AD8366
Info : RECOMMENDED FOR NEW DESIGNS
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AD8366

DC to 600 MHz, Dual-Digital Variable Gain Amplifiers

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Features
  • Matched pair of differential, digitally controlled VGAs
  • Gain range: 4.5 dB to 20.25 dB
  • 0.25 dB gain step size
  • Operating frequency
    • DC to 150 MHz (2 V p-p)
    • 3 dB bandwidth: 600 MHz
  • Noise figure (NF)
    • 11.4 dB at 10 MHz at maximum gain
    • 18 dB at 10 MHz at minimum gain
  • OIP3: 45 dBm at 10 MHz
  • HD2/HD3
    • Better than −90 dBc for 2 V p-p output at 10 MHz at maximum gain
  • Differential input and output
  • Adjustable output common-mode
  • Optional dc output offset correction
  • Serial/parallel mode gain control
  • Power-down feature
  • Single 5 V supply operation
Additional Details
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The AD8366 is a matched pair of fully differential, low noise and low distortion, digitally programmable variable gain amplifiers (VGAs). The gain of each amplifier can be programmed separately or simultaneously over a range of 4.5 dB to 20.25 dB in steps of 0.25 dB. The amplifier offers flat frequency performance from dc to 70 MHz, independent of gain code.

The AD8366 offers excellent spurious-free dynamic range, suitable for driving high resolution analog-to-digital converters (ADCs). The NF at maximum gain is 11.4 dB at 10 MHz and increases ~2 dB for every 4 dB decrease in gain. Over the entire gain range, the HD3/HD2 are better than −90 dBc for 2 V p-p at the output at 10 MHz into 200 Ω. The two-tone intermodulation distortion of −90 dBc into 200 Ω translates to an OIP3 of 45 dBm (38 dBVrms). The differential input impedance of 200 Ω provides a well-defined termination. The differential output has a low impedance of ~25 Ω.

The output common-mode voltage defaults to VPOS/2 but can be programmed via the VCMA and VCMB pins over a range of voltages. The input common-mode voltage also defaults to VPOS/2 but can be driven down to 1.5 V. A built-in, dc offset compensation loop can be used to eliminate dc offsets from prior stages in the signal chain. This loop can also be disabled if dc-coupled operation is desired.

The digital interface allows for parallel or serial mode gain programming. The AD8366 operates from a 4.75 V to 5.25 V supply and consumes typically 180 mA. When disabled, the part consumes roughly 3 mA. The AD8366 is fabricated using Analog Devices, Inc., advanced silicon-germanium bipolar process, and it is available in a 32-lead exposed paddle LFCSP package. Performance is specified over the −40°C to +85°C temperature range.

Applications

  • Baseband I/Q receivers
  • Diversity receivers
  • Wideband ADC drivers
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    Documentation
    Software & Part Ecosystem

    Software & Part Ecosystem

    Evaluation Kit

    Evaluation Kits 2

    EVAL-AD8366

    AD8366 Evaluation Board

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    EVAL-AD8366

    AD8366 Evaluation Board

    AD8366 Evaluation Board

    Product Detail

    AD8366-EVALZ is a 4-layer, FR4-based evaluation board designed to allow easy evaluation of all features of the AD8366. The evaluation board integrates switches for ease of gain settings, bypassable transformers to allow single ended or differential inputs and output, and the evaluation board requires only a single supply within the range of 4.75 V to 5.25 V.


    reference details image

    AD-FMCOMMS1-EBZ

    FPGA Mezzanine Card for Wireless Communications

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    AD-FMCOMMS1-EBZ

    FPGA Mezzanine Card for Wireless Communications

    FPGA Mezzanine Card for Wireless Communications

    Features and Benefits

    • Includes schematics, layout, BOM, Gerber files, HDL, Linux® drivers, IIO Oscilloscope, VisualANALOG
    • FMC-compatible form factor
    • Powered from FMC connector
    • Provides one channel of ADC and one channel of DAC with full synchronization capabilities

    Product Detail

    This board is no longer available for ordering.

    The AD-FMCOMMS1-EBZ high-speed analog module is designed to showcase the latest generation high-speed data converters. The AD-FMCOMMS1-EBZ provides the analog front-end for a wide range of compute-intensive FPGA-based radio applications.

    The AD-FMCOMMS1-EBZ is an analog front end hardware platform that addresses a broad range of research, academic, industrial and defense applications. The AD-FMCOMMS1-EBZ enables RF applications from 400MHz to 4 GHz. The module is customizable to a wide range of frequencies by software without any hardware changes, providing options for GPS or IEEE 1588 Synchronization, and MIMO configurations.

    When combined with the Xilinx ZYNQ® Software-Defined Radio Kit, AD-FMCOMMS1-EBZ enables a variety of wireless communications functions at the physical layer, from baseband to RF. With up to 4 GB of flash storage space, 512 MB of RAM, Gigabit Ethernet interface (depending on the base platform) and a Linux image built specifically for the AD-FMCOMMS1-EBZ, you can get everything you need for a easy out of the box experience. The platform offers enough flexibility for many applications, and supports streaming data, and standard web interfaces to analyze transmitted RF data.

    Applications

    • Electronic test and measurement equipment
    • General-purpose software radios
    • Radar systems
    • Ultra wideband satellite receivers
    • Point to point communication systems
    Tools & Simulations

    Tools & Simulations 4

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