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. 889-5887
Mfr. Part No.dsPIC33FJ256MC510A-I/PT
BrandMicrochip
TWD193.90
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. 134-5585
Mfr. Part No.dsPIC33EP128GS804-I/ML
BrandMicrochip
TWD145.40
Each (In a Tube of 45)
units
60MHz dsPIC33EP 70MIPS 16bit 8 kB DSP 128 kB Flash MAC Surface Mount QFN 44 3 → 3.6 V 2
RS Stock No. 666-8463
Mfr. Part No.dsPIC33FJ64GP804-I/PT
BrandMicrochip
TWD176.00
Each
units
40MHz - - 16bit 16 kB RISC 64 kB Flash - Surface Mount TQFP 44 3.3 V 2
RS Stock No. 178-4860
Mfr. Part No.DSPIC33FJ32MC302-I/SO
BrandMicrochip
TWD126.10
Each (In a Tube of 27)
units
40MHz - - 16bit 4 kB RISC 32 kB Flash - Surface Mount SOIC W 28 3.3 V 1
RS Stock No. 823-3422
Mfr. Part No.DSPIC33FJ128GP802-I/MM
BrandMicrochip
TWD182.50
Each (In a Pack of 2)
units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Surface Mount QFN-S 28 3 → 3.6 V 2
RS Stock No. 666-8453
Mfr. Part No.dsPIC33FJ64GP204-I/PT
BrandMicrochip
TWD158.00
Each
units
40MHz - - 16bit 8 kB RISC 64 kB Flash - Surface Mount TQFP 44 3.3 V 2
RS Stock No. 178-4148
Mfr. Part No.DSPIC33FJ32GP204-I/PT
BrandMicrochip
TWD106.10
Each (In a Tray of 160)
units
40MHz - - 16bit 2 kB RISC 32 kB Flash - Surface Mount TQFP 44 3.3 V 1
RS Stock No. 177-1833
Mfr. Part No.DSPIC33EP256GP504-I/ML
BrandMicrochip
TWD131.00
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. 761-7267
Mfr. Part No.dsPIC33EP64MC506-I/PT
BrandMicrochip
TWD111.00
Each
units
70MIPS - - 16bit 8 kB Harvard 64 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 818-4711
Mfr. Part No.TMS320C5505AZCH12
TWD325.00
Each
units
150MHz - - 16bit 64 kB DSP 320 kB EPROM, Flash, ROM Fixed Point Surface Mount NFBGA 196 1.8 V, 2.5 V, 2.8 V, 3.3 V 1
RS Stock No. 177-1584
Mfr. Part No.DSPIC33EP256GP504-I/ML
BrandMicrochip
TWD119.30
Each (In a Tube of 45)
units
60MHz DSPIC 70MIPS 16bit 32 kB C 256 kB Flash ALU Surface Mount QFN 44 3.3 V 2
RS Stock No. 823-7792
Mfr. Part No.DSPIC33EP256MC502-I/SP
BrandMicrochip
TWD123.50
Each (In a Pack of 2)
units
70MHz - - 16bit 32 kB Code Efficient 256 kB Flash - Surface Mount SPDIP 28 3 → 3.6 V 2
RS Stock No. 177-1595
Mfr. Part No.DSPIC33FJ16GS502-E/MM
BrandMicrochip
TWD150.60
Each (In a Tube of 61)
units
40MHz DSPIC 40MIPS 16bit 2 kB C 16 kB Flash ALU Surface Mount QFN 28 3.3 V 2
RS Stock No. 145-6667
Mfr. Part No.ADSP-BF518BSWZ4F16
TWD789.00
Each (In a Tray of 40)
units
400MHz Blackfin - 16 bit, 32 bit 116 kB RISC 16 Mbit Flash MAC Surface Mount LQFP EP 176 1.8 V, 2.5 V, 3.3 V 2
RS Stock No. 666-8365
Mfr. Part No.dsPIC33FJ128MC802-I/MM
BrandMicrochip
TWD188.00
Each
units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Surface Mount QFN S 28 3.3 V 2
RS Stock No. 825-1032
Mfr. Part No.DSPIC33EP32MC202-I/SS
BrandMicrochip
TWD65.80
Each (In a Pack of 5)
units
140MHz - - 16bit 4 kB DSP 32 kB Flash - Surface Mount SSOP 28 3 → 3.6 V 2
RS Stock No. 178-5263
Mfr. Part No.DSPIC33FJ32MC302-I/SP
BrandMicrochip
TWD120.00
Each (In a Bag of 500)
units
40MIPS - - 16bit 4 kB RISC 32 kB Flash - Through Hole SPDIP 28 3 → 3.6 V 2
RS Stock No. 158-0167
Mfr. Part No.ADSP-BF532SBSTZ400
TWD579.40
Each (In a Tray of 40)
units
400MHz Blackfin 400MIPS 16bit - Modified Harvard - ROM, SRAM Fixed Point Surface Mount LQFP 176 1.2 V, 1.8 V, 2.5 V, 3.3 V -
RS Stock No. 177-1786
Mfr. Part No.DSPIC33EP128MC202-I/MM
BrandMicrochip
TWD97.60
Each (In a Pack of 5)
units
60MHz DSPIC 70MIPS 16bit 16 kB C 128 kB Flash ALU Surface Mount QFN 28 3.3 V 2
RS Stock No. 177-1805
Mfr. Part No.dsPIC33EP16GS502-I/SO
BrandMicrochip
TWD106.20
Each (In a Pack of 5)
units
60MHz DSPIC 70MIPS 16bit 2 kB C 16 kB Flash ALU Surface Mount SOIC 28 3.3 V 2