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. 178-5225
Mfr. Part No.DSPIC33EP64GS506-I/PT
BrandMicrochip
TWD137.30
Each (In a Tray of 160)
units
1MHz - 70MIPS 16bit 8 kB Code Efficient, MCU, Modified Harvard 64 kB EEPROM, SRAM MAC Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 923-6845
Mfr. Part No.TMS320F2812PGFA
TWD680.60
Each (In a Tray of 40)
units
150MHz - 150MIPS 32bit 36 kB Harvard 256 kB Flash EEPROM Fixed Point Surface Mount LQFP 176 1.9 V, 3.3 V -
RS Stock No. 893-8329
Mfr. Part No.DSPIC33EP64GS506-I/PT
BrandMicrochip
TWD165.00
Each
units
1MHz - 70MIPS 16bit 8 kB Code Efficient, MCU, Modified Harvard 64 kB EEPROM, SRAM MAC Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 709-3908
Mfr. Part No.TMS320F2812PGFA
TWD820.00
Each
units
150MHz - 150MIPS 32bit 36 kB Harvard 256 kB Flash EEPROM Fixed Point Surface Mount LQFP 176 1.9 V, 3.3 V -
RS Stock No. 877-9155
Mfr. Part No.ADSP-21489KSWZ-5B
TWD791.00
Each
units
450MHz SHARC 450MIPS 32/64bit 5 MB Super Harvard 5 MB RAM MAC Surface Mount LQFP 176 1.1 V 1
RS Stock No. 160-2898
Mfr. Part No.ADSP-21489KSWZ-5B
TWD734.90
Each (In a Tray of 40)
units
450MHz SHARC 450MIPS 32/64bit 5 MB Super Harvard 5 MB RAM MAC Surface Mount LQFP 176 1.1 V 1
RS Stock No. 869-6595
Mfr. Part No.DSPIC33FJ12MC202-I/SO
BrandMicrochip
TWD94.00
Each (In a Tube of 27)
units
40MHz - 40MIPS 16bit 1 kB RISC 12 kB Flash - Through Hole PDIP 20 3 → 3.6 V 1
RS Stock No. 178-4840
Mfr. Part No.DSPIC30F2010-30I/SP
BrandMicrochip
TWD123.50
Each (In a Tube of 15)
units
30MIPS dsPIC30F 30MIPS 16bit 512 B RISC 1.024 kB, 12 kB Flash - Through Hole SPDIP 28 2.5 → 5.5 V 1
RS Stock No. 178-4152
Mfr. Part No.DSPIC33FJ16GS504-I/PT
BrandMicrochip
TWD135.90
Each (In a Tray of 160)
units
40MIPS - - 16bit 2 kB RISC 16 kB Flash - Surface Mount TQFP 44 3 → 3.6 V 1
RS Stock No. 619-5643
Mfr. Part No.TMS320LF2406APZA
TWD422.00
Each
units
40MHz - 40MIPS 16bit 5 kB Harvard 64 kB Flash EEPROM Fixed Point Surface Mount LQFP 100 3.3 V, 5 V -
RS Stock No. 162-4884
Mfr. Part No.TMS320LF2406APZA
TWD467.20
Each (In a Tray of 90)
units
40MHz - 40MIPS 16bit 5 kB Harvard 64 kB Flash EEPROM Fixed Point Surface Mount LQFP 100 3.3 V, 5 V -
RS Stock No. 666-9674
Mfr. Part No.dsPIC33FJ16GS504-I/PT
BrandMicrochip
TWD164.00
Each
units
40MIPS - - 16bit 2 kB RISC 16 kB Flash - Surface Mount TQFP 44 3 → 3.6 V 1
RS Stock No. 399-723
Mfr. Part No.DSPIC33FJ12MC202-I/SO
BrandMicrochip
TWD112.20
Each (In a Pack of 5)
units
40MIPS - - 16bit 1 kB RISC 12 kB Flash - Surface Mount SOIC 28 3 → 3.6 V 1
RS Stock No. 869-6211
Mfr. Part No.SSC7150-ML-AB0
BrandMicrochip
TWD122.50
Each (In a Pack of 2)
units
400kHz - - 32bit - - - - - Surface Mount QFN 28 3.3 V -
RS Stock No. 622-9897
Mfr. Part No.DSPIC30F2010-30I/SP
BrandMicrochip
TWD138.00
Each
units
30MIPS dsPIC30F 30MIPS 16bit 512 B RISC 1.024 kB, 12 kB Flash - Through Hole SPDIP 28 2.5 → 5.5 V 1
RS Stock No. 861-0551
Mfr. Part No.dsPIC33EV256GM106-I/PT
BrandMicrochip
TWD144.00
Each
units
70MIPS - 70MIPS 16bit 16 kB Code Efficient 256 kB Flash - Surface Mount TQFP 64 4.5 → 5.5 V 2
RS Stock No. 923-6854
Mfr. Part No.TMS320F2811PBKA
TWD642.60
Each (In a Tube of 90)
units
150MHz - 150MIPS 32bit 36 kB Harvard 256 kB Flash EEPROM Fixed Point Surface Mount LQFP 128 1.9 V, 3.3 V -
RS Stock No. 912-6968
Mfr. Part No.DSPIC30F3012-30I/SO
BrandMicrochip
TWD106.10
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. 709-3914
Mfr. Part No.TMS320F2811PBKA
TWD643.00
Each
units
150MHz - 150MIPS 32bit 36 kB Harvard 256 kB Flash EEPROM Fixed Point Surface Mount LQFP 128 1.9 V, 3.3 V -
RS Stock No. 145-6898
Mfr. Part No.TMS320VC5402PGE100
TWD325.40
Each (In a Tray of 60)
units
100MHz - 100MIPS 16bit 32 kB Modified Harvard 8 kB DARAM, ROM Fixed Point Surface Mount LQFP 144 1.8 V, 3.3 V -