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. 177-3932
Mfr. Part No.DSPIC30F6014A-20E/PF
BrandMicrochip
TWD443.00
Each
units
120MHz DSPIC30F6014A 30MIPS 16bit 8 kB Harvard 144 kB Flash ALU Surface Mount TQFP 64 - 2
RS Stock No. 880-6708
Mfr. Part No.dsPIC33EV32GM102-I/SP
BrandMicrochip
TWD104.00
Each (In a Pack of 2)
units
25MHz - 70MIPS 16bit 4 kB C Compiler, DSP, MCU, Modified Harvard 32 kB Flash ALU, MAC Through Hole SPDIP 28 4.5 → 5.5 V 2
RS Stock No. 869-6637
Mfr. Part No.DSPIC33FJ32MC204-I/PT
BrandMicrochip
TWD107.60
Each (In a Tray of 160)
units
40MIPS - - 16bit 32 kB RISC 256 kB Flash - Surface Mount TQFP 44 3 → 3.6 V 1
RS Stock No. 876-6755
Mfr. Part No.DSPIC33FJ128MC706-I/PT
BrandMicrochip
TWD173.40
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. 399-785
Mfr. Part No.DSPIC33FJ256MC710-I/PT
BrandMicrochip
TWD243.00
Each
units
40MIPS - - 16bit 32 kB RISC 256 kB Flash - Surface Mount TQFP 100 3 → 3.6 V 2
RS Stock No. 177-1776
Mfr. Part No.DSPIC33EP512MC806-I/MR
BrandMicrochip
TWD279.00
Each
units
60MHz DSPIC 70MIPS 16bit 52 kB C 536 kB Flash ALU Surface Mount QFN 64 3.6 V 4
RS Stock No. 177-1596
Mfr. Part No.DSPIC33FJ16GS502-I/MM
BrandMicrochip
TWD137.40
Each (In a Tube of 61)
units
40MHz DSPIC 50MIPS 16bit 2 kB C 16 kB Flash ALU Surface Mount QFN 28 3.3 V 2
RS Stock No. 889-5178
Mfr. Part No.dsPIC30F3013-30I/SO
BrandMicrochip
TWD110.90
Each (In a Tube of 27)
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
RS Stock No. 177-3514
Mfr. Part No.DSPIC33EP512MU814-E/PH
BrandMicrochip
TWD325.00
Each (In a Tray of 90)
units
60MHz DSPIC33EP512MU814 60MIPS 16bit 52 kB Harvard 536 kB Flash ALU Surface Mount TQFP 144 - 4
RS Stock No. 177-3984
Mfr. Part No.DSPIC33EP128MC206-I/PT
BrandMicrochip
TWD118.00
Each (In a Pack of 2)
units
70MHz DSPIC33EP128MC206 70MIPS 16bit 16 kB Harvard 128 kB Flash ALU Surface Mount TQFP 64 - 2
RS Stock No. 666-8378
Mfr. Part No.dsPIC33FJ128MC804-I/PT
BrandMicrochip
TWD203.00
Each
units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Surface Mount TQFP 44 3.3 V 2
RS Stock No. 666-8491
Mfr. Part No.dsPIC33FJ64MC804-I/PT
BrandMicrochip
TWD187.00
Each
units
40MHz - - 16bit 16 kB RISC 64 kB Flash - Surface Mount TQFP 44 3.3 V 2
RS Stock No. 178-4151
Mfr. Part No.DSPIC33FJ128MC706A-I/PT
BrandMicrochip
TWD179.30
Each (In a Tray of 160)
units
40MIPS - - 16bit 16 kB RISC 128 kB Flash - Surface Mount TQFP 64 3 → 3.6 V 2
RS Stock No. 399-791
Mfr. Part No.DSPIC33FJ128GP708-I/PT
BrandMicrochip
TWD221.00
Each
units
40MIPS - - 16bit 16 kB RISC 128 kB Flash - Surface Mount TQFP 80 3 → 3.6 V 2
RS Stock No. 177-3858
Mfr. Part No.DSPIC33FJ256MC710A-H/PF
BrandMicrochip
TWD401.00
Each
units
40MHz DSPIC33FJ256MC710A 20MIPS 16bit 30 kB Harvard 256 kB Flash ALU Surface Mount TQFP 100 - 2
RS Stock No. 861-0557
Mfr. Part No.dsPIC33EV256GM106-I/MR
BrandMicrochip
TWD148.00
Each
units
70MIPS - 70MIPS 16bit 16 kB Code Efficient 256 kB Flash - Surface Mount QFN 64 4.5 → 5.5 V 2
RS Stock No. 666-8334
Mfr. Part No.dsPIC33FJ128GP802-I/SP
BrandMicrochip
TWD185.00
Each
units
40MHz - - 16bit 16 kB RISC 128 kB Flash - Through Hole SPDIP 28 3.3 V 2
RS Stock No. 177-3512
Mfr. Part No.DSPIC33EP256GP504-I/PT
BrandMicrochip
TWD102.90
Each (In a Tray of 160)
units
70MHz DSPIC33EP256GP504 70MIPS 16bit 32 kB Harvard 256 kB Flash ALU Surface Mount TQFP 44 - 2
RS Stock No. 177-1586
Mfr. Part No.DSPIC33EP32GP502-I/SS
BrandMicrochip
TWD69.00
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. 178-4848
Mfr. Part No.DSPIC33EP512MC502-I/SP
BrandMicrochip
TWD142.10
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