Overview

Features and Benefits

  • Integrated charge pump
    Supply range: 3 V to 5.5 V
    Output range: −3.3 V to −1.8 V
    50 mA maximum output current at −3 V for external use
  • High speed amplifiers
    −3 dB bandwidth: 195 MHz
    Slew rate: 740 V/μs
    0.1 dB gain flatness: 60 MHz
    0.1% settling time: 20 ns
  • Low power
    Total quiescent current: 38 mA
    Power-down feature
  • High input common-mode voltage range
    −1.8 V to +3.8 V at +5 V supply
  • Current feedback architecture
  • Differential gain error: 0.01%
  • Differential phase error: 0.02°
  • Available in 16-lead LFCSP

Product Details

The ADA4859-3 (triple) is a single-supply, high speed current feedback amplifier with an integrated charge pump that eliminates the need for negative supplies in order to output negative voltages or output a 0 V level for video applications. The 195 MHz, large signal −3 dB bandwidth at a fixed gain of 2, as well as the 740 V/μs slew rate, make this amplifier ideal for high resolution professional and consumer video applications. The amplifier also has a wide input common-mode voltage range that extends from 1.8 V below ground to 1.2 V below the positive rail at 5 V supply.

This triple video amplifier is designed to operate on supply voltages of 3.3 V to 5 V, using only 38 mA total quiescent current, including the charge pump. To further reduce the power consumption, it is equipped with a power-down feature that lowers the total supply current to as low as 2 mA when the amplifier is not being used. Even in power-down mode, the charge pump can be used to power external components. The maximum output current for external use is 50 mA at −3 V.

The ADA4858-3 is available in a 16-lead LFCSP, and it is designed to work over the industrial temperature range of −40°C to +105°C.

Applications

  • Professional video
  • Consumer video
  • Imaging
  • Active filters
  • 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.

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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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    Evaluation Boards Pricing displayed is based on 1-piece.
    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.