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ADA4856-3:  Single-Supply, High Speed, Fixed G = +2, Rail-to-Rail Output Video Amplifier

Product Details

The ADA4856-3 (triple) is a fixed gain of +2, single-supply, rail-to-rail output video amplifier. It provides excellent video performance with 225 MHz, −3 dB bandwidth, 800 V/μs slew rate, and 74 MHz, 0.1 dB flatness into a 150 Ω load. It has a wide input common-mode voltage range that extends 0.2 V below ground and 1 V below the positive rail. In addition, the output voltage swings within 200 mV of either supply, making this video amplifier easy to use on single-supply voltages as low as 3.3 V.

The ADA4856-3 offers a typical low power of 7.8 mA per amplifier, while being capable of delivering up to 52 mA of load current. It also features a power-down function for power sensitive applications that reduces the supply current to 1 mA.

The ADA4856-3 is available in a 16-lead LFCSP and is designed to work over the extended industrial temperature range of −40°C to +105°C.


  • Professional video
  • Consumer video
  • Imaging
  • Instrumentation
  • Base stations
  • Active filters
  • Buffers
  • Data Sheet, Rev. A, 01/2009


    • Voltage feedback architecture
    • High speed amplifier
      -3 dB bandwidth: 225 MHz
      0.1 dB flatness at 2 V p-p: 74 MHz
      Slew rate: 800 V/µs
      Settling time to 0.1% with 2 V step: 5 ns
    • High input common-mode voltage range
      -VS − 0.2 V to +VS − 1 V
    • Rail-to-rail output swing: 0.1 V to 4.9 V
    • Supply range: 3 V to 5.5 V
    • Differential gain error: 0.01%
    • Differential phase error: 0.01°
    • Low power
      7.8 mA/amplifier typical supply current
      Power-down feature
    • Available in 16-lead LFCSP

    Functional Block Diagram for ADA4856-3

    ADA4856-3 Diagram
    Functional Block Diagram for ADA4856-3


    Title Content Type File Type
    ADA4856-3: High Speed, Single-Supply, Fixed G = +2, Rail-to-Rail Output Video Amplifier Data Sheet (Rev B, 03/2013) (pdf, 266 kB) Data Sheets PDF
    AN-581: Biasing and Decoupling Op Amps in Single Supply Applications  (pdf, 166 kB) Application Notes PDF
    AN-402: Replacing Output Clamping Op Amps with Input Clamping Amps  (pdf, 55 kB)
    So far most clamping amplifiers have relied upon an output clamping architecture and are called output clamp amps (OCAs). A new architecture called an input clamp amp (ICA) offers superior clamping accuracy and lower distortion.
    Application Notes PDF
    AN-417: Fast Rail-to-Rail Operational Amplifiers Ease Design Constraints in Low Voltage High Speed Systems  (pdf, 228 kB)
    Movement towards lower power supply voltages is driven by the demand that systems consume less and less power coupled with the desire to reduce the number of power supply voltages in the system. The following applications are discussed: Single-Ended and Differential Input ADC Input Circuits, Video Line Driver, Active Filter, HDSL Transceiver, and Transformer Drive Circuits.
    Application Notes PDF
    MT-060: Choosing Between Voltage Feedback and Current Feedback Op Amps  (pdf, 62 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
    MT-058: Effects of Feedback Capacitance on VFB and CFB Op Amps  (pdf, 66 kB) Tutorials PDF
    MT-056: High Speed Voltage Feedback Op Amps  (pdf, 109 kB) Tutorials PDF
    MT-053: Op Amp Distortion: HD, THD, THD + N, IMD, SFDR, MTPR  (pdf, 104 kB) Tutorials PDF
    MT-052: Op Amp Noise Figure: Don't Be Misled  (pdf, 60 kB) Tutorials PDF
    MT-050: Op Amp Total Output Noise Calculations for Second-Order System  (pdf, 38 kB) Tutorials PDF
    MT-049: Op Amp Total Output Noise Calculations for Single-Pole System  (pdf, 40 kB) Tutorials PDF
    MT-048: Op Amp Noise Relationships: 1/f Noise, RMS Noise, and Equivalent Noise Bandwidth  (pdf, 81 kB) Tutorials PDF
    MT-047: Op Amp Noise  (pdf, 72 kB) Tutorials PDF
    MT-033: Voltage Feedback Op Amp Gain and Bandwidth  (pdf, 251 kB) Tutorials PDF
    MT-032: Ideal Voltage Feedback (VFB) Op Amp  (pdf, 65 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
    UG-115: Universal Evaluation Board for Triple, High Speed Op Amps Offered in 16-Lead, 4 mm × 4 mm LFCSP Packages  (pdf, 171 kB) User Guides PDF
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    dBm/dBu/dBv Calculator
    This calculator converts between standard units of power measurement and signal strength.
    Utilities and Conversions HTML
    Power Dissipation vs Die Temp
    This tool estimates die temperature and power dissipation based on the supply voltages, ambient temperature, load characteristics, and package thermal data.
    Utilities and Conversions HTML
    This tool will help with the selection, evaluation and troubleshooting of voltage feedback Op-Amps. It uses typical data to model the behavior of a selected amplifier. It allows a user to select an amplifier, configure a circuit, apply a signal and evaluate the performance. It is useful for checking an amplifier's spec's such as Bandwidth, Slew Rate, Input/Output Range, Gain Error, Load Current, Stability Issues and DC Errors in a given circuit.
    ADIsim Design/Simulation Tools HTML
    OpAmp Stability
    An applet for demonstrating stability effects in opamp buffers.
    Design Calculators HTML

    Evaluation Kits & Symbols & Footprints

    Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

    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.

    SampleSample & Buy

    Price, packaging, availability

    ADA4856-3 Model Options
    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.

    ADA4856-3 Evaluation Board
    Model Description Price RoHS View PCN/ PDN Check Inventory/
    ADA4856-3YCP-EBZ Status: Production 16-Lead LFCSP Bare Evaluation Board $18.26 Yes -
    ADA4856-3YCPZ-R7 Status: Production 16-Lead LFCSP - Yes -

    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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