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AD1955:  High Performance, Multibit Sigma-Delta DAC with SACD Playback

Product Status:Production
Data
Sheet
AD1955 Data Sheet Rev 0, 10/2002 (pdf 897kB)

Product Details

Product Status:Production
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The AD1955 is a complete, high performance, single chip stereo digital audio playback system comprised of a multi-bit sigma-delta modulator, digital interpolation filters and a continuous-time differential current output DAC section. Unique to this audio DAC is the separate SACD (super audio CD) bit-stream and external digital filter interface, which allows users maximum system flexibility. The AD1955 supports 24-bits, 192 kHz sample rate and is designed for use in high-end SACD players, DVD-audio, home theater, automotive audio, digital mixing consoles, digital audio effect processors and sampling musical keyboards.

Applications

  • High-End DVD-Audio, SACD, CD, Home Theatre Systems
  • Automotive Audio Systems, Sampling Musical Keyboards, Digital
  • Mixing Consoles, Digital Audio Effects Processors

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FEATURES and BENEFITS

  • Supports 24-Bits, up to 192 kHz Sample Rate PCM Audio Data
  • Supports SACD bit-stream and External Digital Filter Interface
  • Multibit Sigma Delta Modulator with "Perfect Differential Linearity Restoration" for Reduced Idle Tones and Noise Floor
  • Data Directed Scrambling DAC - Least Sensitive to Jitter
  • 8.64 mA p-p Differential Output Current for Optimum Performance, with +3 dB headroom in SACD mode
  • 5 V Power Supply Stereo Audio DAC System
  • 120 dB SNR/DNR (not muted) at 48KHz Sample Rate (A-Weighted Stereo)
  • 123 dB SNR/DNR (Mono)
  • -110 dB THD+N
  • 110 dB Stopband Attenuation with ±0.0002dB Passband Ripple
  • Flexible Serial Data Port with Right-Justified, Left-Justified, I2S-Compatible and DSP Serial Port
  • 28 Lead SSOP Plastic Package

Functional Block Diagram for AD1955

AD1955 Diagram

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Of Note ...

For more information on ADI's Audio Portfolio, visit the Audio Solutions home page.

Documentation

Title Content Type File Type
AD1955: High Performance Multibit Sigma-Delta DAC with SACD Playback Data Sheet  (Rev 0, 10/2002) (pdf, 897 kB) Data Sheets PDF
AN-1006: Using the EVAL-ADUSB2EBZ  (pdf, 349 kB) Application Notes PDF
AN-349: Keys to Longer Life for CMOS  (pdf, 89 kB)
Here's How CMOS Can be Protected Against Abuse 		Application Notes PDF
AN-211: The Alexander Current-Feedback Audio Power Amplifier  (pdf, 1154 kB) Application Notes PDF
UG-048: Evaluation Board User Guide for AD1955  (pdf, 1775 kB) User Guides PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
Automated Register Window Builder Software Modules HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

AD1955 Model Options
Model Package Pins Temp.
Range 		Packing,
Qty 		Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
AD1955ARSZ Status: Production 28 ld SSOP 28 Comm. Tube, 47 $7.59 $6.86 Y  Material Info PCN Purchase Sample
AD1955ARSZRL Status: Production 28 ld SSOP 28 Comm. Reel, 1500 - $6.86 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

AD1955 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-AD1955EBZ Status: Production Evaluation Board $499.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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