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MAX2371, MAX2373
LNAs with Step Attenuator and VGA


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Description
FULL DATA SHEET (PDF, 152kB)
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The MAX2371/MAX2373 wideband low-noise amplifier (LNA) ICs are designed for direct conversion receiver (DCR) or very low intermediate frequency (VLIF) receiver applications. They contain single-channel, single-ended LNAs with switchable attenuator and automatic gain control (AGC) intended as a low-noise gain stage. These devices provide high gain-control range (typically 60dB) at radio frequency (RF) with excellent noise and reverse isolation characteristics.

The MAX2371/MAX2373 can work over the frequency range from 100MHz to 1GHz. In practice, only a narrow band is needed in each application, so different matching circuits can be applied. The devices are dynamically configured through the digital/analog control pins to select either maximum gain and low noise figure or power-saving mode. In addition, the MAX2371/MAX2373 feature high/low-current modes, high/low attenuation modes, linearly controlled gain states, and shutdown mode.

Key Features   Applications/Uses
  • Low Noise Figure (1.8dB typical)
  • High Small-Signal Gain (15dB Nominal)
  • Wide Frequency Range of Operation (100MHz to 1GHz)
  • 20dB Step Attenuator
  • 45dB AGC Range Excluding Step Attenuator
  • 2.65V to 3.3V Single-Supply Operation
  • Shutdown Mode
  • 3.5mA Supply Current, Adjustable Down to 2.5mA
  • 40dB Reverse Isolation

     
  • Direct Conversion Receiver (DCR)
  • Very Low IF Receiver

    Key Specifications:   Low-Noise Amplifiers
    Part Number Solutions Applications Frequency Range (MHz) Noise Figure (dB) Gain (dB) Supply Current (mA) Footprint (mm x mm) RoHS Available Package Smallest Available Package (max w/pins) (mm2) Price**
    MAX2371  400MHz
    900MHz
    Cellular
    Cordless
    Cellular
    Cordless
    ISM
    100 to 1000 1.8 15 2.5 to 3.5 3.0 x 3.0 Yes QFN/12
    THIN QFN/12
    10 $1.32 @ 1k
    MAX2373  400MHz
    900MHz
    Cell
    Cellular
    Cord
    Cordless
    DICE SALES/0
    QFN/12
    THIN QFN/12
     
    See All Low-Noise Amplifiers (19)
    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
    MAX2371, MAX2373: Typical Operating Circuit
    Typical Operating Circuit

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    Document Ref.: 19-2301; Rev 1; 2006-10-25
    This page last modified: 2007-07-05



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