MAX1472
300MHz-to-450MHz Low-Power, Crystal-Based ASK Transmitter
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Industry's Smallest 300MHz to 450MHz Transmitter in SOT23 Package Consumes Only 5.5mA at +10dBm Output
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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
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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.
Applications
- Radio-Controlled Toys
- Remote Keyless Entry (RKE)
- RF Remote Controls
- Security Systems
- Tire-Pressure Monitoring (TPM)
- Wireless Computer Peripherals
- Wireless Game Consoles
- Wireless Sensors
Ask a Question
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MAX1472
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MAX1472: 300MHz-to-450MHz Low-Power, Crystal-Based ASK Transmitter Data Sheet (Rev.4)
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Data Sheet 1
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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
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Small-Outline Transistor Package
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Nov 1, 2021
- 2209
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MAX1472AKA+
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Feb 5, 2015
- 1370_CANCELLATION
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Evaluation Kits 1
MAX1472EVKIT
Evaluation Kit for the MAX1472
Features and Benefits
- Proven PC Board Layout
- Proven Components Parts List
- Multiple Test Points Provided On-Board
- Available in 315MHz or 433.92MHz Optimized Versions
- Adjustable Frequency Range from 300MHz to 450MHz*
- Fully Assembled and Tested
- Can Operate as a Stand-Alone Transmitter with Included Battery
Product Detail
The MAX1472 evaluation kit (EV kit) allows for a detailed evaluation of the MAX1472 ASK transmitter. It enables testing of the device's RF performance and requires no additional support circuitry. The RF output uses a 50Ω matching network and an SMA connector for convenient connection to test equipment. A reverse-polarity SMA is also included to connect to a 1/4 wave whip antenna. The EV kit can also directly interface to the user's embedded design for easy data encoding.
The MAX1472 EV kit comes in two versions: a 315MHz version and a 433.92MHz version. The passive components are optimized for these frequencies. These components can easily be changed to work at RF frequencies from 300MHz to 450MHz.
For easy implementation into the customer's design, the MAX1472 EV kit also features a proven PC board layout, which can be easily duplicated for quicker time-to-market. The EV kit Gerber files are available for download at www.maximintegrated.com.
Applications
- Radio-Controlled Toys
- Remote Keyless Entry (RKE)
- RF Remote Controls
- Security Systems
- Tire-Pressure Monitoring (TPM)
- Wireless Computer Peripherals
- Wireless Game Consoles
- Wireless Sensors
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