1. Products
  2. Amplifiers
  3. Operational Amplifiers (Op Amps)
  4. Low Noise Op Amps (≤ 10nV/√Hz)
  5. ADA4855-3


Features and Benefits

  • Voltage feedback architecture
  • Rail-to-rail output swing: 0.1 V to 4.9 V
  • High speed amplifiers
    410 MHz, −3 dB bandwidth, G = 1
    210 MHz, −3 dB bandwidth, G = 2
    Slew rate: 870 V/μs
    53 MHz, 0.1 dB large signal flatness
    5.3 ns settling time to 0.1% with 2 V step
  • High input common-mode voltage range
    −VS − 0.2 V to +VS − 1 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

Product Details

The ADA4855-3 (triple) is a single-supply, rail-to-rail output operational amplifier. It provides excellent high speed performance with 410 MHz, −3 dB bandwidth and a slew rate of 870 V/μs. It has a wide input common-mode voltage range that extends from 0.2 V below ground to 1 V below the positive rail.In addition, the output voltage swings within 100 mV of either supply rail, making this rail-to-rail operational amplifier easy to use on single-supply voltages as low as 3.3 V.

The ADA4855-3 offers a typical low power of 7.8 mA per amplifier and is capable of delivering up to 57 mA of load current. It also features a power-down function for power sensitive applications that reduces the supply current down to 1 mA.

The ADA4855-3 is available in a 16-lead LFCSP and is designed to work over the extended industrial temperature range of −40°C to +105°C.


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  • Data Sheet, Rev. 0, 11/2008

    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.

    Evaluation Kits (1)

    Documentation & Resources

  • View All (19)
  • Data Sheets (1)
  • Application Notes (2)
  • User Guides (1)
  • Tutorials (12)
  • Webcasts (1)
  • Rarely Asked Questions (2)
  • Tutorials

    Tools & Simulations

    SPICE Models

    Design Tools

    Analog Filter Wizard

    Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.

    Analog Photodiode Wizard

    Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.

    VRMS/dBm/dBu/dBV calculators

    A utility to convert between standard units of power measurement and signal strength.

    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.

    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.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    ADA4855-3YCPZ-R7 Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm x 0.85mm w/ EP)
    ADA4855-3YCPZ-RL Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm x 0.85mm w/ EP)
    Wafer Fabrication Data

    PCN-PDN Information

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    Sample & Buy

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