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. 160-0708
Mfr. Part No.ADSP-21479BSWZ-2A
TWD630.90
Each (In a Tray of 90)
units
266MHz SHARC - 32bit 5 Mbit Super Harvard 4 Mbit ROM Floating Point Surface Mount LQFP 100 3.3 V 1
RS Stock No. 178-4867
Mfr. Part No.DSPIC33EP128MC502-I/SO
BrandMicrochip
TWD88.20
Each (In a Tube of 27)
units
70MHz - - 16bit 16 kB Modified Harvard 128 kB Flash - Surface Mount SOIC 28 3 → 3.6 V 2
RS Stock No. 880-6711
Mfr. Part No.dsPIC33EV32GM106-I/PT
BrandMicrochip
TWD112.00
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 TQFP 64 4.5 → 5.5 V 2
RS Stock No. 177-1833
Mfr. Part No.DSPIC33EP256GP504-I/ML
BrandMicrochip
TWD125.00
Each (In a Pack of 2)
units
60MHz DSPIC 70MIPS 16bit 32 kB C 256 kB Flash ALU Surface Mount QFN 44 3.3 V 2
RS Stock No. 496-7345
Mfr. Part No.ADSP-BF533SBBZ500
TWD1,133.00
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. 666-9696
Mfr. Part No.dsPIC33FJ256MC710A-I/PT
BrandMicrochip
TWD260.00
Each
units
40MIPS - - 16bit 30 kB RISC 256 kB Flash - Surface Mount TQFP 100 3 → 3.6 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. 183-2292
Mfr. Part No.ADSP-BF561SBBZ600
TWD1,633.50
Each (In a Tray of 40)
units
600MHz ADSP-BF561 - 16bit 32 kB RISC 328 kB SRAM ALU Surface Mount PBGA 297 3.3 V 1
RS Stock No. 178-4871
Mfr. Part No.DSPIC33EV32GM102-I/SO
BrandMicrochip
TWD82.40
Each (In a Tube of 27)
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. 160-4510
Mfr. Part No.ADSP-21065LCSZ-240
TWD2,313.90
Each (In a Tray of 24)
units
60MHz SHARC 60MIPS 32bit 544 kB Harvard - ROMLess Floating Point Surface Mount MQFP 208 3.13 → 3.6 V -
RS Stock No. 818-4765
Mfr. Part No.TMS320C6713BGDP300
TWD1,582.00
Each
units
300MHz - 2400MIPS 32bit 64 kB DSP 264 kB EPROM Floating Point Surface Mount BGA 272 3.3 V -
RS Stock No. 158-1842
Mfr. Part No.ADSP-BF537BBCZ-5B
TWD948.90
Each (In a Tray of 90)
units
500MHz Blackfin 500MIPS 16bit 32 kB Modified Harvard - ROM, SRAM Fixed Point Surface Mount CSP BGA 208 1.2 V, 2.5 V, 3.3 V -
RS Stock No. 810-3918
Mfr. Part No.DSPIC33EP512MC202-I/SO
BrandMicrochip
TWD125.00
Each
units
5.5MHz - - 16bit 48 kB RISC 512 kB Flash - Surface Mount SOIC 28 3 → 3.6 V 2
RS Stock No. 178-5012
Mfr. Part No.DSPIC33FJ256GP510A-I/PF
BrandMicrochip
TWD210.30
Each (In a Tray of 90)
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. 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. 912-6845
Mfr. Part No.DSPIC33FJ64MC204-I/PT
BrandMicrochip
TWD128.80
Each (In a Tray of 160)
units
40MHz - - 16bit 8 kB RISC 64 kB Flash - Surface Mount TQFP 44 3.3 V 2
RS Stock No. 819-5392
Mfr. Part No.DSPIC30F6011A-30I/PT
BrandMicrochip
TWD262.20
Each (In a Pack of 160)
units
25MHz - - 16bit 6.144 kB RISC 132 kB Flash - Surface Mount TQFP 64 2.5 → 5.5 V 2
RS Stock No. 876-6755
Mfr. Part No.DSPIC33FJ128MC706-I/PT
BrandMicrochip
TWD193.60
Each (In a Tray of 160)
units
40MHz - - 16bit 16 kB Modified Harvard 128 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 912-6381
Mfr. Part No.ADSP-2191MKSTZ-160
TWD1,252.30
Each (In a Tray of 60)
units
160MHz ADSP-21xx 160MIPS 16bit 160 kB - - SRAM - Surface Mount LQFP 144 2.5 V, 3.3 V -
RS Stock No. 183-2206
Mfr. Part No.ADAU1445YSVZ-3A
TWD593.00
Each
units
172MHz ADAU1445 3584 28 bit, 56 bit 8 k - - EEPROM MAC Surface Mount TQFP_EP 100 1.8 V, 3.3 V -