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. 799-0127
Mfr. Part No.DSPIC33EP512GM706-I/MR
BrandMicrochip
TWD209.00
Each
units
60MHz - - 16bit 48 kB Harvard 512 kB Flash - Surface Mount QFN 64 3 → 3.6 V 4
RS Stock No. 177-1583
Mfr. Part No.DSPIC33EP256GP502-I/SP
BrandMicrochip
TWD118.10
Each (In a Tube of 15)
units
60MHz DSPIC 70MIPS 16bit 32 kB C 256 kB Flash ALU Surface Mount SPDIP 28 3.3 V 2
RS Stock No. 177-3932
Mfr. Part No.DSPIC30F6014A-20E/PF
BrandMicrochip
TWD397.00
Each
units
120MHz DSPIC30F6014A 30MIPS 16bit 8 kB Harvard 144 kB Flash ALU Surface Mount TQFP 64 - 2
RS Stock No. 666-8321
Mfr. Part No.dsPIC33FJ128GP202-I/SO
BrandMicrochip
TWD158.00
Each
units
40MHz - - 16bit 8 kB RISC 128 kB Flash - Surface Mount SOIC W 28 3.3 V 2
RS Stock No. 823-7752
Mfr. Part No.DSPIC30F6012-30I/PF
BrandMicrochip
TWD718.00
Each
units
30MHz - - 16bit 8.192 kB RISC 144 kB Flash - Surface Mount TQFP 80 2.5 → 5.5 V 2
RS Stock No. 802-3963
Mfr. Part No.ADSP-21479KBCZ-2A
TWD683.00
Each
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. 823-4563
Mfr. Part No.DSPIC30F3014-20I/PT
BrandMicrochip
TWD159.00
Each (In a Pack of 2)
units
25MHz - - 16bit 2.048 kB RISC 24 kB Flash - Surface Mount TQFP 44 2.5 → 5.5 V 2
RS Stock No. 178-4985
Mfr. Part No.DSPIC33EV256GM102-I/MM
BrandMicrochip
TWD109.80
Each (In a Tube of 61)
units
70MIPS - 70MIPS 16bit 16 kB Code Efficient 256 kB Flash - Surface Mount QFN 28 4.5 → 5.5 V 2
RS Stock No. 623-0011
Mfr. Part No.DSPIC30F6014A-30I/PF
BrandMicrochip
TWD364.00
Each
units
30MIPS dsPIC30F 30MIPS 16bit 8.192 kB RISC 4.096 kB, 144 kB Flash - Surface Mount TQFP 80 2.5 → 5.5 V 2
RS Stock No. 666-9661
Mfr. Part No.dsPIC33FJ128MC708A-I/PT
BrandMicrochip
TWD229.00
Each
units
40MIPS - - 16bit 16 kB RISC 128 kB Flash - Surface Mount TQFP 80 3 → 3.6 V 2
RS Stock No. 709-3917
Mfr. Part No.TMS320VC5416PGE160
TWD1,566.00
Each
units
160MHz - 160MIPS 16bit 256 kB Harvard 32 kB DARAM, ROM, SARAM Fixed Point Surface Mount LQFP 144 1.6 V, 3.3 V -
RS Stock No. 666-9709
Mfr. Part No.dsPIC33FJ64GP306A-I/PT
BrandMicrochip
TWD162.00
Each
units
40MIPS - - 16bit 16 kB RISC 64 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 889-5550
Mfr. Part No.DSPIC30F4013-30I/P
BrandMicrochip
TWD196.60
Each (In a Tube of 10)
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. 178-5211
Mfr. Part No.DSPIC33EP512MC504-I/PT
BrandMicrochip
TWD119.80
Each (In a Tray of 160)
units
60MHz - - 16bit 48 kB Harvard 512 kB Flash - Surface Mount TQFP 44 3 → 3.6 V 2
RS Stock No. 823-7847
Mfr. Part No.DSPIC33FJ128MC804-E/ML
BrandMicrochip
TWD217.00
Each
units
40MHz - - 16bit 16 kB Harvard 128 kB Flash - Surface Mount QFN 44 3 → 3.6 V 2
RS Stock No. 178-4861
Mfr. Part No.DSPIC33FJ64MC802-I/SO
BrandMicrochip
TWD147.00
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. 889-5281
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. 739-3674
Mfr. Part No.DSPIC33FJ256GP510A-I/PF
BrandMicrochip
TWD230.00
Each
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. 770-7739
Mfr. Part No.dsPIC33EP128MC502-I/SO
BrandMicrochip
TWD96.00
Each
units
70MHz - - 16bit 16 kB Modified Harvard 128 kB Flash - Surface Mount SOIC 28 3 → 3.6 V 2
RS Stock No. 399-729
Mfr. Part No.DSPIC33FJ12MC201-I/P
BrandMicrochip
TWD111.40
Each (In a Pack of 5)
units
40MHz - 40MIPS 16bit 1 kB RISC 12 kB Flash - Through Hole PDIP 20 3 → 3.6 V 1