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. 161-0546
Mfr. Part No.ADSP-BF533SBBZ500
R 431.403
Each (In a Tray of 84)
units
500MHz Blackfin 500MIPS 16bit - Modified Harvard - ROM, SRAM Fixed Point Surface Mount BGA 169 1.2 V, 1.8 V, 2.5 V, 3.3 V -
RS stock no. 496-7345
Mfr. Part No.ADSP-BF533SBBZ500
R 473.24
Each
units
500MHz Blackfin 500MIPS 16bit - Modified Harvard - ROM, SRAM Fixed Point Surface Mount BGA 169 1.2 V, 1.8 V, 2.5 V, 3.3 V -
RS stock no. 835-3835
Mfr. Part No.ADSP-BF706BCPZ-4
R 294.86
Each
units
400MHz Blackfin - 16/32bit 1.024 MB Modified Harvard 512 kB ROM ALU Surface Mount LFCSP 88 1.8 V, 3.3 V 2
RS stock no. 159-9536
Mfr. Part No.ADAU1452WBCPZ
R 139.409
Each (In a Tray of 168)
units
294.912MHz SHARC 294MIPS 32bit - DSP - Flash Fixed Point Surface Mount LFCSP 72 3.3 V -
RS stock no. 798-9916
Mfr. Part No.ADAU1452WBCPZ
R 203.46
Each
units
294.912MHz SHARC 294MIPS 32bit - DSP - Flash Fixed Point Surface Mount LFCSP 72 3.3 V -
RS stock no. 759-1887
Mfr. Part No.ADSP-BF533SBSTZ400
R 345.08
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. 183-2206
Mfr. Part No.ADAU1445YSVZ-3A
R 263.66
Each
units
172MHz ADAU1445 3584 28 bit, 56 bit 8 k - - EEPROM MAC Surface Mount TQFP_EP 100 1.8 V, 3.3 V -
RS stock no. 160-2906
Mfr. Part No.ADSP-BF512KBCZ-4
R 167.881
Each (In a Tray of 189)
units
400MHz Blackfin 400MIPS 16bit 32 kB RISC 116 kB OTP ALU Surface Mount CSP BGA 168 1.8 V 2
RS stock no. 809-9099
Mfr. Part No.ADSP-2181BSTZ-133
R 944.66
Each
units
20MHz - 33.3MIPS 16bit 80 kB DSP - ROMLess Fixed Point Surface Mount TQFP 128 4.5 → 5.5 V -
RS stock no. 158-0581
Mfr. Part No.ADSP-2181BSZ-133
R 775.464
Each (In a Tray of 24)
units
33.3MHz - 33.3MIPS 16bit 80 kB Enhanced Harvard - RAM Fixed Point Surface Mount MQFP 128 5 V -
RS stock no. 160-4510
Mfr. Part No.ADSP-21065LCSZ-240
R 918.127
Each (In a Tray of 24)
units
60MHz SHARC 60MIPS 32bit 544 kB Harvard - ROMLess Floating Point Surface Mount MQFP 208 3.13 → 3.6 V -
RS stock no. 877-9212
Mfr. Part No.ADSP-BF561SKBZ600
R 721.05
Each
units
600MHz Blackfin 600MIPS 16bit 32 kB RISC 328 kB Flash ALU Surface Mount PBGA 297 1.35 V, 3.3 V 1
RS stock no. 158-0582
Mfr. Part No.ADSP-2185MKSTZ-300
R 363.135
Each (In a Tray of 90)
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. 158-0488
Mfr. Part No.AD6620ASZ
R 505.093
Each (In a Tray of 84)
units
- - - - - - - - - PCB - - - -
RS stock no. 159-7706
Mfr. Part No.ADSP-21262SKSTZ200
R 433.41
Each (In a Tray of 60)
units
200MHz SHARC - 32 bit, 40 bit 2 (SRAM) Mbit Super Harvard 4 Mbit ROM Fixed Point, Floating Point Surface Mount LQFP 144 1.14 → 1.26 V, 3.13 → 3.47 V 6
RS stock no. 802-3969
Mfr. Part No.ADSP-21479BSWZ-2A
R 328.59
Each
units
266MHz SHARC - 32bit 5 Mbit Super Harvard 4 Mbit ROM Floating Point Surface Mount LQFP 100 3.3 V 1
RS stock no. 912-6381
Mfr. Part No.ADSP-2191MKSTZ-160
R 583.208
Each (In a Tray of 60)
units
160MHz ADSP-21xx 160MIPS 16bit 160 kB - - SRAM - Surface Mount LQFP 144 2.5 V, 3.3 V -
RS stock no. 160-2633
Mfr. Part No.ADSP-2181BSTZ-133
R 858.821
Each (In a Tray of 72)
units
20MHz - 33.3MIPS 16bit 80 kB DSP - ROMLess Fixed Point Surface Mount TQFP 128 4.5 → 5.5 V -
RS stock no. 809-9102
Mfr. Part No.ADSP-21369KSWZ-4A
R 981.73
Each
units
800MHz SHARC 350MIPS 32bit 2 Mbit Harvard 6 Mbit ROM Floating Point Surface Mount LQFP 208 3.3 V 2
RS stock no. 160-2913
Mfr. Part No.ADSP-BF534BBCZ-5B
R 375.413
Each (In a Tray of 90)
units
500MHz Blackfin 500MIPS 16bit 32 kB RISC 132 kB Flash ALU Surface Mount CSP BGA 208 1.3 V, 3.3 V 2