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MAX2642, MAX2643
900MHz SiGe, High-Variable IP3, Low-Noise Amplifier

Industry's Smallest SiGe LNA Offers Adjustable IP3 and Gain-Step Functions


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Description
FULL DATA SHEET (PDF, 248kB)
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The MAX2642/MAX2643 low-cost, high third-order intercept point (IP3), low-noise amplifiers (LNAs) are designed for applications in cellular, ISM, SMR, and PMR systems. They feature a programmable bias, allowing the IP3 and supply current to be optimized for specific applications. These LNAs provide up to 0dBm input IP3 while maintaining a low noise figure of 1.3dB.

The gain for these devices is typically 17dB. The MAX2642 also features a 13dB attenuation step, which extends the LNA's dynamic range. Both devices feature a shutdown mode that minimizes power consumption. On-chip output matching saves board space by reducing the number of external components.

The MAX2642/MAX2643 are designed on a low-noise, advanced silicon-germanium (SiGe) process technology. They operate from a +2.7V to +5.5V single supply and are available in the ultra-small 6-pin SC70 package.

Key Features   Applications/Uses
  • Wide Frequency Range: 800MHz to 1000MHz
  • High Output IP3 and Adjustable
    • +17dBm at 5.3mA
    • +7dBm at 2.8mA
  • Low Noise Figure: 1.3dB at 900MHz
  • 13dB Attenuation Step (MAX2642)
  • On-Chip Output Matching
  • Low-Power Shutdown Mode
  • +2.7V to +5.5V Single-Supply Operation
  • Ultra-Small SC70-6 Package

 
  • 800MHz/900MHz Cellular Phones
  • 868MHz/900MHz ISM-Band Wireless Data
  • 900MHz Cordless Phones
  • PMR/SMR/LMR

    Key Specifications:   Low-Noise Amplifiers
    Part Number Solutions Applications Frequency Range (MHz) Noise Figure (dB) Gain (dB) Input IP3 (dBm) Supply Current (mA) Footprint (mm x mm) RoHS Available Package Smallest Available Package (max w/pins) (mm2) Price*
    MAX2642  900MHz
    Cellular
    Cordless
    Cellular
    Cordless
    ISM
    800 to 1000 1.35 16.7  -  5.3 2.0 x 2.1 Yes SC-70/6 5 $0.89 @ 1k
    MAX2643  0 2.8 to 5.3  
    See All Low-Noise Amplifiers (23)
    Notes:
    *This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    Diagram
    MAX2642, MAX2643: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-1682; Rev 0; 2000-06-02
    This page last modified: 2007-07-23




             



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