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. 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. 622-9960
Mfr. Part No.DSPIC30F4012-30I/SO
BrandMicrochip
TWD176.00
Each
units
30MIPS dsPIC30F 30MIPS 16bit 2.048 kB RISC 1.024 kB, 48 kB Flash - Surface Mount SOIC 28 2.5 → 5.5 V 1
RS Stock No. 770-7723
Mfr. Part No.dsPIC33EP128GP504-I/PT
BrandMicrochip
TWD106.00
Each
units
70MHz - - 16bit 16 kB Modified Harvard 128 kB Flash - Surface Mount TQFP 44 3 → 3.6 V 2
RS Stock No. 177-3783
Mfr. Part No.DSPIC33EP256MC204-I/PT
BrandMicrochip
TWD111.50
Each (In a Pack of 2)
units
70MHz DSPIC33EP256MC204 70MIPS 16bit 32 kB Harvard 256 kB Flash ALU Surface Mount TQFP 44 - 2
RS Stock No. 177-3517
Mfr. Part No.DSPIC33FJ256MC710A-H/PF
BrandMicrochip
TWD329.00
Each (In a Tray of 90)
units
40MHz DSPIC33FJ256MC710A 20MIPS 16bit 30 kB Harvard 256 kB Flash ALU Surface Mount TQFP 100 - 2
RS Stock No. 869-6637
Mfr. Part No.DSPIC33FJ32MC204-I/PT
BrandMicrochip
TWD101.40
Each (In a Tray of 160)
units
40MIPS - - 16bit 32 kB RISC 256 kB Flash - Surface Mount TQFP 44 3 → 3.6 V 1
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. 759-0465
Mfr. Part No.ADSP-21261SKSTZ150
TWD487.00
Each
units
150MHz SHARC - 32 bit, 40 bit 1 (SRAM) Mbit Super Harvard 3 Mbit ROM Fixed Point, Floating Point Surface Mount LQFP 144 1.14 → 1.26 V, 3.13 → 3.47 V 4
RS Stock No. 160-9884
Mfr. Part No.ADSP-BF707BBCZ-4
TWD544.90
Each (In a Tray of 189)
units
400MHz Blackfin - 16/32bit 1.024 MB Modified Harvard 512 kB ROM ALU Surface Mount CSP BGA 184 1.8 V, 3.3 V 2
RS Stock No. 802-3963
Mfr. Part No.ADSP-21479KBCZ-2A
TWD668.00
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. 158-0582
Mfr. Part No.ADSP-2185MKSTZ-300
TWD816.30
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. 134-5587
Mfr. Part No.dsPIC33EP128GS805-I/PT
BrandMicrochip
TWD143.70
Each (In a Tray of 250)
units
60MHz dsPIC33EP 70MIPS 16bit 8 kB DSP 128 kB Flash MAC Surface Mount TQFP 48 3 → 3.6 V 2
RS Stock No. 666-8374
Mfr. Part No.dsPIC33FJ128MC804-I/ML
BrandMicrochip
TWD198.00
Each
units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Surface Mount QFN 44 3.3 V 2
RS Stock No. 893-8322
Mfr. Part No.DSPIC33EP64GS504-I/PT
BrandMicrochip
TWD149.50
Each (In a Pack of 2)
units
1MHz - 70MIPS 16bit 8 kB Code Efficient, MCU, Modified Harvard 64 kB EEPROM, SRAM MAC Surface Mount TQFP 44 3 → 3.6 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. 823-7761
Mfr. Part No.DSPIC30F6012A-20E/PT
BrandMicrochip
TWD352.00
Each
units
20MHz - - 16bit 8.192 kB RISC 144 kB Flash - Surface Mount TQFP 64 3 → 5.5 V 2
RS Stock No. 177-1580
Mfr. Part No.DSPIC33EP128GP502-I/SP
BrandMicrochip
TWD102.50
Each (In a Tube of 15)
units
60MHz DSPIC 70MIPS 16bit 16 kB C 128 kB Flash ALU Surface Mount SPDIP 28 3.3 V 2
RS Stock No. 666-9699
Mfr. Part No.dsPIC33FJ256MC510A-I/PT
BrandMicrochip
TWD239.00
Each
units
40MIPS - - 16bit 16 kB RISC 256 kB Flash - Surface Mount TQFP 100 3 → 3.6 V 2
RS Stock No. 399-830
Mfr. Part No.DSPIC33FJ128MC706-I/PT
BrandMicrochip
TWD219.00
Each
units
40MHz - - 16bit 16 kB Modified Harvard 128 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 177-3764
Mfr. Part No.DSPIC33EP256GP504-I/PT
BrandMicrochip
TWD121.00
Each (In a Pack of 2)
units
70MHz DSPIC33EP256GP504 70MIPS 16bit 32 kB Harvard 256 kB Flash ALU Surface Mount TQFP 44 - 2