1. Products
  2. Amplifiers
  3. Operational Amplifiers (Op Amps)
  4. High Speed Op Amps (Bandwidth ≥ 50MHz)
  5. ADA4857-2


Overview

Features and Benefits

  • High speed
    850 MHz, -3 dB bandwidth (G = +1, RL = 1kΩ), LFSCP
    750 MHz, −3 dB bandwidth (G = +1, RL = 1 kΩ, SOIC)
    2800 V/µs slew rate
  • Low distortion:
    -88 dBc @ 10 MHz (G = +1, RL = 1kΩ)
  • Low power: 5 mA/amplifier @ 10 V
  • Low noise: 4.4 nV/√Hz
  • Wide supply voltage range: 5 V to 10 V
  • Power-down feature
  • Available in 3 mm × 3 mm 8-lead LFCSP (single), 8-lead SOIC (single), and 4 mm × 4 mm 16-lead LFCSP (dual)

Product Details

The ADA4857 is a unity gain stable, high speed, voltage feedback amplifier with low distortion, low noise, and high slew rate. With a spurious-free dynamic range (SFDR) of −88 dBc @ 10 MHz, the ADA4857 is an ideal solution for a variety of applications including ultrasounds, ATE, active filters, and ADC drivers. The Analog Devices, Inc., proprietary next-generation XFCB process and innovative architecture enables such high performance amplifiers.

The ADA4857 has 850 MHz bandwidth, 2800 V/μs slew rate, and settles to 0.1% in 15 ns. With a wide supply voltage range (5 V to 10 V), the ADA4857 is an ideal candidate for systems that require high dynamic range, precision, and speed.

The ADA4857-1 amplifier is available in a 3 mm × 3 mm, 8-lead LFCSP and a standard 8-lead SOIC. The ADA4857-2 is available in a 4 mm × 4 mm, 16-lead LFSCP. The LFCSP features an exposed paddle that provides a low thermal resistance path to the printed circuit board (PCB). This path enables more efficient heat transfer and increases reliability. The ADA4857 works over the extended industrial temperature range (−40°C to +125°C).

Applications

  • Instrumentation
  • IF and baseband amplifiers
  • Active filters
  • ADC drivers
  • DAC buffers

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 (23)
  • Data Sheet (1)
  • Application Note (3)
  • User Guide (1)
  • Tutorial (12)
  • Product Selection Guide (1)
  • Webcast (1)
  • Rarely Asked Question (4)
  • Tutorial

    Tools & Simulations

    LTspice

    LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

    LTspice

    Models for the following parts are available in LTspice:

    ADA4857

    Precision ADC Driver Tool

    The Precision ADC Driver Tool is a web application that simulates the performance of precision ADC and driver combinations. Potential issues with driver selection, kickback settling, and distortion are flagged, and design tradeoffs can be quickly evaluated. Simulations and calculations include system noise, distortion, and settling of the ADC input

    Precision ADC Driver Tool

    SPICE Model

    Design Tool

    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
    ADA4857-2YCPZ-R7 Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm w/ EP)
    ADA4857-2YCPZ-RL Material Declaration Reliability Data 16-Lead LFCSP (4mm x 4mm w/ EP)
    Wafer Fabrication Data

    PCN-PDN Information

    Select a model from the dropdown below to subscribe to PCN/PDN notifications and view past notifications as well.

    Sample & Buy


    Ordering FAQs


    See our Ordering FAQs for answers to questions about online orders, payment options and more.

     

    Buy Now Pricing


    (**) Displayed Buy Now Price and Price Range is based on small quantity orders.

     

    List Pricing


    (*)The 1Ku 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. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

     

    Lead Times


    Please see the latest communication from our CCO regarding lead times.

     

    Sampling


    A Sample link will be shown above, next to the part, only for parts that are included in our sample program. Selecting the Sample button will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.


    Price Table Help

     

    Evaluation Boards

    Pricing displayed is based on 1-piece.

    Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

    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.