MAX1472

300MHz-to-450MHz Low-Power, Crystal-Based ASK Transmitter

Industry's Smallest 300MHz to 450MHz Transmitter in SOT23 Package Consumes Only 5.5mA at +10dBm Output


Please check latest availability status for a specific part variant.

Description

The MAX1472 is a crystal-referenced phase-locked loop (PLL) VHF/UHF transmitter designed to transmit OOK/ASK data in the 300MHz to 450MHz frequency range. The MAX1472 supports data rates up to 100kbps, and adjustable output power to more than +10dBm into a 50Ω load. The crystal-based architecture of the MAX1472 eliminates many of the common problems with SAW transmitters by providing greater modulation depth, faster frequency settling, higher tolerance of the transmit frequency, and reduced temperature dependence. Combined, these improvements enable better overall receiver performance when using a superheterodyne receiver such as the MAX1470 or MAX1473.

The MAX1472 is available in a 3mm x 3mm 8-pin SOT23 package and is specified for the automotive (-40°C to +125°C) temperature range. An evaluation kit is available. Contact Maxim Integrated for more information.
MAX1472: Typical Application Circuit MAX1472: Typical Application Circuit Enlarge+

Key Features

  • 2.1V to 3.6V Single-Supply Operation
  • Low 5.3mA Operating Supply Current*
  • Supports ASK with 90dB Modulation Depth
  • Output Power Adjustable to More than +10dBm
  • Uses Small Low-Cost Crystal
  • Small 3mm x 3mm 8-Pin SOT23 Package
  • Fast-On Oscillator 220µs Startup Time

Applications/Uses

  • Radio-Controlled Toys
  • Remote Keyless Entry (RKE)
  • RF Remote Controls
  • Security Systems
  • Tire-Pressure Monitoring (TPM)
  • Wireless Computer Peripherals
  • Wireless Game Consoles
  • Wireless Sensors
Part NumberBand/ Freq.
(MHz)
Tx Output Power
(dBm)
Modulation ModeVSUPPLY
(V)
max
MAX1472 300 to 45010.3
ASK
OOK
2.1 to 3.6
See All ISM RF Transmitters < 1GHz (15)

Part NumberSolutionsApplicationsBand/ Freq.
(MHz)
Footprint
(mm x mm)
Package/PinsBudgetary
Price
See Notes
MAX1472 300 to 450MHz-ISM RKE
Automotive
Garage Door Openers
Home Automation
ISM
ISM (Europe)
RF Remote Controls
RKE
Security Systems
TPM
300 to 4503.0 x 3.0
SOT23/8
$0.83 @1k
See All ISM RF Transmitters (15)

Part NumberFreq.
(MHz)
Freq.
(MHz)
Package/Pins
minmax
MAX1472 300450
See Data Sheet
See All Transmit System ICs (8)
Pricing 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 and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX1472EVKIT: Evaluation Kit for the MAX1472

Technical Documents

App Note 6561 How to Achieve Greater Accuracy in Battery Capacity Readings for Portable Designs
App Note 5492 Heart-Rate/Fitness Monitors Go Wireless
Tutorial 5436 Getting Started with a Radio Design
Tutorial 5422 Crystal Calculations for ISM-RF Products
Tutorial 5417 How to Optimize an ISM Radio Frequency (RF) System
Reference Schematic 5366 LFRD001: MAX1472/MAX1473/MAXQ610 Remote Keyless Entry Reference Design
Tutorial 5300 RF Basics
App Note 5291 ASK Transmitter/Receiver Pair Serves as an Automotive Antitheft Alert System
App Note 5281 Flexible Configuration of the MAX7060 ASK/FSK ISM-RF Transmitter
Tutorial 5265 Design a Crystal Oscillator to Match Your Application
Reference Schematic 5150 Simple Wireless Temperature Monitor Also Has Data-Logging Capabilities
App Note 5142 Radio Link-Budget Calculations for ISM-RF Products
Tutorial 5100 General Layout Guidelines for RF and Mixed-Signal PCBs
App Note 5023 ISM Transmitter Has Constant Transmitter Power for Varying Supply Voltage
Tutorial 4691 Introduction to Hearing Aids and Important Design Considerations
Tutorial 4687 LEDs Allow New Remote-Controlled Lighting Applications
Tutorial 4686 Important Design Considerations for Heart-Rate and Fitness Monitors
Tutorial 4651 Web Seminar: Wireless Technology Tutorial
Tutorial 4636 Avoid PC-Layout "Gotchas" in ISM-RF Products
App Note 3928 Automotive Linear Regulators Minimize Quiescent Current
App Note 3815 Radiated Power and Field Strength from UHF ISM Transmitters
App Note 3589 Power Amplifier Theory for High-Efficiency Low-Cost ISM-Band Transmitters
App Note 3587 FCC and ETSI Requirements for Short-Range UHF ASK-Modulated Transmitters
App Note 3435 Manchester Data Encoding for Radio Communications
App Note 3401 Matching Maxim's 300MHz to 450MHz Transmitters to Small Loop Antennas
App Note 3395 Requirements of Remote Keyless Entry (RKE) Systems
Tutorial 1955 Fast Start-Up Oscillator (FOX) Boosts Superhet Performance
App Note 1954 Designing Output-Matching Networks for the MAX1472 ASK Transmitter
App Note 1774 Remote Keyless Entry Systems Overview
App Note 1773 Designing Remote Keyless Entry (RKE) Systems
App Note 1017 How to Choose a Quartz Crystal Oscillator for the MAX1470 Superheterodyne Receiver

Quality and Environmental Data

Product Reliability Reports: MAX1472.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Tools & Models

  • MAX1472 Gerber File
  • Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

    Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

    Quality Management System >
    Environmental Management System >

     
    Status:
    Package:
    Temperature:

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    Type ID PDF Title
    App Note 6561 How to Achieve Greater Accuracy in Battery Capacity Readings for Portable Designs
    App Note 5492 Heart-Rate/Fitness Monitors Go Wireless
    Tutorial 5436 Getting Started with a Radio Design
    Tutorial 5422 Crystal Calculations for ISM-RF Products
    Tutorial 5417 How to Optimize an ISM Radio Frequency (RF) System
    Reference Schematic 5366 LFRD001: MAX1472/MAX1473/MAXQ610 Remote Keyless Entry Reference Design
    Tutorial 5300 RF Basics
    App Note 5291 ASK Transmitter/Receiver Pair Serves as an Automotive Antitheft Alert System
    App Note 5281 Flexible Configuration of the MAX7060 ASK/FSK ISM-RF Transmitter
    Tutorial 5265 Design a Crystal Oscillator to Match Your Application
    Reference Schematic 5150 Simple Wireless Temperature Monitor Also Has Data-Logging Capabilities
    App Note 5142 Radio Link-Budget Calculations for ISM-RF Products
    Tutorial 5100 General Layout Guidelines for RF and Mixed-Signal PCBs
    App Note 5023 ISM Transmitter Has Constant Transmitter Power for Varying Supply Voltage
    Tutorial 4691 Introduction to Hearing Aids and Important Design Considerations
    Tutorial 4687 LEDs Allow New Remote-Controlled Lighting Applications
    Tutorial 4686 Important Design Considerations for Heart-Rate and Fitness Monitors
    Tutorial 4651 Web Seminar: Wireless Technology Tutorial
    Tutorial 4636 Avoid PC-Layout "Gotchas" in ISM-RF Products
    App Note 3928 Automotive Linear Regulators Minimize Quiescent Current
    App Note 3815 Radiated Power and Field Strength from UHF ISM Transmitters
    App Note 3589 Power Amplifier Theory for High-Efficiency Low-Cost ISM-Band Transmitters
    App Note 3587 FCC and ETSI Requirements for Short-Range UHF ASK-Modulated Transmitters
    App Note 3435 Manchester Data Encoding for Radio Communications
    App Note 3401 Matching Maxim's 300MHz to 450MHz Transmitters to Small Loop Antennas
    App Note 3395 Requirements of Remote Keyless Entry (RKE) Systems
    Tutorial 1955 Fast Start-Up Oscillator (FOX) Boosts Superhet Performance
    App Note 1954 Designing Output-Matching Networks for the MAX1472 ASK Transmitter
    App Note 1774 Remote Keyless Entry Systems Overview
    App Note 1773 Designing Remote Keyless Entry (RKE) Systems
    App Note 1017 How to Choose a Quartz Crystal Oscillator for the MAX1470 Superheterodyne Receiver