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MAX2680, MAX2681, MAX2682
400MHz to 2.5GHz, Low-Noise, SiGe Downconverter Mixers


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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 200kB)
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The MAX2680/MAX2681/MAX2682 miniature, low-cost, low-noise downconverter mixers are designed for low-voltage operation and are ideal for use in portable communications equipment. Signals at the RF input port are mixed with signals at the local oscillator (LO) port using a double-balanced mixer. These downconverter mixers operate with RF input frequencies between 400MHz and 2500MHz, and downconvert to IF output frequencies between 10MHz and 500MHz.

The MAX2680/MAX2681/MAX2682 operate from a single +2.7V to +5.5V supply, allowing them to be powered directly from a 3-cell NiCd or a 1-cell Lithium battery. These devices offer a wide range of supply currents and input intercept (IIP3) levels to optimize system performance. Additionally, each device features a low-power shutdown mode in which it typically draws less than 0.1µA of supply current. Consult the Selector Guide for various combinations of IIP3 and supply current.

The MAX2680/MAX2681/MAX2682 are manufactured on a high-frequency, low-noise, advanced silicon-germanium process and are offered in the space-saving 6-pin SOT23 package.

An evaluation kit is available:  MAX2680EVKIT, MAX2681EVKIT, MAX2682EVKIT  

Key Features   Applications/Uses
  • 400MHz to 2.5GHz Operation
  • +2.7V to +5.5V Single-Supply Operation
  • Low Noise Figure: 6.3dB at 900MHz (MAX2680)
  • High Input Third-Order Intercept Point (IIP3 at 2450MHz)
    • -6.9dBm at 5.0mA (MAX2680)
    • +1.0dBm at 8.7mA (MAX2681)
    • +3.2dBm at 15.0mA (MAX2682)
  • <0.1µA Low-Power Shutdown Mode
  • Ultra-Small Surface-Mount Packaging

 
  • 400MHz/900MHz/2.4GHz ISM-Band Radios
  • Cell Phones/Cordless Phones
  • IEEE 802.11 and Wireless Data
  • Personal Communications Systems (PCS)
  • Wireless Local Loop (WLL)

    Key Specifications:  Downconverter Mixers
    Part Number RF Freq.
    (MHz)
    RF Freq.
    (MHz)
    Gain
    (dB)
    Input IP3
    (dBm)
    Noise Figure
    (dB)
    VCC
    (V)
    ISUPPLY
    (mA)
    Footprint
    (mm x mm)
    Package/Pins Price
    min max See Notes
    MAX2680  400 2500 11.6 -12.9 6.3 2.7 to 5.5 5 2.7 x 2.9
    SOT/6
    $0.92 @1k
    MAX2681  14.2 -6.1 7 8.7
    SOT/6
    $0.92 @1k
    MAX2682  14.7 -1.8 6.5 15
    SOT/6
    $0.92 @1k
    See All Downconverter Mixers (24)

    Diagram
    MAX2680, MAX2681, MAX2682: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-4786; Rev 2; 2003-10-22
    This page last modified: 2007-07-20


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