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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Description Price Maximum Frequency Series Device Million Instructions per Second Data Bus Width RAM Size Instruction Set Architecture Program Memory Size Program Memory Type Numeric and Arithmetic Format Mounting Type Package Type Pin Count Typical Operating Supply Voltage Number of UART Channels
RS Stock No. 912-6867
Mfr. Part No.DSPIC33FJ64GP802-I/SO
BrandMicrochip
TWD143.40
Each (In a Tube of 27)
units
40MHz - - 16bit 16 kB RISC 64 kB Flash - Surface Mount SOIC W 28 3.3 V 2
RS Stock No. 889-5714
Mfr. Part No.dsPIC30F5013-30I/PT
BrandMicrochip
TWD246.20
Each (In a Tray of 119)
units
30MIPS dsPIC30F 30MIPS 16bit 4.096 kB RISC 1.024 kB, 66 kB Flash - Surface Mount TQFP 80 2.5 → 5.5 V 2
RS Stock No. 666-8371
Mfr. Part No.dsPIC33FJ128MC802-I/SP
BrandMicrochip
TWD203.00
Each
units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Through Hole SPDIP 28 3.3 V 2
RS Stock No. 666-9670
Mfr. Part No.dsPIC33FJ16GS502-I/SP
BrandMicrochip
TWD153.00
Each
units
50MIPS - - 16bit 2 kB RISC 16 kB Flash - Surface Mount SPDIP 28 3 → 3.6 V 1
RS Stock No. 880-2696
Mfr. Part No.DSPIC33EP128GM706-I/PT
BrandMicrochip
TWD188.00
Each
units
70MIPS dsPIC33EP 70MIPS 16bit 16 kB C Compiler, DSP, MCU, Modified Harvard 128 kB Flash Fixed Point, Floating Point Surface Mount TQFP 64 3 → 3.6 V 4
RS Stock No. 823-3403
Mfr. Part No.dsPIC33EP256MU810-I/PF
BrandMicrochip
TWD267.00
Each
units
60MHz - - 16bit 28 kB RISC 280 kB Flash - Surface Mount TQFP 100 3 → 3.6 V 4
RS Stock No. 666-8312
Mfr. Part No.dsPIC33FJ128GP202-I/MM
BrandMicrochip
TWD162.00
Each
units
40MHz - - 16bit 8 kB RISC 128 kB Flash - Surface Mount QFN S 28 3.3 V 2
RS Stock No. 178-4860
Mfr. Part No.DSPIC33FJ32MC302-I/SO
BrandMicrochip
TWD120.40
Each (In a Tube of 27)
units
40MHz - - 16bit 4 kB RISC 32 kB Flash - Surface Mount SOIC W 28 3.3 V 1
RS Stock No. 869-6606
Mfr. Part No.DSPIC33FJ12GP202-I/SO
BrandMicrochip
TWD95.10
Each (In a Tube of 27)
units
40MIPS - - 16bit 1 kB RISC 12 kB Flash - Surface Mount SOIC 28 3 → 3.6 V 1
RS Stock No. 666-8378
Mfr. Part No.dsPIC33FJ128MC804-I/PT
BrandMicrochip
TWD194.00
Each
units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Surface Mount TQFP 44 3.3 V 2
RS Stock No. 178-4844
Mfr. Part No.DSPIC33FJ16GS502-I/SP
BrandMicrochip
TWD145.40
Each (In a Tube of 15)
units
50MIPS - - 16bit 2 kB RISC 16 kB Flash - Surface Mount SPDIP 28 3 → 3.6 V 1
RS Stock No. 889-5281
Mfr. Part No.dsPIC30F4013-30I/PT
BrandMicrochip
TWD162.90
Each (In a Tray of 160)
units
30MIPS dsPIC30F 30MIPS 16bit 2.048 kB RISC 1.024 kB, 48 kB Flash - Surface Mount TQFP 44 2.5 → 5.5 V 2
RS Stock No. 697-7798
Mfr. Part No.ADSP-2185MKSTZ-300
TWD983.00
Each
units
75MHz ADSP-21xx 75MIPS 16bit 80 kB Enhanced Harvard - RAM Fixed Point Surface Mount LQFP 100 2.5 V, 3.3 V -
RS Stock No. 178-5012
Mfr. Part No.DSPIC33FJ256GP510A-I/PF
BrandMicrochip
TWD210.30
Each (In a Tray of 90)
units
40MHz - 40MIPS 16bit 16 kB Harvard 256 kB Flash Fixed Point, Floating Point Surface Mount TQFP 100 3.3 V 2
RS Stock No. 869-6110
Mfr. Part No.DSPIC33EV256GM104-I/PT
BrandMicrochip
TWD132.00
Each
units
70MHz - 70MIPS 16bit 16 kB C 256 kB Flash - Surface Mount TQFP 44 4.5 → 5.5 V 2
RS Stock No. 823-7840
Mfr. Part No.DSPIC33FJ128GP706A-E/PT
BrandMicrochip
TWD222.00
Each
units
40MHz - - 16bit 16 kB Code Efficient 128 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 177-3801
Mfr. Part No.DSPIC33EP512MU814-E/PH
BrandMicrochip
TWD341.00
Each
units
60MHz DSPIC33EP512MU814 60MIPS 16bit 52 kB Harvard 536 kB Flash ALU Surface Mount TQFP 144 - 4
RS Stock No. 869-6599
Mfr. Part No.DSPIC33FJ12MC202-I/SP
BrandMicrochip
TWD119.10
Each (In a Tube of 15)
units
40MHz - 40MIPS 16bit 1 kB RISC 12 kB Flash - Through Hole SPDIP 28 3 → 3.6 V 1
RS Stock No. 666-8343
Mfr. Part No.dsPIC33FJ128GP804-I/ML
BrandMicrochip
TWD185.00
Each
units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Surface Mount QFN 44 3.3 V 2
RS Stock No. 889-5279
Mfr. Part No.dsPIC33FJ128GP706A-I/PT
BrandMicrochip
TWD167.00
Each (In a Tray of 160)
units
40MIPS - - 16bit 16 kB RISC 128 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2