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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 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

Parametrics

Design kits & evaluation modules

• MAX1472EVKIT

Quality and Environmental Data

• MAX1472.pdf

Related Products

• MAX1473：315MHz/433MHz ASK Superheterodyne Receiver with Extended Dynamic Range
• MAX1470：315MHz Low-Power, +3V Superheterodyne Receiver

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