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AD8398A:  Single Port VDSL2 Line Driver with Shutdown

Product Details

The AD8398A comprises two high speed, voltage feedback operational amplifiers. When configured as a differential line driver, the AD8398A is an ideal choice for ADSL2+, VDSL2, and power line communications (PLC) applications. It has high output current, high bandwidth, and fast slew rate, combined with exceptional multitone power ratio (MTPR) and common-mode stability. The AD8398A is available in a thermally enhanced 4 mm × 4 mm, 16-lead LFCSP.

The AD8398A incorporates power management functionality via two CMOS-compatible control pins, PD0 and PD1. These pins select one of four operating modes: full power, medium power, low power, or complete power-down. In the power-down mode, the quiescent current drops to 0.7 mA.

The AD8398A operates in the extended industrial temperature range of −40°C to +85°C.


  • ADSL2+/VDSL2 CO/CPE line drivers
  • PLC line drivers
  • Consumer xDSL modems
  • Twisted pair line drivers


  • Voltage feedback
  • Wide output swing
    18.4 V p-p differential, RLOAD, DIFF = 20 Ω from 12 V supply
  • High output current
    Linear output current of 450 mA peak
  • Low distortion
    −65 dBc for Profile 8b @
    20.4 dBm
    −55 dBc for Profile 17a @
    14.5 dBm
  • High speed
    85 MHz bandwidth (AV DIFF = 5)

Functional Block Diagram for AD8398A


For more information on the AD8398A, contact the Broadband Group.


Title Content Type File Type
AD8398A: Single Port VDSL2 Line Driver with Shutdown Data Sheet (Rev C, 03/2010) (pdf, 96 kB) Data Sheets PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

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