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

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.

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
MAX1472: Typical Application Circuit
MAX1472: Typical Application Circuit
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
DataSheet
titleDownload file
MAX1472 Data SheetMAX1472.pdf
Parametrics
Part NumberSolutionsApplicationsBand/ Freq.
(MHz)
Footprint
(mm x mm)
Package/PinsBudgetary
Price
See Notes
MAX1472300 to 450MHz-ISM RKEAutomotive
Garage Door Openers
Home Automation
ISM
ISM (Europe)
RF Remote Controls
RKE
Security Systems
TPM
300 to 4503.0 x 3.0SOT/8$0.75 @1k
Design kits & evaluation modules
Quality and Environmental Data
Related Products
  • MAX1473:315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range
  • MAX1470:315MHz Low-Power, +3V Superheterodyne Receiver
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1472AKAActiveSOT,;8 pin;9 mm²-40°C to +125°CNo
MAX1472AKA+ActiveSOT,;8 pin;9 mm²-40°C to +125°CLead Free
MAX1472AKA+TActiveSOT,;8 pin;9 mm²-40°C to +125°CLead Free
MAX1472AKA-TNo Longer AvailableMAX1472AKA+TSOT,;8 pin;9 mm²-40°C to +125°CNo
MAX1472AKA-TG05No Longer AvailableSOT,;8 pin;9 mm²-40°C to +125°CNo
MAX1472.pdf MAX1472
MAX1472.pdf MAX1472
MAX1472.pdf MAX1472
Getting Started with a Radio Design MAX7060
Crystal Calculations for ISM-RF Products MAX7060
How to Optimize an ISM Radio Frequency (RF) System MAX7060
LFRD001: MAX1472/MAX1473/MAXQ610 Remote Keyless Entry Reference Design MAXQ610
RF Basics MAX7060
ASK Transmitter/Receiver Pair Serves as an Automotive Antitheft Alert System MAX1472
Flexible Configuration of the MAX7060 ASK/FSK ISM-RF Transmitter MAX7060
Design a Crystal Oscillator to Match Your Application MAX7060
Simple Wireless Temperature Monitor Also Has Data-Logging Capabilities MAX1472
Important Design Considerations for Heart-Rate and Fitness Monitors MAXQ622
Automotive Linear Regulators Minimize Quiescent Current MAX1472
Manchester Data Encoding for Radio Communications MAX1479
MAX1472.pdf MAX1472
MAX1472.pdf MAX1472