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. 861-0541
Mfr. Part No.dsPIC33EV256GM102-I/SO
BrandMicrochip
HK$31.37
Each
units
70MIPS - 70MIPS 16bit 16 kB Code Efficient 256 kB Flash - Surface Mount SOIC 28 4.5 → 5.5 V 2
RS Stock No. 162-7549
Mfr. Part No.TMS320VC5502PGF300
HK$126.567
Each (In a Tray of 40)
units
300MHz - 600MIPS 32bit 64 kB - 32 kB DARAM, ROM Fixed Point Surface Mount LQFP 176 1.26 V, 3.3 V -
RS Stock No. 809-9070
Mfr. Part No.ADSP-BF532SBBCZ400
HK$192.14
Each
units
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. 666-8334
Mfr. Part No.dsPIC33FJ128GP802-I/SP
BrandMicrochip
HK$46.89
Each
units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Through Hole SPDIP 28 3.3 V 2
RS Stock No. 178-5213
Mfr. Part No.DSPIC33EP512GP506-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. 177-3892
Mfr. Part No.DSPIC33FJ256MC710-I/PF
BrandMicrochip
HK$77.83
Each
units
80MHz DSPIC33FJ256MC710 40MIPS 16bit 30 kB Harvard 256 kB Flash ALU Surface Mount TQFP 100 - 2
RS Stock No. 666-8494
Mfr. Part No.dsPIC33FJ64MC802-I/SO
BrandMicrochip
HK$42.48
Each
units
40MHz - - 16bit 16 kB RISC 64 kB Flash - Surface Mount SOIC W 28 3.3 V 2
RS Stock No. 666-9661
Mfr. Part No.dsPIC33FJ128MC708A-I/PT
BrandMicrochip
HK$60.64
Each
units
40MIPS - - 16bit 16 kB RISC 128 kB Flash - Surface Mount TQFP 80 3 → 3.6 V 2
RS Stock No. 177-1586
Mfr. Part No.DSPIC33EP32GP502-I/SS
BrandMicrochip
HK$14.451
Each (In a Tube of 47)
units
60MHz DSPIC 70MIPS 16bit 4 kB C 32 kB Flash ALU Surface Mount SSOP 28 3.3 V 2
RS Stock No. 761-7267
Mfr. Part No.dsPIC33EP64MC506-I/PT
BrandMicrochip
HK$28.03
Each
units
70MIPS - - 16bit 8 kB Harvard 64 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 134-5583
Mfr. Part No.dsPIC33EP128GS702-I/SO
BrandMicrochip
HK$38.954
Each (In a Tube of 27)
units
60MHz dsPIC33EP 70MIPS 16bit 8 kB DSP 128 kB Flash MAC Surface Mount SOIC 28 3 → 3.6 V 2
RS Stock No. 177-1584
Mfr. Part No.DSPIC33EP256GP504-I/ML
BrandMicrochip
HK$34.966
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. 799-0146
Mfr. Part No.DSPIC33EP512GP504-I/PT
BrandMicrochip
HK$38.25
Each
units
60MHz - - 16bit 48 kB Harvard 512 kB Flash - Surface Mount TQFP 44 3 → 3.6 V 2
RS Stock No. 893-8329
Mfr. Part No.DSPIC33EP64GS506-I/PT
BrandMicrochip
HK$41.78
Each
units
1MHz - 70MIPS 16bit 8 kB Code Efficient, MCU, Modified Harvard 64 kB EEPROM, SRAM MAC Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 177-1786
Mfr. Part No.DSPIC33EP128MC202-I/MM
BrandMicrochip
HK$23.268
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. 178-5216
Mfr. Part No.DSPIC33FJ64GS606-50I/PT
BrandMicrochip
HK$49.263
Each (In a Tray of 160)
units
50MHz - 50MIPS 16bit 9 kB Code Efficient 64 kB Flash Fixed Point, Floating Point Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 799-0149
Mfr. Part No.DSPIC33EP512GP506-I/PT
BrandMicrochip
HK$40.72
Each
units
60MHz - - 16bit 48 kB Harvard 512 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 889-5550
Mfr. Part No.DSPIC30F4013-30I/P
BrandMicrochip
HK$59.90
Each (In a Tube of 10)
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. 799-0143
Mfr. Part No.DSPIC33EP512MC504-I/PT
BrandMicrochip
HK$38.25
Each
units
60MHz - - 16bit 48 kB Harvard 512 kB Flash - Surface Mount TQFP 44 3 → 3.6 V 2
RS Stock No. 177-1580
Mfr. Part No.DSPIC33EP128GP502-I/SP
BrandMicrochip
HK$27.151
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