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MAX2742
Single-Chip Global Positioning System Receiver Front-End


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Status
Active: In Production.

Description
FULL DATA SHEET (PDF, 116kB)
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The MAX2742 complete single-chip global positioning system (GPS) RF front-end utilizes many innovative and leading-edge RF CMOS design techniques. This high-performance, state-of-the-art device consumes extremely low power and eliminates the need for costly SAW and bulky discrete IF filters. The MAX2742 incorporates a fully integrated low-noise amplifier (LNA) and mixer, IF section, digital sampler, and local oscillator synthesizer.

The intended input signal for the MAX2742 is the L1 GPS signal 1.57542GHz. This device supports high-accuracy output quantization, which delivers the best performance obtainable for the GPS receiver. The power consumption of the MAX2742 is as low as 32mW at a +2.4V supply.

The MAX2742 is available in a space-saving 48-pin TQFP package and is specified for the extended (-40°C to +85°C) temperature range.

Key Features   Applications/Uses
  • Complete Single-Chip GPS Front-End Receiver
  • Single-Ended or Differential Outputs at 1.023MHz
  • Low 4.5dB Typical Noise Figure
  • No External IF SAW or Discrete Filters Required
  • Very Low 32mW Power Consumption at +2.4V
  • Wide +2.4V to +3.6V Operational Supply Voltage Range
  • Extended -40°C to +85°C Temperature Range

 
  • Consumer Electronics
  • Digital Cameras and Camcorders
  • Emergency Response Systems
  • Emergency Roadside Assistance
  • Geographical Information Systems (GISs)
  • In-Vehicle Navigation Systems (IVNS)
  • Inventory Management
  • Location-Based Services (PDAs and Recreational Handheld/Walkie Talkies)
  • Telematics (Vehicle and Asset Tracking, Inventory Management)

    Key Specifications:  GPS Receivers
    Part Number Ref. Clock Freq.
    (MHz)
    IF fOUT
    (MHz)
    IF Output Bits Noise Figure
    (dB)
    VSUPPLY
    (V)
    ISUPPLY
    (mA)
    Footprint
    (mm x mm)
    Package/Pins Smallest Available Pckg.
    (mm2)
    Industry Qualified
    CMOS typ max w/pins
    MAX2742  18.414 1.023 1 4.5 2.4 to 3.6 14 7.0 x 7.0
    TQFP-EP/48
    83 Automotive - General
    See All GPS Receivers (3)

    Diagram
    MAX2742: Typical Application Circuit
    Typical Application Circuit

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    Document Ref.: 19-3469; Rev 2; 2008-06-26
    This page last modified: 2008-06-26


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