ADA4950-2
Info : RECOMMENDED FOR NEW DESIGNS
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ADA4950-2

Low Power Selectable Gain Differential ADC Driver, G = 1, 2, 3

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price Starting From $6.23
Features
  • High performance at low power
  • High speed
    -3 dB bandwidth of 750 MHz, G = 1
    0.1 dB flatness to 210 MHz, VOUT, dm = 2 V p-p, RL, dm = 200 Ω
    Slew rate: 2900 V/µs, 25% to 75%
    Fast 0.1% settling time of 9 ns
  • Low power: 9.5 mA per amplifier
  • Low harmonic distortion
    108 dB SFDR @ 10 MHz
    98 dB SFDR @ 20 MHz
  • Low output voltage noise: 9.2 nV/√Hz, G = 1, RTO
  • ±0.2 mV typical input offset voltage
  • Selectable differential gains of 1, 2, and 3
  • Differential-to-differential or single-ended-to-differential operation
  • Adjustable output common-mode voltage
  • Input common-mode range shifted down by one VBE
  • Wide supply range: +3 V to ±5 V
  • Available in 16-lead and 24-lead LFCSP packages
Additional Details
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The ADA4950-1/ADA4950-2 are gain-selectable versions of the ADA4932-1/ADA4932-2 with on-chip feedback and gain resistors It is an ideal choice for driving high performance ADCs as a single-ended-to-differential or differential-to-differential amplifier. The output common-mode voltage is user adjustable by means of an internal common-mode feedback loop, allowing the ADA4950-x output to match the input of the ADC. The internal feedback loop also provides exceptional output balance as well as suppression of even-order harmonic distortion products.

Differential gain configurations of 1, 2, and 3 are easily realized with internal feedback networks that are connected externally to set the closed-loop gain of the amplifier.

The ADA4950-x is fabricated using the Analog Devices, Inc., proprietary silicon-germanium (SiGe) complementary bipolar process, enabling it to achieve low levels of distortion and noise at low power consumption. The low offset and excellent dynamic performance of the ADA4950-x make it well suited for a wide variety of data acquisition and signal processing applications.

The ADA4950-x is available in a Pb-free, 3 mm × 3 mm, 16-lead LFCSP (ADA4950-1, single) or a Pb-free 4 mm × 4 mm, 24-lead LFCSP (ADA4950-2, dual). The pinout has been optimized to facilitate PCB layout and minimize distortion. The ADA4950-1/ADA4950-2 are specified to operate over the -40°C to +105°C temperature range; both operate on supplies from +3 V to ±5 V.

Applications

  • ADC drivers
  • Single-ended-to-differential converters
  • IF and baseband gain blocks
  • Differential buffers
  • Line drivers
  • Part Models 2
    1ku List Price Starting From $6.23

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    Documentation

    Documentation

    Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
    ADA4950-2YCPZ-R7
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    ADA4950-2YCPZ-RL
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    Part Models

    Product Lifecycle

    PCN

    May 22, 2012

    - 12_0063

    Conversion of Select Sizes of LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to ASE-Korea.

    Filter by Model

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    Part Models

    Product Lifecycle

    PCN

    May 22, 2012

    - 12_0063

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    Conversion of Select Sizes of LFCSP Package Outlines from Punch to Sawn and Transfer of Assembly Site to ASE-Korea.

    Software & Part Ecosystem

    Software & Part Ecosystem

    Evaluation Kit

    Evaluation Kits 1

    EVAL-ADA4950-2

    ADA4950-2 Evaluation Board

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    EVAL-ADA4950-2

    ADA4950-2 Evaluation Board

    ADA4950-2 Evaluation Board

    Product Detail

    These evaluation boards are designed to help users evaluate the ADA4950-2. The evaluation board is a BARE BOARD. There are no components or amplifiers soldered to the board. These parts must be obtained separately from the table below or on the product page. Free samples may also be requested. The unpopulated board enables users to quickly customize and prototype a variety of op amp circuits, which minimizes risk and reduces time to market.


    The User Guide contains all the required documentation to build the board, including schematics, assembly drawing, and Bill of Materials
    Tools & Simulations

    Tools & Simulations 2

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