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Maxim > Products > [Wireless and RF]  [Automotive] 
MAX1471
315MHz/434MHz Low-Power, 3V/5V ASK/FSK Superheterodyne Receiver

300MHz to 450MHz Superheterodyne ASK/FSK Receiver with Integrated Image Rejection Operates from 3V or 5V Supply


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 408kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX1471 low-power, CMOS, superheterodyne, RF dual-channel receiver is designed to receive both amplitude- shift-keyed (ASK) and frequency-shift-keyed (FSK) data without reconfiguring the device or introducing any time delay normally associated with changing modulation schemes. The MAX1471 requires few external components to realize a complete wireless RF digital data receiver for the 300MHz to 450MHz ISM bands.

The MAX1471 includes all the active components required in a superheterodyne receiver including: a lownoise amplifier (LNA), an image-reject (IR) mixer, a fully integrated phase-locked loop (PLL), local oscillator (LO), 10.7MHz IF limiting amplifier with received-signalstrength indicator (RSSI), low-noise FM demodulator, and a 3V voltage regulator. Differential peak-detecting data demodulators are included for both the FSK and ASK analog baseband data recovery. The MAX1471 includes a discontinuous receive (DRX) mode for low-power operation, which is configured through a serial interface bus.

The MAX1471 is available in a 32-pin thin QFN package and is specified over the automotive -40°C to +125°C temperature range.

Key Features   Applications/Uses
  • ASK and FSK Demodulated Data on Separate Outputs
  • Specified over Automotive -40°C to +125°C Temperature Range
  • Low Operating Supply Voltage Down to 2.4V
  • On-Chip 3V Regulator for 5V Operation
  • Low Operating Supply Current
    • 7mA Continuous Receive Mode
    • 1.1µA Deep-Sleep Mode
  • Discontinuous Receive (DRX) Low-Power Management
  • Fast-On Startup Feature < 250µs
  • Integrated PLL, VCO, and Loop Filter
  • 45dB Integrated Image Rejection
  • RF Input Sensitivity*
    • ASK: -114dBm
    • FSK: -108dBm
  • Selectable IF BW with External Filter
  • Programmable Through Serial User Interface
  • RSSI Output and High Dynamic Range with AGC
*0.2% BER, 4kbps, Manchester-encoded data, 280kHz IF BW

 
  		• Automotive Remote Keyless Entry (RKE)
  		• Garage Door Openers
  		• Home Automation
  		• Local Telemetry Systems
  		• Medical Systems
  		• Security Systems
  		• Tire-Pressure Monitoring Systems
  		• Wireless Keys
  		• Wireless Sensors

    Key Specifications:  ISM RF Receivers
    Part Number ISUPPLY
    (mA)    		 Applications Solutions Band/ Freq.
    (MHz)    		 Features Footprint
    (mm x mm)    		 Package/Pins Smallest Available Pckg.
    (mm2)    		 Industry Qualified Price
    max w/pins See Notes
    MAX1471  7
    ISM
    RKE
    TPM
    300MHz to 450MHz
    400MHz
    		 300 to 450
    -40C to +125C operation
    1.1uA Deep-Sleep Mode Current
    7mA Operating Supply Current
    ASK and FSK Demodulated Data on Separate Outputs
    On-Chip PLL, VCO and Loop Filter
    Operates down to 2.4V
    Operates from Single 3.3V or 5.0V Supplies
    Programmable Through Serial
    		 5.0 x 5.0
    TQFN/32
    		 26
    Automotive - AECQ100
    Automotive - General
    		 $2.85 @1k
    See All ISM RF Receivers (7)

    Diagram
    MAX1471: Typical Application Circuit
    Typical Application Circuit

    Application Notes
  		• Application Note 1955: Fast Start-Up Oscillator (FOX) Boosts Superhet Performance - MAX1471
  		• Application Note 2815: Calculating the Sensitivity of an ASK Receiver - MAX1471
  		• Application Note 3395: Requirements of Remote Keyless Entry (RKE) Systems - MAX1471
  		• Application Note 3435: Manchester Data Encoding for Radio Communications - MAX1471
  		• Application Note 3671: Data Slicing Techniques for UHF ASK Receivers - MAX1471
  		• Application Note 3945: Path Loss in Remote Keyless Entry Systems - MAX1471

    Design Guides
  		• Wireless (PDF)

    Reliability Reports
  		• Reliability Report: AEC-MAX1471ATJ_B.pdf MAX1471ATJ.pdf
  		• Show FIT data for:

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-9 of 9

    MAX1471 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1471EVSYS-315    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX1471EVSYS-433    
    		Active

    Land Pattern: Not Available

    		-40°C to +125°C See data sheet
    MAX1471EVKIT-315    
    		Active

    Land Pattern: Not Available

    		See data sheet
    MAX1471EVKIT-433    
    		Active

    Land Pattern: Not Available

    		See data sheet
    MAX1471ATJ-C3N    
    		Active TQFN;32 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0001 (PDF)
    Use pkgcode/variation: T3255-3*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1471ATJ    
    		Active TQFN;32 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0001 (PDF)
    Use pkgcode/variation: T3255-3*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1471ATJ-T    
    		Active TQFN;32 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0001 (PDF)
    Use pkgcode/variation: T3255-3*
    		-40°C to +125°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1471ATJ+  
    		Active TQFN;32 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0001 (PDF)
    Use pkgcode/variation: T3255+3*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1471ATJ+T    
    		Active TQFN;32 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0001 (PDF)
    Use pkgcode/variation: T3255+3*
    		-40°C to +125°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  		• New Product Press Release 2004-05-12 
  		• Product Family Ad: Download

    Related Products
    MAX1479 300MHz to 450MHz Low-Power, Crystal-Based +10dBm ASK/FSK Transmitter

    More Like This: View Product Families for Similar Products

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    Document Ref.: 19-3272; Rev 1; 2005-04-19
    This page last modified: 2009-10-07


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