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19-2872; Rev 4; 6/12
ATION
EVALU
AVAIL
KIT
ABLE
300MHz-to-450MHz Low-Power,
Crystal-Based ASK Transmitter
General 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 50 ? load. The crystal-based architec-
ture 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 improve-
ments 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 Products for
more information.
Applications
Features
o 2.1V to 3.6V Single-Supply Operation
o Low 5.3mA Operating Supply Current*
o Supports ASK with 90dB Modulation Depth
o Output Power Adjustable to More than +10dBm
o Uses Small Low-Cost Crystal
o Small 3mm   3mm 8-Pin SOT23 Package
o Fast-On Oscillator 220 μ s Startup Time
*At 50% duty cycle (315MHz, 2.7V supply, +10dBm output
power)
Ordering Information
Remote Keyless Entry
RF Remote Controls
Tire Pressure Monitoring
PART
MAX1472AKA+T
TEMP
RANGE
-40 ° C to +125 ° C
PIN-
PACKAGE
8 SOT23
TOP
MARK
AEKS
Security Systems
Radio-Controlled Toys
Wireless Game Consoles
Wireless Computer Peripherals
Wireless Sensors
Typical Application Circuit
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Pin Configuration
*
1
+
XTAL1
XTAL2 8
TOP VIEW
2 GND
V DD 7
3.0V
XTAL1 1
+
8
XTAL2
50 ?
ANTENNA
220pF 680pF
MAX1472
3 PAGND
DATA 6
GND
2
MAX1472
7
V DD
DATA INPUT
PAGND
3
6
DATA
4 PAOUT
ENABLE 5
PAOUT 4
5
ENABLE
STANDBY OR
POWER-UP
SOT23
*Optional power adjust resistor.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
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相关代理商/技术参数
MAX1473ETJ 制造商:Maxim Integrated Products 功能描述:315MHZ/433MHZ ASK SUPERHETERODYNE RECEIVER WI - Rail/Tube
MAX1473ETJ+ 功能描述:射频接收器 315MHz/434MHz Superheterodyne Rcvr RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel
MAX1473ETJ+T 功能描述:射频接收器 315MHz/434MHz Superheterodyne Rcvr RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel
MAX1473ETJ-T 制造商:Maxim Integrated Products 功能描述:315MHZ/433MHZ ASK SUPERHETERODYNE RECEIVER WI - Tape and Reel
MAX1473EUI 功能描述:射频接收器 RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel
MAX1473EUI/V+ 功能描述:射频接收器 315MHz/434MHz Superheterodyne Rcvr RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel
MAX1473EUI/V+T 功能描述:射频接收器 315MHz/434MHz Superheterodyne Rcvr RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel
MAX1473EUI+ 功能描述:射频接收器 315MHz/434MHz Superheterodyne Rcvr RoHS:否 制造商:Skyworks Solutions, Inc. 类型:GPS Receiver 封装 / 箱体:QFN-24 工作频率:4.092 MHz 工作电源电压:3.3 V 封装:Reel