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. 666-8368
Mfr. Part No.dsPIC33FJ128MC802-I/SO
BrandMicrochip
TWD175.00
Each
units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Surface Mount SOIC W 28 3.3 V 2
RS Stock No. 160-2920
Mfr. Part No.ADSP-BF592KCPZ
TWD218.30
Each (In a Tray of 260)
units
400MHz Blackfin 400MIPS - 32 kB RISC - - ALU Surface Mount LFCSP 64 1.8 V, 2.5 V, 3.3 V 1
RS Stock No. 666-8292
Mfr. Part No.dsPIC30F4011-30I/PT
BrandMicrochip
TWD197.00
Each
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. 622-9954
Mfr. Part No.DSPIC30F4011-30I/P
BrandMicrochip
TWD195.00
Each
units
30MIPS dsPIC30F 30MIPS 16bit 2.048 kB RISC 1.024 kB, 48 kB Flash - Through Hole PDIP 40 2.5 → 5.5 V 2
RS Stock No. 399-757
Mfr. Part No.DSPIC33FJ32MC202-I/SP
BrandMicrochip
TWD127.00
Each
units
40MIPS - - 16bit 2 kB RISC 32 kB Flash - Through Hole SPDIP 28 3 to 3.6 V 1
RS Stock No. 869-6621
Mfr. Part No.DSPIC33FJ32MC202-I/SP
BrandMicrochip
TWD123.00
Each (In a Tube of 15)
units
40MIPS dsPIC33F 40MIPS 16bit 8 kB RISC 64 kB Flash - Surface Mount TQFP 100 3 → 3.6 V 2
RS Stock No. 912-6968
Mfr. Part No.DSPIC30F3012-30I/SO
BrandMicrochip
TWD119.40
Each (In a Tube of 42)
units
30MIPS - - 16bit 2.048 kB RISC 1.024 kB, 24 kB Flash - Surface Mount SOIC 18 2.5 → 5.5 V 1
RS Stock No. 178-4859
Mfr. Part No.DSPIC33FJ128MC802-I/SO
BrandMicrochip
TWD160.40
Each (In a Tube of 27)
units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Surface Mount SOIC W 28 3.3 V 2
RS Stock No. 102-5577
Mfr. Part No.TMS320F2808PZA
TWD579.30
Each (In a Tray 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. 178-5215
Mfr. Part No.DSPIC33EV256GM106-I/PT
BrandMicrochip
TWD110.80
Each (In a Tray of 160)
units
70MIPS - 70MIPS 16bit 16 kB Code Efficient 256 kB Flash - Surface Mount TQFP 64 4.5 → 5.5 V 2
RS Stock No. 823-3425
Mfr. Part No.DSPIC33FJ128MC804-E/PT
BrandMicrochip
TWD213.00
Each
units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Surface Mount TQFP 44 3 → 3.6 V 2
RS Stock No. 177-3910
Mfr. Part No.DSPIC30F4011-20I/PT
BrandMicrochip
TWD190.50
Each (In a Pack of 2)
units
120MHz DSPIC30F4011 30MIPS 16bit 2 kB Harvard 48 kB Flash ALU Surface Mount TQFP 44 - 2
RS Stock No. 666-8463
Mfr. Part No.dsPIC33FJ64GP804-I/PT
BrandMicrochip
TWD167.00
Each
units
40MHz - - 16bit 16 kB RISC 64 kB Flash - Surface Mount TQFP 44 3.3 V 2
RS Stock No. 134-5614
Mfr. Part No.dsPIC33EP128GS702-I/MM
BrandMicrochip
TWD159.00
Each
units
60MHz dsPIC33EP 70MIPS 16bit 8 kB DSP 128 kB Flash MAC Surface Mount QFN-S 28 3 → 3.6 V 2
RS Stock No. 823-7819
Mfr. Part No.DSPIC33EP32MC204-I/PT
BrandMicrochip
TWD59.20
Each (In a Pack of 5)
units
70MHz - - 16bit 4 kB Code Efficient 32 kB Flash - Surface Mount TQFP 44 3 → 3.6 V 2
RS Stock No. 177-3515
Mfr. Part No.DSPIC33FJ16GS504-E/PT
BrandMicrochip
TWD142.70
Each (In a Tray of 160)
units
40MHz DSPIC33FJ16GS504 40MIPS 16bit 2 kB Harvard 16 kB Flash ALU Surface Mount TQFP 44 - 1
RS Stock No. 178-4893
Mfr. Part No.DSPIC33EV256GM106-I/MR
BrandMicrochip
TWD136.50
Each (In a Tube of 40)
units
70MIPS - 70MIPS 16bit 16 kB Code Efficient 256 kB Flash - Surface Mount QFN 64 4.5 → 5.5 V 2
RS Stock No. 134-5586
Mfr. Part No.dsPIC33EP128GS804-I/PT
BrandMicrochip
TWD143.70
Each (In a Tray of 160)
units
60MHz dsPIC33EP 70MIPS 16bit 8 kB DSP 128 kB Flash MAC Surface Mount TQFP 44 3 → 3.6 V 2
RS Stock No. 818-4711
Mfr. Part No.TMS320C5505AZCH12
TWD338.00
Each
units
150MHz - - 16bit 64 kB DSP 320 kB EPROM, Flash, ROM Fixed Point Surface Mount NFBGA 196 1.8 V, 2.5 V, 2.8 V, 3.3 V 1
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