Features and Benefits

  • Dual current feedback amplifier with 250 mA drive
  • Wide output swing
    18.8 V p-p differential, (50 Ω RLOAD from 12 V supply
    20.6 V p-p differential, (100 Ω RLOAD from 12 V supply
  • High output current
    Linear output current of 250 mA peak
  • Low distortion
    -100 dBc typical at 200 kHz
    -76 dBc typical at 4 MHz
    -66 dBc typical at 8 MHz
    -56 dBc typical at 16 MHz
  • Low quiescent current
    7.5 mA per amplifier
  • High speed
    250 MHz gain bandwidth (AV DIFF = 2, -3 dB)
    900 V/µs slew rate (RLOAD = 50 Ω)

Product Details

The AD8398 is comprised of two high-speed current feedback operational amplifiers. The high output current, high bandwidth and fast slew rate make it particularly well suited as the line driver in VDSL and VDSL2 applications. The AD8398 is available in a thermally enhanced 4 mm × 4 mm, 16-lead LFCSP.

The AD8398 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, and complete power down. In the power down mode, the quiescent current drops to 0.65 mA/amplifier

The AD8398 operates in the extended industrial temperature range of -40°C to +85°C.

Product Categories

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.

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

Sample & Buy

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