33EP 70MIPS 16bit 8 kB DSP 128 kB Flash MAC Surface Mount QFN-S 28 3 → 3.6 V 2
RS-artikelnummer 666-8431
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40MHz - - 16bit 4 kB RISC 32 kB Flash - Surface Mount SOIC W 28 3.3 V 1
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60MHz - - 16bit 48 kB Harvard 512 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 4
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60MHz dsPIC33EP 70MIPS 16bit 8 kB DSP 128 kB Flash MAC Surface Mount TQFP 48 3 → 3.6 V 2
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70MHz - - 16bit 16 kB Modified Harvard 128 kB Flash - Surface Mount SOIC 28 3 → 3.6 V 2
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40MIPS - - 16bit 16 kB RISC 256 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
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Tillv. art.nrDSPIC30F5013-20I/PT
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20MIPS dsPIC30F 30MIPS 16bit 4 kB RISC 66 kB Flash - Surface Mount TQFP 80 2.5 → 5.5 V 2
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60MHz DSPIC 70MIPS 16bit 4 kB C 32 kB Flash ALU Surface Mount SSOP 28 3.3 V 2
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70MHz - - 16bit 16 kB Modified Harvard 128 kB Flash - Surface Mount TQFP 44 3 → 3.6 V 2
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60MHz DSPIC 70MIPS 16bit 32 kB C 256 kB Flash ALU Surface Mount SPDIP 28 3.3 V 2
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60MHz - - 16bit 28 kB RISC 280 kB Flash - Surface Mount TQFP 100 3 → 3.6 V 4