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AD8390A:  Low Power, High Output Current Differential Amplifier

Product Details

The AD8390A is a high output current, low power consumption differential amplifier. It is particularly well suited for the central office (CO) driver interface in digital subscriber line systems such as ADSL and ADSL2+. In full bias operation, the driver delivers 20.4 dBm output power into low resistance loads while compensating for hybrid and transformer insertion losses and back termination resistors.

The AD8390A is available in a thermally enhanced LFCSP package (16-lead LFCSP). Significant control and flexibility in bias current have been designed into the AD8390A.

Four power modes are selectable via two digital inputs, PD0 and PD1, providing three levels of driver bias and one power-down state. In addition, the IADJ pin is available for fine quiescent current trimming to tailor the performance of the AD8390A.

The low power consumption, high output current, high output voltage swing, and robust thermal packaging enable the AD8390A to be used as the central office line driver in ADSL, ADSL2+, and proprietary xDSL systems, as well as in other high current applications requiring a differential amplifier.


  • ADSL/ADSL2+ CO and CPE line drivers
  • xDSL line drivers
  • High current differential amplifiers


  • Voltage feedback amplifier
    Ideal for ADSL and ADSL2+ central office (CO) and customer premises equipment
    (CPE) applications Enables high current differential applications
  • Low power operation
    Single or dual-supply operation from
    10 V (± 5 V) up to 24 V (± 12 V)
    5.5 mA total quiescent supply current for full power ADSL and ADSL2+ CO applications
    Adjustable supply current to minimize power consumption
  • High output voltage and current drive
    400 mA peak output drive current
    44 V p-p differential output voltage
  • Low distortion
    −70 dBc MTPR, 26 kHz to 1.1 MHz
    −65 dBc MTPR, 1.1 MHz to 2.2 MHz
  • High speed: 260 V/μs differential slew rate

Functional Block Diagram for AD8390A


For more information about the AD8390A, please contact the Broadband Products Group. Please include your name, address, company name and application.


Title Content Type File Type
AD8390A: Low Power, High Output Current Differential Amplifier Data Sheet (Rev B, 02/2013) (pdf, 97 kB) Data Sheets PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

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AD8390A Model Options
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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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