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AD1954:  SigmaDSP® Digital Audio Processor with On-Board Converters

The AD1954 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; a 7-band, 48-bit stereo equalizer; delays for loudspeaker location adjustment; Phat Stereo™ spatial enhancement; and a dual-band, professional-quality dynamic processor. Its three DACs achieve 112 dB signal-to-noise ratio (SNR) ...More

AD1954:  SigmaDSP® Digital Audio Processor with On-Board Converters

Product Description

The AD1954 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; a 7-band, 48-bit stereo equalizer; delays for loudspeaker location adjustment; Phat Stereo™ spatial enhancement; and a dual-band, professional-quality dynamic processor. Its three DACs achieve 112 dB signal-to-noise ratio (SNR) at 48 kHz. Its dynamic processing features include:

  • Fine-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 AD1954 SigmaDSP Digital Audio Processor is available in either a 44-pin MQFP or a 48-pin TQFP package and is rated for the extended -40°C to +105°C temperature range. The AD1954 is in Production, and Samples are available. Prices begin at $5.88 in 10,000-piece quantities.

Applications

  • 2.0/2.1 Channel Audio Systems (Two Main Channels plus Subwoofer)
  • Multimedia Audio
  • Automotive Sound Systems
  • Minicomponent Stereo
  • Home Theater Systems (AC-3 Postprocessor)
  • Musical Instruments
  • In-Seat Sound Systems (Aircraft, Motor Coaches)

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    • 5 V 3-Channel Audio DAC System
    • 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
    • Stereo Spreading Algorithm for Phat Stereo™ Effect
    • Differential Output for Optimum Performance
    • See data sheet for additional features
    • DAC DNR (dB): 112dB
    • SNR (dB): 112dB
    • DAC THD+N @ 1 kHz (-3dB): 100dB
    • Product Description: SigmaDSP 3 Ch, 26-/48-Bit Processing D/A

    Functional Block Diagram for AD1954

    Recommended for new designs is the AD1953. The AD1953 has all the same features as the AD1954 as well as some additional functions. Both parts are priced the same.

    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

    类似产品

    arrow View Full Interactive Product Selection Table
    Part# DAC DNR (dB) SNR (dB) DAC THD+N @ 1 kHz (-3dB) Product Description Price* (1000-4999)
    AD1933 110 110 96 192 kHz, 24-Bit CODEC w/ PLL $3.66
    AD1934 108 108 96 192 kHz, 24-Bit CODEC w/ PLL, I2C and SPI. $3.15
    AD1955 120 120 110 Multibit Sigma-Delta D/A w/ SACD Playback $6.86
    AD1853 116 117 104 24-bit 192 kHz Multibit Sigma-Delta DAC (Current Output) $7.59
    AD1852 114 114 104 Stereo, 24-bit 192 kHz Multibit Sigma-Delta D/A (Voltage Output) $5.57
    AD1854 113 112 97 Complete Single Chip Stereo Audio D/A $4.05
    AD1953 112 112 100 SigmaDSP 3 Ch, 26-/48-Bit Processing D/A $7.14
    AD1954 112 112 100 SigmaDSP 3 Ch, 26-/48-Bit Processing D/A $7.14
    AD1833A 110 110 95 Multi-Ch, 24-bit 192 kHz, Sigma-Delta D/A $3.98
    AD1958 109 108 96 Stereo, 24-bit 192 kHz Multibit Sigma-Delta D/A w/ PLL -
    AD1851 96 110 90 16-Bit, 16 3 FS PCM Audio DACs Dual 5V Supplies $4.71
    AD1857 94 - 90 Stereo, Single Supply 16/18/20-bit Sigma-Delta D/A -
    AD1859 94 - 88 Stereo, Single Supply 18-bit Integrated Sigma-Delta D/A $4.45
    AD1858 94 - 90 Stereo, Single Supply 16-bit Sigma-Delta D/A -
    AD1868 92 98 88 Single Supply Dual 18-Bit Audio DAC -
    AD1866 90 95 86 Single Supply Dual 16-Bit Audio DAC $10.57
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    * The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    ** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

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