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

Product Details

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.


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

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (2)

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

PCN-PDN Information

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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.

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Evaluation Boards Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
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.