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AD815:  High Output Current Differential Driver

Product Details

The AD815 consists of two high speed amplifiers capable of supplying a minimum of 500 mA. They are typically configured as a differential driver enabling an output signal of 40 V p-p on ±15 V supplies. This can be increased further with the use of a coupling transformer with a greater than 1:1 turns ratio. The low harmonic distortion of -66 dB @ 1 MHz into 200 W combined with the wide bandwidth and high current drive make the differential driver ideal for communication applications such as subscriber line interfaces for ADSL, HDSL and VDSL.

The AD815 differential slew rate of 900 V/µs and high load drive are suitable for fast dynamic control of coils or transformers, and the video performance of 0.05% and 0.45° differential gain and phase into a load of 25 W enable up to 12 back-terminated loads to be driven.

The AD815 is available in a 24-pin SOIC (RB) and is rated over the industrial temperature range (-40°C to +85°C).

The 24-lead SOIC (RB) is capable of driving 26 dBm for full rate ADSL with proper heat sinking.


  • Flexible Configuration
    Differential Input and Output Driver or Two Single-Ended Drivers
  • Industrial Temperature Range
  • Low Distortion
    -66 dB @ 1 MHz THD, RL =
    200 Ω, VOUT = 40 V p-p
    0.05% and 0.45° Differential Gain and
    Phase, RL = 25 Ω (6 Back-Terminated
    Video Loads)
  • High Output Power
    Thermally Enhanced SOIC
    400 mA Minimum Output Drive/Amp,
    RL = 10 Ω
  • High Speed
    120 MHz Bandwidth (-3 dB)
    900 V/µs Differential Slew Rate
    70 ns Settling Time to 0.1%
  • Thermal Shutdown

Functional Block Diagram for AD815


Title Content Type File Type
AD815: High Output Current Differential Driver Data Sheet  (Rev C, 04/2005) (pdf, 368 kB) Data Sheets PDF
AN-692: Universal Precision Op Amp Evaluation Board  (pdf, 621 kB) Application Notes PDF
AN-649: Using the Analog Devices Active Filter Design Tool  (pdf, 5301 kB) Application Notes PDF
MT-057: High Speed Current Feedback Op Amps  (pdf, 78 kB) Tutorials PDF
MT-051: Current Feedback Op Amp Noise Considerations  (pdf, 36 kB) Tutorials PDF
MT-034: Current Feedback (CFB) Op Amps  (pdf, 130 kB) Tutorials PDF
MT-059: Compensating for the Effects of Input Capacitance on VFB and CFB Op Amps Used in Current-to-Voltage Converters  (pdf, 69 kB) Tutorials PDF
A Stress-Free Method for Choosing High-Speed Op Amps
A decision-tree approach to making the critical decision about high-speed op amp selection, including a look at some helpful tools.
Webcasts WEBCAST
Two-Stage Current-Feedback Amplifier
(Analog Dialogue, Vol. 29, No. 2, 1995)
Analog Dialogue HTML
Current Feedback Amplifiers Analog Dialogue HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
AD815 SPICE Macro-Model SPICE Models HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

AD815 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD815ARBZ-24 Status: Production 24 ld SOIC_W_BAT 24 Ind Tube, 31 $6.52 $5.89 Y  Material Info Notify Me Purchase Sample
AD815ARBZ-24-REEL Status: Production 24 ld SOIC_W_BAT 24 Ind Reel, 1000 - $5.89 Y  Material Info Notify Me Purchase
Price Table Help

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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