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. 177-3892
Mfr. Part No.DSPIC33FJ256MC710-I/PF
BrandMicrochip
TWD294.00
Each
units
80MHz DSPIC33FJ256MC710 40MIPS 16bit 30 kB Harvard 256 kB Flash ALU Surface Mount TQFP 100 - 2
RS Stock No. 177-3509
Mfr. Part No.DSPIC30F6014A-20E/PF
BrandMicrochip
TWD360.60
Each (In a Tray of 90)
units
120MHz DSPIC30F6014A 30MIPS 16bit 8 kB Harvard 144 kB Flash ALU Surface Mount TQFP 64 - 2
RS Stock No. 178-4848
Mfr. Part No.DSPIC33EP512MC502-I/SP
BrandMicrochip
TWD141.10
Each (In a Tube of 15)
units
5.5MHz - - 16bit 48 kB RISC 512 kB Flash - Through Hole PDIP 28 3 → 3.6 V 2
RS Stock No. 666-9683
Mfr. Part No.dsPIC33FJ256GP506A-I/PT
BrandMicrochip
TWD192.00
Each
units
40MIPS - - 16bit 16 kB RISC 256 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 162-7547
Mfr. Part No.TMS320F2808PZS
TWD551.30
Each (In a Tube of 90)
units
100MHz - 100MIPS 32bit 36 kB Harvard 128 kB Flash Fixed Point Surface Mount LQFP 100 1.8 V, 3.3 V -
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. 160-2897
Mfr. Part No.ADSP-21488KSWZ-4B
TWD680.80
Each (In a Tray of 40)
units
400MHz SHARC 400MIPS 32/64bit 3 MB Super Harvard 5 MB RAM MAC Surface Mount LQFP 176 1.1 V 1
RS Stock No. 160-0707
Mfr. Part No.ADSP-21479KBCZ-2A
TWD520.70
Each (In a Tray of 189)
units
266MHz SHARC - 32bit 5 Mbit Super Harvard 4 Mbit ROM Floating Point Surface Mount CSP BGA 196 3.3 V 1
RS Stock No. 889-5178
Mfr. Part No.dsPIC30F3013-30I/SO
BrandMicrochip
TWD119.40
Each (In a Tube of 27)
units
30MIPS dsPIC30F 30MIPS 16bit 2.048 kB RISC 1.024 kB, 24 kB Flash - Surface Mount SOIC 28 2.5 → 5.5 V 2
RS Stock No. 177-1805
Mfr. Part No.dsPIC33EP16GS502-I/SO
BrandMicrochip
TWD95.40
Each (In a Pack of 5)
units
60MHz DSPIC 70MIPS 16bit 2 kB C 16 kB Flash ALU Surface Mount SOIC 28 3.3 V 2
RS Stock No. 877-9202
Mfr. Part No.ADSP-BF534BBCZ-5B
TWD996.00
Each
units
500MHz Blackfin 500MIPS 16bit 32 kB RISC 132 kB Flash ALU Surface Mount CSP BGA 208 1.3 V, 3.3 V 2
RS Stock No. 666-8485
Mfr. Part No.dsPIC33FJ64MC802-I/MM
BrandMicrochip
TWD164.00
Each
units
40MIPS - - 16bit 16 kB RISC 64 kB Flash - Surface Mount QFN-S 28 3 → 3.6 V 2
RS Stock No. 861-0554
Mfr. Part No.dsPIC33EV256GM104-I/ML
BrandMicrochip
TWD132.00
Each
units
70MIPS - 70MIPS 16bit 16 kB Code Efficient 256 kB Flash - Surface Mount QFN 44 4.5 → 5.5 V 2
RS Stock No. 889-5887
Mfr. Part No.dsPIC33FJ256MC510A-I/PT
BrandMicrochip
TWD189.00
Each (In a Tray of 119)
units
40MIPS - - 16bit 16 kB RISC 256 kB Flash - Surface Mount TQFP 100 3 → 3.6 V 2
RS Stock No. 697-7818
Mfr. Part No.ADSP-BF533SBBCZ500
TWD992.00
Each
units
500MHz Blackfin 500MIPS 16bit - Modified Harvard - ROM, SRAM Fixed Point Surface Mount CSP BGA 160 1.2 V, 1.8 V, 2.5 V, 3.3 V -