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. 889-5597
Mfr. Part No.dsPIC33FJ256MC710A-I/PF
BrandMicrochip
£5.96
Each (In a Tray of 90)
Units
40MIPS dsPIC33F 40MIPS 16bit 30 kB RISC 256 kB Flash - Surface Mount TQFP 100 3 → 3.6 V 2
RS Stock No. 869-6110
Mfr. Part No.DSPIC33EV256GM104-I/PT
BrandMicrochip
£3.02
Each
Units
70MHz - 70MIPS 16bit 16 kB C 256 kB Flash - Surface Mount TQFP 44 4.5 → 5.5 V 2
RS Stock No. 178-4142
Mfr. Part No.DSPIC30F5013-20I/PT
BrandMicrochip
£5.772
Each (In a Tray of 119)
Units
20MIPS dsPIC30F 30MIPS 16bit 4 kB RISC 66 kB Flash - Surface Mount TQFP 80 2.5 → 5.5 V 2
RS Stock No. 666-9692
Mfr. Part No.dsPIC33FJ256MC710A-I/PF
BrandMicrochip
£6.49
Each
Units
40MIPS - - 16bit 30 kB RISC 256 kB Flash - Surface Mount TQFP 100 3 → 3.6 V 2
RS Stock No. 178-4151
Mfr. Part No.DSPIC33FJ128MC706A-I/PT
BrandMicrochip
£4.029
Each (In a Tray of 160)
Units
40MIPS - - 16bit 16 kB RISC 128 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 759-1862
Mfr. Part No.ADSP-21262SKSTZ200
£26.11
Each
Units
200MHz SHARC - 32 bit, 40 bit 2 (SRAM) Mbit Super Harvard 4 Mbit ROM Fixed Point, Floating Point Surface Mount LQFP 144 1.14 → 1.26 V, 3.13 → 3.47 V 6
RS Stock No. 159-7706
Mfr. Part No.ADSP-21262SKSTZ200
£23.736
Each (In a Tray of 60)
Units
200MHz SHARC - 32 bit, 40 bit 2 (SRAM) Mbit Super Harvard 4 Mbit ROM Fixed Point, Floating Point Surface Mount LQFP 144 1.14 → 1.26 V, 3.13 → 3.47 V 6
RS Stock No. 697-7785
Mfr. Part No.ADSP-2181BSZ-133
£46.63
Each
Units
33.3MHz - 33.3MIPS 16bit 80 kB Enhanced Harvard - RAM Fixed Point Surface Mount MQFP 128 5 V -
RS Stock No. 158-0581
Mfr. Part No.ADSP-2181BSZ-133
£42.393
Each (In a Tray of 24)
Units
33.3MHz - 33.3MIPS 16bit 80 kB Enhanced Harvard - RAM Fixed Point Surface Mount MQFP 128 5 V -
RS Stock No. 178-4869
Mfr. Part No.DSPIC33EP512MC202-I/SO
BrandMicrochip
£2.713
Each (In a Tube of 27)
Units
5.5MHz - - 16bit 48 kB RISC 512 kB Flash - Surface Mount SOIC 28 3 → 3.6 V 2
RS Stock No. 160-2897
Mfr. Part No.ADSP-21488KSWZ-4B
£13.558
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. 877-9151
Mfr. Part No.ADSP-21488KSWZ-4B
£13.79
Each
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. 666-8302
Mfr. Part No.dsPIC30F5013-30I/PT
BrandMicrochip
£6.61
Each
Units
30MIPS dsPIC30F 30MIPS 16bit 4.096 kB RISC 1.024 kB, 66 kB Flash - Surface Mount TQFP 80 2.5 → 5.5 V 2
RS Stock No. 697-7798
Mfr. Part No.ADSP-2185MKSTZ-300
£21.81
Each
Units
75MHz ADSP-21xx 75MIPS 16bit 80 kB Enhanced Harvard - RAM Fixed Point Surface Mount LQFP 100 2.5 V, 3.3 V -
RS Stock No. 810-3918
Mfr. Part No.DSPIC33EP512MC202-I/SO
BrandMicrochip
£2.94
Each
Units
5.5MHz - - 16bit 48 kB RISC 512 kB Flash - Surface Mount SOIC 28 3 → 3.6 V 2
RS Stock No. 802-3997
Mfr. Part No.ADSP-BF592KCPZ-2
£4.315
Each (In a Pack of 2)
Units
200MHz Blackfin - 32bit 32 kB Modified Harvard 64 kB ROM MAC Surface Mount LFCSP 64 1.8 V, 2.5 V, 3.3 V 1
RS Stock No. 178-5218
Mfr. Part No.DSPIC33EP128GM706-I/PT
BrandMicrochip
£3.673
Each (In a Tray of 160)
Units
70MIPS dsPIC33EP 70MIPS 16bit 16 kB C Compiler, DSP, MCU, Modified Harvard 128 kB Flash Fixed Point, Floating Point Surface Mount TQFP 64 3 → 3.6 V 4
RS Stock No. 160-0712
Mfr. Part No.ADSP-BF592KCPZ-2
£2.866
Each (In a Tray of 260)
Units
200MHz Blackfin - 32bit 32 kB Modified Harvard 64 kB ROM MAC Surface Mount LFCSP 64 1.8 V, 2.5 V, 3.3 V 1
RS Stock No. 158-0582
Mfr. Part No.ADSP-2185MKSTZ-300
£19.829
Each (In a Tray of 90)
Units
75MHz ADSP-21xx 75MIPS 16bit 80 kB Enhanced Harvard - RAM Fixed Point Surface Mount LQFP 100 2.5 V, 3.3 V -
RS Stock No. 889-5714
Mfr. Part No.dsPIC30F5013-30I/PT
BrandMicrochip
£6.039
Each (In a Tray of 119)
Units
30MIPS dsPIC30F 30MIPS 16bit 4.096 kB RISC 1.024 kB, 66 kB Flash - Surface Mount TQFP 80 2.5 → 5.5 V 2
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