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. 798-5226
Mfr. Part No.DSPIC33FJ64GS608-I/PT
BrandMicrochip
$8.82
Each
units
50kHz - 50MIPS 16bit 9 kB RISC 64 kB Flash Fixed Point, Floating Point Surface Mount TQFP 80 3.3 V 2
RS Stock No. 666-9683
Mfr. Part No.dsPIC33FJ256GP506A-I/PT
BrandMicrochip
$8.50
Each
units
40MIPS - - 16bit 16 kB RISC 256 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 666-8330
Mfr. Part No.dsPIC33FJ128GP802-E/SP
BrandMicrochip
$11.02
Each
units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Through Hole SPDIP 28 3.3 V 2
RS Stock No. 178-4847
Mfr. Part No.DSPIC33EP512GP502-I/SP
BrandMicrochip
$6.30
Each (In a Tube of 15)
units
5.5MHz - - 16bit 48 kB RISC 512 kB Flash - Through Hole PDIP 28 3 → 3.6 V 2
RS Stock No. 798-9916
Mfr. Part No.ADAU1452WBCPZ
$24.75
Each
units
294.912MHz SHARC 294MIPS 32bit - DSP - Flash Fixed Point Surface Mount LFCSP 72 3.3 V -
RS Stock No. 889-5187
Mfr. Part No.dsPIC30F4011-30I/PT
BrandMicrochip
$6.954
Each (In a Tray of 160)
units
30MIPS dsPIC30F 30MIPS 16bit 2.048 kB RISC 1.024 kB, 48 kB Flash - Surface Mount TQFP 44 2.5 → 5.5 V 2
RS Stock No. 770-7739
Mfr. Part No.dsPIC33EP128MC502-I/SO
BrandMicrochip
$5.37
Each
units
70MHz - - 16bit 16 kB Modified Harvard 128 kB Flash - Surface Mount SOIC 28 3 → 3.6 V 2
RS Stock No. 697-7798
Mfr. Part No.ADSP-2185MKSTZ-300
$35.46
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. 861-0545
Mfr. Part No.dsPIC33EV256GM102-I/SP
BrandMicrochip
$7.54
Each
units
70MIPS - 70MIPS 16bit 16 kB Code Efficient 256 kB Flash - Through Hole PDIP 28 4.5 → 5.5 V 2
RS Stock No. 177-3892
Mfr. Part No.DSPIC33FJ256MC710-I/PF
$16.65
Each
units
80MHz DSPIC33FJ256MC710 40MIPS 16bit 30 kB Harvard 256 kB Flash ALU Surface Mount TQFP 100 - 2
RS Stock No. 912-5303
Mfr. Part No.DSPIC33EP32GS202-I/SO
BrandMicrochip
$6.10
Each (In a Pack of 2)
units
120MHz - - 16bit 2 kB Harvard 32 kB Flash Fixed Point, Floating Point, MAC Surface Mount SOIC 28 3.3 V 1
RS Stock No. 177-1786
Mfr. Part No.DSPIC33EP128MC202-I/MM
$4.816
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. 869-6110
Mfr. Part No.DSPIC33EV256GM104-I/PT
BrandMicrochip
$7.39
Each
units
70MHz - 70MIPS 16bit 16 kB C 256 kB Flash - Surface Mount TQFP 44 4.5 → 5.5 V 2
RS Stock No. 177-1595
Mfr. Part No.DSPIC33FJ16GS502-E/MM
$6.638
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. 799-0127
Mfr. Part No.DSPIC33EP512GM706-I/MR
BrandMicrochip
$9.30
Each
units
60MHz - - 16bit 48 kB Harvard 512 kB Flash - Surface Mount QFN 64 3 → 3.6 V 4
RS Stock No. 912-5290
Mfr. Part No.DSPIC33EP32GS202-I/SS
BrandMicrochip
$5.74
Each (In a Pack of 2)
units
120MHz - - 16bit 2 kB Harvard 32 kB Flash Fixed Point, Floating Point, MAC Surface Mount SSOP 28 3.3 V 1
RS Stock No. 134-5626
Mfr. Part No.dsPIC33EP128GS804-I/PT
BrandMicrochip
$10.91
Each
units
60MHz dsPIC33EP 70MIPS 16bit 8 kB DSP 128 kB Flash MAC Surface Mount TQFP 44 3 → 3.6 V 2
RS Stock No. 160-2897
Mfr. Part No.ADSP-21488KSWZ-4B
$32.193
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. 912-6384
Mfr. Part No.ADSP-BF533SBBCZ500
$34.018
Each (In a Tray of 189)
units
500MHz Blackfin 500MIPS 16bit - Modified Harvard - ROM, SRAM Fixed Point Surface Mount CSP BGA 160 1.2 V, 1.8 V, 2.5 V, 3.3 V -
RS Stock No. 666-9709
Mfr. Part No.dsPIC33FJ64GP306A-I/PT
BrandMicrochip
$8.04
Each
units
40MIPS - - 16bit 16 kB RISC 64 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
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