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3.5GHz Downconverter Mixers with Selectable LO Doubler

3.4 to 3.8GHz Downconverter Mixer Supports IFs of 100MHz to 1000MHz and Has Selectable LO Doubler

Product Details

Key Features

Simplified Block Diagram

Technical Docs

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Key Features

  • 3.4GHz to 3.8GHz RF Frequency Range
  • 100MHz to 400MHz IF Frequency Range (MAX2683)
  • 800MHz to 1000MHz IF Frequency Range (MAX2684)
  • Logic-Enabled LO Frequency Doubler
  • Conversion Gain
    • +6.7dB (MAX2683)
    • +1dB (MAX2684)
  • Programmable IIP3
    • +7dBm to +11dBm (MAX2683)
    • +8dBm to +12dBm (MAX2684)
  • +2.7V to +5.5V Single-Supply Operation
  • Ultra-Small 16-Pin TSSOP-EP Package

Applications/Uses

  • Digital Microwave Radios
  • Wireless Broadband Access
  • Wireless Local Loop (WLL)

Description

The MAX2683/MAX2684 are super-high-performance, low-cost downconverter mixers intended for wireless local loop (WLL) and digital microwave radio (DMR) applications in the 3.4GHz to 3.8GHz frequency band. The MAX2683 is optimized for downconversion to IF frequencies between 100MHz and 400MHz, and allows both high-side and low-side local oscillator (LO) injection. The MAX2684 is optimized for IF frequencies between 800MHz and 1000MHz, and allows low-side LO injection. A logic-level control enables an internal frequency doubler on both devices, allowing the external LO source to run at full or half frequency. An internal LO filter reduces LO harmonics and spurious mixing.

The MAX2683/MAX2684 feature an externally adjustable bias control, set with a single resistor, that lets the user trade supply current for linearity to optimize system performance. These devices use a double-balanced Gilbert-cell architecture with single-ended RF and LO inputs and differential open-collector IF output ports. Differential IF ports provide a wideband, flexible interface for either single-ended or differential applications.

The MAX2683/MAX2684 operate from a single +2.7V to +5.5V supply. The devices are packaged in an ultra-small 16-pin TSSOP-EP package with an exposed paddle for optimum performance at 3.5GHz.

Simplified Block Diagram

MAX2683, MAX2684: Typical Operating Circuit MAX2683, MAX2684: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .

Sampling:
Selecting the Sample button above 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.