SigmaDSP™ Audio Processors
DSP that every analog designer can love ...
SigmaDSP™ digital audio processors enable anyone to use a fully programmable audio DSP that is easily configurable through the SigmaStudio™ Graphical Development Tool. The latest SigmaDSP products address the automotive and portable audio markets with our highest-performance SigmaDSP and most power-conscious processor. The ADAU1442, ADAU1445, and ADAU1446 SigmaDSPs combine a 172 MHz core with a routing matrix, including asynchronous sample rate converters and S/PDIF Rx/Tx. The routing matrix allows connection of many digital sources running at different sample rates to seamlessly connect to the audio processor. The first low-power SigmaDSP, the ADAU1761, includes the same powerful SigmaDSP found in other parts and is paired with stereo ADCs and DACs at an SNR performance greater than 100 dB.
The first generation SigmaDSP products, including the AD1953, combine three high-performance audio DACs with the powerful DSP core. The all-digital second generation parts, the AD1940 and AD1941, feature higher processing power with more I/O channels. The ADAU1701 and ADAU1702 incorporate full analog I/O, digital I/O and stand-alone functionality to provide a full audio processing system on a single chip. The ADAU1401 has similar functionality to the ADAU1701, but is designed specifically for the automotive market and specified over the extended temperature range.
SigmaStudio is a fully-graphical programming tool which allows the user to create a signal flow using familiar audio processing blocks, such as biquad filters, delays, mixers, and dynamics processors. This design can be linked directly to the SigmaDSP hardware and the SigmaStudio tool can be used as a real-time control surface for the design's parameters, allowing easy system tuning. Third-party algorithms, from developers such as Dolby® and SRS® are available for the SigmaDSP and integrate seamlessly into the SigmaStudio environment. Please contact Analog Devices for a complete list of available third-party algorithms.
Evaluation kits, including evaluation boards and the full SigmaStudio tools package, are available now for all SigmaDSP products. Check the SigmaDSP FAQ for any questions you might have. If they are not answered there, direct any SigmaDSP support inquiries to sigmadsp@analog.com
Dolby is a registered trademark of Dolby Laboratories.
SRS is a registered trademark of SRS Labs, Inc.
Read more about SigmaDSP and SigmaStudio Products ...
AD1954 one of EDN's 100 Top Products for 2004
Technical articles ...
- Flexible Silicon: GUI-programmable Audio Processors – an EDN BenchPress Project
(EDN, 9/29/2005) - Flexible Silicon: GUI-programmable Audio Processors (Part 2)
(EDN, 10/27/2005) - SigmaDSP™ Digital Audio Processing
(Analog Dialogue, Volume 36, Number 1, January-February, 2002) - AN-923: Designing a System Using the ADAU1701/ADAU1702 in Self-Boot Mode
(pdf, 134 bytes)
SigmaDSP Products Selection Table
| Part # | Instructions/ Cycle |
DNR | THD+N | Digital I/O channels | Analog I/O channels (ADCs/DACs) |
Product Description |
|---|---|---|---|---|---|---|
| AD1940 | 1536 | - | - | 16/16 | 0/0 | SigmaDSP Multichannel 28-/56-Bit Audio Processor |
| AD1941 | 1536 | - | - | 16/16 | 0/0 | SigmaDSP Multichannel 28-/56-Bit Audio Processor |
| AD1953 | 512 | 112 | -100 | 4/6 | 0/3 | SigmaDSP 3 Ch, 26-/48-Bit Processing D/A |
| AD1954 | 512 | 112 | -100 | 4/2 | 0/3 | SigmaDSP 3 Ch, 26-/48-Bit Processing D/A |
| ADAU1401 | 1024 | ADC: 100 DAC: 104 |
ADC: -83 DAC: -90 |
8/8 | 2/4 | 28/56-Bit Automotive Audio Processor with Two ADCs and Four DACs |
| ADAU1701 | 1024 | ADC: 100 DAC: 104 |
ADC: -83 DAC: -90 |
8/8 | 2/4 | SigmaDSP 28/56-Bit Audio Processor with 2 ADC/4 DAC |
| ADAU1702 | 512 | ADC: 100 DAC: 104 |
ADC: -83 DAC: -90 |
8/8 | 2/4 | SigmaDSP 28/56-Bit Audio Processor with 2 ADC/4 DAC |
All SigmaDSP support inquiries can be directed to sigmadsp@analog.com.