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AD1953:  SigmaDSP® Digital Audio Processor

Информация о продукте

Новые альтернативные решения:
  • ADAU1401A SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs

The AD1953 is a complete, 26-bit, single-chip, 3-channel digital audio playback system with built-in DSP functionality. Key features include: 3 channels of digital audio, 6-channel TDM output mode, a 7-band, 48-bit stereo equalizer, delays for loudspeaker location adjustment, Phat Stereo™ spatial enhancement, and a dual-band, professional-quality dynamics processor. Its three DACs achieve 112 dB signal-to-noise ratio (SNR) at 48 kHz. Its dynamic processing features include:

  • Finely-tuned bass boost to enhance low frequencies for small loudspeakers
  • Algorithms that virtually increase loudness by removing distortion at high volumes
  • Midnight mode which automatically reduces loudness in high-volume instances (e.g., sudden loud scenes on DVDs)
  • Low-level expansion to lift low-volume signals above road noise (for car stereos)

Pricing and Availability:
The AD1953 SigmaDSP Digital Audio Processor is available in a 48-pin TQFP package and is rated for the extended -40°C to +105°C temperature range. The AD1953 is sampling now; production begins Fall 2002. Prices begin at $5.88 in 10,000-piece quantities.

Applications

  • 2.0/2.1 Channel Audio Systems (2 Main Channels Plus Subwoofer)
  • Multichannel Automotive Sound Systems
  • Multimedia Audio
  • Mini Component Stereo
  • Home Theater Systems (AC-3 Postprocessor)
  • Musical Instruments
  • In-Seat Sound Systems (Aircraft, Motor Coaches)

ОСОБЕННОСТИ И ПРЕИМУЩЕСТВА

  • 5 V 3-Channel Audio DAC System
  • Digital Audio Output (2-Channel or 6-Channel Packed Mode)
  • Accepts Sample Rates up to 48 kHz
  • 7 Biquad Filter Sections per Channel
  • Dual Dynamic Processor with Arbitrary Input/Output
  • Curve and Adjustable Time Constants
  • 0 ms to 6 ms Variable Delay/Channel for Speaker Alignment
  • See data sheet for additional features

Functional Block Diagram for AD1953

Check the SigmaDSP FAQ for any questions you might have. If they are not answered there, direct any SigmaDSP support inquiries to the SigmaDSP support forum on EngineerZone.

Документация

Наименование Тип контента Тип файлов
AD1953: SigmaDSP™ Three-Channel, 26-Bit Signal Processing DAC Data Sheet (Rev 0, 04/2003) (pdf, 750 kB) Технические описания PDF
AN-620: Using the AD1836 and AD1953 for a 4-In/9-Out Analog System with DSP  (pdf, 66 kB) Статьи по применению PDF
AN-211: The Alexander Current-Feedback Audio Power Amplifier  (pdf, 1154 kB) Статьи по применению PDF
Sigma Studio Overview
Familiar audio processing blocks can be wired together as in a schematic, and the compiler generates DSP-ready code and a control surface for setting and tuning parameters.
Videos HTML
VisualDSP++ 5.0 Linker and Utilities Manual (Revision 3.5, January 2011)  (pdf, 2290 kB) | Request a CD Руководства по программному обеспечению PDF
Audio Processors, Amplifiers Deliver Complete HDTV Audio Subsystem
(EE Times, 10/1/2007)
Обзоры продукции HTML
ADI: Analog Essential To HDTV Experience
(Electronic Design, 10/1/2007)
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Best Products Winners: Hardware and Software
(Design News, March 20, 2006)
Обзоры продукции HTML
Which SigmaDSP is right for my application? FAQs/RAQs HTML
Which SigmaDSP parts are qualified for automotive applications? FAQs/RAQs HTML
What evaluation boards are available for the SigmaDSP processors? FAQs/RAQs HTML
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Where can I see how much of the SigmaDSP resources my project consumes? FAQs/RAQs HTML
My signal flow is running out of instructions. What can I do to save resources? FAQs/RAQs HTML
I can't use the maximum delay memory in my project. What's happening? FAQs/RAQs HTML
When the signal input to my compressor is above 6 dB, the compression stops and my signal starts increasing. What's happening? FAQs/RAQs HTML
How can I eliminate pops when changing the delay parameter at run-time? FAQs/RAQs HTML
My application requires that I use multiple blocks that generate many addresses that I then have to map to my microcontroller code. Can I fix specific memory addresses for specific blocks to avoid all this mapping overhead? FAQs/RAQs HTML
What is the difference between the AD1953 and AD1954? FAQs/RAQs HTML
How can I tune my own hardware design using SigmaStudio? FAQs/RAQs HTML
Where can I get further support for the SigmaDSP? FAQs/RAQs HTML
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