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. 923-6845
Mfr. Part No.TMS320F2812PGFA
HK$216.10
Each (In a Tray of 40)
units
150MHz - 150MIPS 32bit 36 kB Harvard 256 kB Flash EEPROM Fixed Point Surface Mount LQFP 176 1.9 V, 3.3 V -
RS Stock No. 709-3908
Mfr. Part No.TMS320F2812PGFA
HK$213.29
Each
units
150MHz - 150MIPS 32bit 36 kB Harvard 256 kB Flash EEPROM Fixed Point Surface Mount LQFP 176 1.9 V, 3.3 V -
RS Stock No. 666-8292
Mfr. Part No.dsPIC30F4011-30I/PT
BrandMicrochip
HK$52.18
Each
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. 823-3400
Mfr. Part No.DSPIC33EP256MC502-I/SO
BrandMicrochip
HK$29.53
Each (In a Pack of 2)
units
60MHz - - 16bit 32 kB RISC 256 kB Flash - Surface Mount SOIC 28 3 → 3.6 V 2
RS Stock No. 889-5187
Mfr. Part No.dsPIC30F4011-30I/PT
BrandMicrochip
HK$52.604
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. 823-3431
Mfr. Part No.DSPIC33FJ64GS610-I/PT
BrandMicrochip
HK$59.32
Each
units
40MHz - - 16bit 9 kB RISC 64 kB Flash - Surface Mount TQFP 100 3 → 3.6 V 2
RS Stock No. 825-1032
Mfr. Part No.DSPIC33EP32MC202-I/SS
BrandMicrochip
HK$13.576
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. 178-5214
Mfr. Part No.DSPIC33EP512MC506-I/PT
BrandMicrochip
HK$38.923
Each (In a Tray of 160)
units
60MHz - - 16bit 48 kB Harvard 512 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 177-1984
Mfr. Part No.DSPIC30F3013-20I/SO
BrandMicrochip
HK$35.955
Each (In a Pack of 2)
units
40MHz DSPIC 20MIPS 16bit 2.048 kB - 24 kB Flash ALU Surface Mount SOIC 28 5.5 V 2
RS Stock No. 177-1857
Mfr. Part No.DSPIC30F2010-20I/SO
BrandMicrochip
HK$31.145
Each (In a Pack of 2)
units
40MHz DSPIC 20MIPS 16bit 512 B - 12 kB Flash ALU Surface Mount SOIC 28 5.5 V 1
RS Stock No. 759-1887
Mfr. Part No.ADSP-BF533SBSTZ400
HK$213.56
Each
units
400MHz Blackfin - 16bit 16 (Instruction SRAM Cache) kB, 32 (Data SRAM/Data SRAM Cache) kB, 64 (Instruction SRAM) kB RISC 1 kB ROM MAC Surface Mount LQFP 176 0.8 → 1.45 V, 1.75 → 3.6 V 1
RS Stock No. 876-6755
Mfr. Part No.DSPIC33FJ128MC706-I/PT
BrandMicrochip
HK$58.988
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. 666-8277
Mfr. Part No.dsPIC30F3013-30I/SO
BrandMicrochip
HK$35.96
Each
units
30MIPS dsPIC30F 30MIPS 16bit 2.048 kB RISC 1.024 kB, 24 kB Flash - Surface Mount SOIC 28 2.5 → 5.5 V 2
New
RS Stock No. 208-8621
Mfr. Part No.TMS320F2811PBKA
HK$177.052
Each (In a Tray of 90)
units
150MHz DSPs 150 32bit 36 KB - 256 KB - - - LQFP 128 - -
RS Stock No. 177-1591
Mfr. Part No.DSPIC33EP512MC806-I/MR
BrandMicrochip
HK$70.04
Each (In a Tube of 40)
units
60MHz DSPIC 70MIPS 16bit 52 kB C 536 kB Flash ALU Surface Mount QFN 64 3.6 V 4
RS Stock No. 666-8337
Mfr. Part No.dsPIC33FJ128GP802-I/SO
BrandMicrochip
HK$45.22
Each
units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Surface Mount SOIC W 28 3.3 V 2
RS Stock No. 666-9692
Mfr. Part No.dsPIC33FJ256MC710A-I/PF
BrandMicrochip
HK$73.07
Each
units
40MIPS - - 16bit 30 kB RISC 256 kB Flash - Surface Mount TQFP 100 3 → 3.6 V 2
New
RS Stock No. 208-8622
Mfr. Part No.TMS320F2811PBKA
HK$215.82
Each
units
150MHz DSPs 150 32bit 36 KB - 256 KB - - - LQFP 128 - -
RS Stock No. 177-3764
Mfr. Part No.DSPIC33EP256GP504-I/PT
BrandMicrochip
HK$32.085
Each (In a Pack of 2)
units
70MHz DSPIC33EP256GP504 70MIPS 16bit 32 kB Harvard 256 kB Flash ALU Surface Mount TQFP 44 - 2
RS Stock No. 178-4869
Mfr. Part No.DSPIC33EP512MC202-I/SO
BrandMicrochip
HK$34.966
Each (In a Tube of 27)
units
5.5MHz - - 16bit 48 kB RISC 512 kB Flash - Surface Mount SOIC 28 3 → 3.6 V 2