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MAX1470
315MHz Low-Power, +3V Superheterodyne Receiver

112dB Sensitivity, 300MHz-450MHz Super-Het Receiver Has 50dB of Integrated Image Rejection


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 228kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail


Description
The MAX1470 is a fully integrated low-power CMOS superheterodyne receiver for use with amplitude-shift-keyed (ASK) data in the 315MHz band. With few required external components, and a low-current power-down mode, it is ideal for cost- and power-sensitive applications in the automotive and consumer markets. The chip consists of a 315MHz low-noise amplifier (LNA), an image rejection mixer, a fully integrated 315MHz phase-lock-loop (PLL), a 10.7MHz IF limiting amplifier stage with received-signal-strength indicator (RSSI) and an ASK demodulator, and analog baseband data-recovery circuitry.

The MAX1470 is available in a 28-pin TSSOP package.

An evaluation kit is available:  MAX1470EVKIT  

Key Features   Applications/Uses
  • Operates from a Single +3.0V to +3.6V Supply
  • Built-In 53dB RF Image Rejection
  • -115dBm Receive Sensitivity*
  • 250µs Startup Time
  • Low 5.5mA Operating Supply Current
  • 1.25µA Low-Current Power-Down Mode for Efficient Power Cycling
  • 250MHz to 500MHz Operating Band (Image Rejection Optimized at 315MHz)
  • Integrated PLL with On-Board Voltage-Controlled Oscillator (VCO) and Loop Filter
  • Selectable IF Bandwidth Through External Filter
  • Complete Receive System from RF to Digital Data Out

 
  • Garage Door Openers
  • Medical Systems
  • Remote Controls
  • Remote Keyless Entry (RKE)
  • Security Systems
  • Toys
  • Video Game Controllers
  • Wireless Computer Peripherals
  • 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)
    Price
    max w/pins See Notes
    MAX1470  5.5 ISM
    300MHz to 450MHz
    400MHz
    250 to 500
    +3.0V to +3.6V Single-Supply Operation
    -115dBm Receive Sensitivity
    5.5mA Operating Supply Current
    53dB RF Image-Rejection
    On-Chip PLL, VCO and Loop Filter
    6.3 x 9.7
    TSSOP/28
    65 $1.80 @1k
    See All ISM RF Receivers (7)

    *See Note 2, AC Electrical Characteristics, in the full data sheet.

    Diagram
    MAX1470: Typical Application Circuit
    Typical Application Circuit

    Application Notes
  • Application Note 749: Improving Receiver Intercept Point Using Selectivity - MAX1470
  • Application Note 1017: How to Choose a Quartz Crystal Oscillator for the MAX1470 Superheterodyne Receiver - MAX1470
  • Application Note 1018: How to Modify an Existing Design from a TDA5200 or TDA5201 to a MAX1470 Superheterodyne Receiver - MAX1470
  • Application Note 1773: Designing Remote Keyless Entry (RKE) Systems - MAX1470
  • Application Note 1774: Remote Keyless Entry Systems Overview - MAX1470
  • Application Note 1776: MAX1470 Superheterodyne Receiver FAQ - MAX1470
  • Application Note 1830: How to Tune and Antenna Match the MAX1470 Circuit - MAX1470
  • Application Note 1836: Improving Receiver Sensitivity with External LNA - MAX1470
  • Application Note 1955: Fast Start-Up Oscillator (FOX) Boosts Superhet Performance - MAX1470
  • Application Note 2815: Calculating the Sensitivity of an ASK Receiver - MAX1470
  • Application Note 3395: Requirements of Remote Keyless Entry (RKE) Systems - MAX1470
  • Application Note 3435: Manchester Data Encoding for Radio Communications - MAX1470
  • Application Note 3671: Data Slicing Techniques for UHF ASK Receivers - MAX1470
  • Application Note 3928: Automotive Linear Regulators Minimize Quiescent Current - MAX1470

    Evaluation Kits
  • MAX1470EVKIT

    Reliability Reports
  • Show FIT data for:
  • Request Reliability Report for:

    Software/Models
  • MAX1470 Gerber File

    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: 1-2 of 2

    MAX1470 Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1470EUI+  
    Active TSSOP;28 pin;65 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0171 (PDF)
    Use pkgcode/variation: U28+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1470EUI+T    
    Active TSSOP;28 pin;65 mm²
    Outline Drawing: 21-0066 (PDF)
    Land Pattern: 90-0171 (PDF)
    Use pkgcode/variation: U28+1*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    Notes and Comments
    Minimal External Components. 10.7MHz IF filter.

    More Information
  • New Product Press Release 2001-09-07 

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    Document Ref.: 19-2135; Rev 1; 2002-10-29
    This page last modified: 2009-05-13


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