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. 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. 912-6823
Mfr. Part No.DSPIC33FJ32MC304-I/PT
BrandMicrochip
TWD118.80
Each (In a Tray of 160)
units
40MHz - - 16bit 4 kB RISC 32 kB Flash - Surface Mount TQFP 44 3.3 V 2
RS Stock No. 809-9070
Mfr. Part No.ADSP-BF532SBBCZ400
TWD702.00
Each
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32.768kHz Blackfin 400MIPS 16bit 80 kB Harvard - ROMLess Fixed Point Surface Mount CSP BGA 160 1.2 V, 3.3 V 1
RS Stock No. 889-5887
Mfr. Part No.dsPIC33FJ256MC510A-I/PT
BrandMicrochip
TWD189.00
Each (In a Tray of 119)
units
40MIPS - - 16bit 16 kB RISC 256 kB Flash - Surface Mount TQFP 100 3 → 3.6 V 2
RS Stock No. 666-8286
Mfr. Part No.dsPIC30F3013-30I/SP
BrandMicrochip
TWD142.00
Each
units
30MIPS dsPIC30F 30MIPS 16bit 2.048 kB RISC 1.024 kB, 24 kB Flash - Through Hole SPDIP 28 2.5 → 5.5 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. 177-3517
Mfr. Part No.DSPIC33FJ256MC710A-H/PF
BrandMicrochip
TWD329.00
Each (In a Tray of 90)
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40MHz DSPIC33FJ256MC710A 20MIPS 16bit 30 kB Harvard 256 kB Flash ALU Surface Mount TQFP 100 - 2
RS Stock No. 622-9998
Mfr. Part No.DSPIC30F4013-30I/P
BrandMicrochip
TWD197.00
Each
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. 666-9683
Mfr. Part No.dsPIC33FJ256GP506A-I/PT
BrandMicrochip
TWD192.00
Each
units
40MIPS - - 16bit 16 kB RISC 256 kB Flash - Surface Mount TQFP 64 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. 183-2291
Mfr. Part No.ADSP-BF523BBCZ-5A
TWD762.90
Each (In a Tray of 90)
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533MHz ADSP-BF523 - 32bit 32 kB RISC 132 kB SRAM ALU Surface Mount BGA 208 3.3 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. 666-9655
Mfr. Part No.dsPIC33FJ128MC506A-I/PT
BrandMicrochip
TWD188.00
Each
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40MIPS dsPIC33F 40MIPS 16bit 8 kB RISC 128 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 178-4874
Mfr. Part No.DSPIC33EP64GS502-I/SO
BrandMicrochip
TWD129.40
Each (In a Tube of 27)
units
1MHz - 70MIPS 16bit 8 kB Code Efficient, MCU, Modified Harvard 64 kB EEPROM, SRAM MAC Surface Mount SOIC 28 3 → 3.6 V 2
RS Stock No. 177-1593
Mfr. Part No.DSPIC33FJ128GP802-E/MM
BrandMicrochip
TWD175.70
Each (In a Tube of 61)
units
40MHz DSPIC 40MIPS 16bit 16 kB Modified Harvard 128 kB Flash ALU Surface Mount QFN 28 3.6 V 2
RS Stock No. 869-6110
Mfr. Part No.DSPIC33EV256GM104-I/PT
BrandMicrochip
TWD128.00
Each
units
70MHz - 70MIPS 16bit 16 kB C 256 kB Flash - Surface Mount TQFP 44 4.5 → 5.5 V 2
RS Stock No. 823-3407
Mfr. Part No.DSPIC33EP512GP806-I/PT
BrandMicrochip
TWD239.00
Each
units
60MHz - - 16bit 52 kB RISC 536 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 4
RS Stock No. 869-6606
Mfr. Part No.DSPIC33FJ12GP202-I/SO
BrandMicrochip
TWD95.10
Each (In a Tube of 27)
units
40MIPS - - 16bit 1 kB RISC 12 kB Flash - Surface Mount SOIC 28 3 → 3.6 V 1
RS Stock No. 666-9649
Mfr. Part No.dsPIC33FJ128GP706A-I/PT
BrandMicrochip
TWD201.00
Each
units
40MIPS - - 16bit 16 kB RISC 128 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 178-4148
Mfr. Part No.DSPIC33FJ32GP204-I/PT
BrandMicrochip
TWD101.10
Each (In a Tray of 160)
units
40MHz - - 16bit 2 kB RISC 32 kB Flash - Surface Mount TQFP 44 3.3 V 1