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 Audio Digital-to-Analogue Converter (DAC). All this signal processing happens at very high speeds. RS Components offer a wide range of high-quality semiconductor components from leading brands including Microchip, Texas Instruments and Analog Devices.

What are digital signal processors used for?

Digital signal processors (DSPs) 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 high-performance electronic device 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.


Digital Signal Processing is used in a wide range of electronics applications. The specialized microprocessor chips are designed for performing functions like add, subtract, multiply and divide. Some of the most common areas are;

  • Audio signal processing
  • Digital signal processing
  • Radar and sonar
  • Mobile phones
  • High- definition television

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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. 178-4867
Mfr. Part No.DSPIC33EP128MC502-I/SO
Each (In a Tube of 27)
70MHz - - 16bit 16 kB Modified Harvard 128 kB Flash - Surface Mount SOIC 28 3 to 3.6 V 2
RS Stock No. 178-4142
Mfr. Part No.DSPIC30F5013-20I/PT
Each (In a Tray of 119)
20MIPS dsPIC30F 30MIPS 16bit 4 kB RISC 66 kB Flash - Surface Mount TQFP 80 2.5 to 5.5 V 2
RS Stock No. 399-795
Mfr. Part No.DSPIC33FJ32GP202-I/SP
40MIPS - - 16bit 2 kB RISC 32 kB Flash - Through Hole SPDIP 28 3 to 3.6 V 1
RS Stock No. 399-741
Mfr. Part No.DSPIC33FJ12GP202-I/SO
Each (In a Pack of 5)
40MIPS - - 16bit 1 kB RISC 12 kB Flash - Surface Mount SOIC 28 3 → 3.6 V 1
RS Stock No. 178-4141
Mfr. Part No.DSPIC33FJ64GS608-I/PT
Each (In a Tray of 119)
50kHz - 50MIPS 16bit 9 kB RISC 64 kB Flash Fixed Point, Floating Point Surface Mount TQFP 80 3.3 V 2
RS Stock No. 399-739
Mfr. Part No.DSPIC33FJ12MC201-I/SO
Each (In a Pack of 5)
40MIPS - - 16bit 1 kB RISC 12 kB Flash - Surface Mount SOIC 20 3 → 3.6 V 1