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. 861-0541
Mfr. Part No.dsPIC33EV256GM102-I/SO
BrandMicrochip
£2.79
Each
Units
70MIPS - 70MIPS 16bit 16 kB Code Efficient 256 kB Flash - Surface Mount SOIC 28 4.5 → 5.5 V 2
RS Stock No. 178-4146
Mfr. Part No.DSPIC33FJ128GP804-I/PT
BrandMicrochip
£3.554
Each (In a Tray of 160)
Units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Surface Mount TQFP 44 3.3 V 2
RS Stock No. 619-5659
Mfr. Part No.TMS320F2808PZA
£15.48
Each
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. 170-4520
Mfr. Part No.XRT6166CD-F
BrandEXAR
£9.902
Each (In a Tube of 27)
Units
2.048MHz - - 8bit - - - - - Surface Mount SOIC 28 - -
RS Stock No. 496-7345
Mfr. Part No.ADSP-BF533SBBZ500
£25.98
Each
Units
500MHz Blackfin 500MIPS 16bit - Modified Harvard - ROM, SRAM Fixed Point Surface Mount BGA 169 1.2 V, 1.8 V, 2.5 V, 3.3 V -
RS Stock No. 880-6705
Mfr. Part No.dsPIC33EV32GM102-I/SO
BrandMicrochip
£2.19
Each (In a Pack of 2)
Units
25MHz - 70MIPS 16bit 4 kB C Compiler, DSP, MCU, Modified Harvard 32 kB Flash ALU, MAC Surface Mount SOIC 28 4.5 → 5.5 V 2
RS Stock No. 823-3407
Mfr. Part No.DSPIC33EP512GP806-I/PT
BrandMicrochip
£5.82
Each
Units
60MHz - - 16bit 52 kB RISC 536 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 4
RS Stock No. 798-5226
Mfr. Part No.DSPIC33FJ64GS608-I/PT
BrandMicrochip
£4.68
Each
Units
50kHz - 50MIPS 16bit 9 kB RISC 64 kB Flash Fixed Point, Floating Point Surface Mount TQFP 80 3.3 V 2
RS Stock No. 159-9536
Mfr. Part No.ADAU1452WBCPZ
£7.762
Each (In a Tray of 168)
Units
294.912MHz SHARC 294MIPS 32bit - DSP - Flash Fixed Point Surface Mount LFCSP 72 3.3 V -
RS Stock No. 769-5655
Mfr. Part No.XRT6166CD-F
BrandEXAR
£10.89
Each
Units
2.048MHz - - 8bit - - - - - Surface Mount SOIC 28 - -
RS Stock No. 666-8346
Mfr. Part No.dsPIC33FJ128GP804-I/PT
BrandMicrochip
£4.28
Each
Units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Surface Mount TQFP 44 3.3 V 2
RS Stock No. 161-0546
Mfr. Part No.ADSP-BF533SBBZ500
£23.615
Each (In a Tray of 84)
Units
500MHz Blackfin 500MIPS 16bit - Modified Harvard - ROM, SRAM Fixed Point Surface Mount BGA 169 1.2 V, 1.8 V, 2.5 V, 3.3 V -
RS Stock No. 798-9916
Mfr. Part No.ADAU1452WBCPZ
£10.51
Each
Units
294.912MHz SHARC 294MIPS 32bit - DSP - Flash Fixed Point Surface Mount LFCSP 72 3.3 V -
RS Stock No. 102-5577
Mfr. Part No.TMS320F2808PZA
£13.504
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. 887-7202
Mfr. Part No.DSPIC30F6014A-30I/PF
BrandMicrochip
£7.791
Each (In a Tray of 90)
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. 666-9652
Mfr. Part No.dsPIC33FJ128MC706A-I/PT
BrandMicrochip
£4.85
Each
Units
40MIPS - - 16bit 16 kB RISC 128 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 666-8374
Mfr. Part No.dsPIC33FJ128MC804-I/ML
BrandMicrochip
£4.66
Each
Units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Surface Mount QFN 44 3.3 V 2
RS Stock No. 861-0539
Mfr. Part No.DSPIC30F5013-20I/PT
BrandMicrochip
£6.33
Each
Units
20MIPS dsPIC30F 30MIPS 16bit 4 kB RISC 66 kB Flash - Surface Mount TQFP 80 2.5 → 5.5 V 2
RS Stock No. 623-0011
Mfr. Part No.DSPIC30F6014A-30I/PF
BrandMicrochip
£8.58
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. 549-401
Mfr. Part No.DSPIC33FJ64GP802-I/SP
BrandMicrochip
£3.84
Each
Units
40MIPS - - 16bit 16 kB RISC 64 kB Flash - Through Hole SPDIP 28 3 → 3.6 V 2
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