Datasheet > MAX1472_09

MAX1472_09

更新时间： 2024-10-03 05:49:03

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
9页	180K
描述
300MHz-to-450MHz Low-Power, Crystal-Based ASK Transmitter

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MAX1472_09 数据手册

19-2872; Rev 2; 6/09

300MHz-to-450MHz Low-Power,

Crystal-Based ASK Transmitter

MAX1472

General Description

Features

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 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.

♦ 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 ✕ 3mm 8-Pin SOT23 Package

♦ Fast-On Oscillator 220µs Startup Time

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.

*At 50% duty cycle (315MHz, 2.7V supply, +10dBm output

power)

Applications

Ordering Information

Remote Keyless Entry

RF Remote Controls

TEMP

RANGE

PIN-

PACKAGE

TOP

MARK

PART

Tire Pressure Monitoring

Security Systems

MAX1472AKA+T -40°C to +125°C 8 SOT23

AEKS

+Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

Radio-Controlled Toys

Wireless Game Consoles

Wireless Computer Peripherals

Wireless Sensors

Typical Application Circuit

Pin Configuration

TOP VIEW

XTAL1

XTAL2

3.0V

MAX1472

XTAL1

GND

XTAL2

GND

50Ω

ANTENNA

220pF 680pF

MAX1472

DATA

PAGND

PAOUT

DATA

DATA INPUT

PAOUT

ENABLE

STANDBY OR

POWER-UP

SOT23

*Optional power adjust resistor.

________________________________________________________________ Maxim Integrated Products

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.

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