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ADLD8404:  Ultra Low Power, Adaptive Linear Power™, Dual-Port ADSL2+/VDSL2 Line Driver

Product Status:Not Recommended for New Designs
Data
Sheet
ADLD8404 Data Sheet Rev PrA, 08/2010 (pdf 87kB)

Product Details

Product Status:Not Recommended for New Designs
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The ADLD8404 is comprised of two differential, high output current, low power consumption operational amplifiers. It is particularly well suited for the CO & FTTX driver interface in digital subscriber line systems, such as ADSL2+ and VDSL2. The driver can deliver 20.4 dBm to a line while compensating for losses due to hybrid insertion and back-termination resistors. ADLD8404 uses second-generation Adaptive Linear Power (Class H) architecture to achieve unprecedented power efficiency while using a single power supply and three external capacitors. Further functionality permits the shutdown of pumps for enhanced power savings for line power < 14.5 dBm. This yields the smallest PCB footprint and lowest total cost of ownership.

The low power consumption, high output current, high output voltage swing, and robust thermal packaging enable the ADLD8404 to be the CO or FTTX line driver in ADSL2+ and VDSL2 systems.

The ADLD8404 is available in a 4 mm × 4 mm 24-lead LFCSP.

Applications

  • ADSL2+/VDSL2 CO line drivers
  • ADSL2+/VDSL2 FTTX line drivers

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FEATURES and BENEFITS

  • Two differential DSL channels comprised of current feedback, high output current amplifiers with integrated resistors and biasing network
  • Ideal for use as ADSL2+/VDSL2 dual-channel Central Office (CO) & FTTX (Remote Cabinet) line drivers
  • High output voltage and current drive
    40 V p-p differential output
        voltage
  • Low cost protection components enable K20 & GR1089 compliance
  • Low power consumption using Class H Technology
  • Single +14V supply operation 20.4 dBm line power, 1:1.4 transformer
  • 780 mW/channel total power dissipation while driving 20.4 dBm (includes 110 mW line power)
  • 475 mW/channel total power dissipation while driving 14.5 dBm (includes line power)
  • Low distortion
    -65 dBc typical MTPR @
        20.4 dBm, 26 kHz to
        2.2 MHz
    -55 dBc typical MTPR @
        14.5 dBm, 5.2 MHz to
        17.6 MHz
  • Protected by US Patent 6,636,103 “Amplifier system with on-demand power supply boost”, and patents pending

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Of Note...

This part is not yet released to manufacturing. For samples and more information please contact the Broadband Products Group.

Documentation

Title Content Type File Type
ADLD8404: Ultra Low Power, Adaptive Linear Power™, Dual-Port ADSL2+/VDSL2 Line Driver Preliminary Data Sheet (Rev PrA, 08/2010) (pdf, 87 kB) Data Sheets PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

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