Datasheet > MAX7044_11

MAX7044_11

更新时间： 2024-01-09 02:27:32

品牌	Logo	应用领域
美信 - MAXIM		晶体
页数	文件大小	规格书
10页	148K
描述
300MHz to 450MHz High-Efficiency, Crystal-Based +13dBm ASK Transmitter

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MAX7044_11 数据手册

19-3221; Rev 4; 2/11

300MHz to 450MHz High-Efficiency,

Crystal-Based +13dBm ASK Transmitter

MAX704

General Description

Features

The MAX7044 crystal-referenced phase-locked-loop

(PLL) VHF/UHF transmitter is designed to transmit

OOK/ASK data in the 300MHz to 450MHz frequency

range. The MAX7044 supports data rates up to 100kbps,

and provides output power up to +13dBm into a 50Ω

load while only drawing 7.7mA at 2.7V.

o +2.1V to +3.6V Single-Supply Operation

o OOK/ASK Transmit Data Format

o Up to 100kbps Data Rate

o +13dBm Output Power into 50Ω Load

o Low 7.7mA (typ) Operating Supply Current*

o Uses Small, Low-Cost Crystal

o Small 3mm x 3mm 8-Pin SOT23 Package

o Fast-On Oscillator: 250μs Startup Time

The crystal-based architecture of the MAX7044 elimi-

nates many of the common problems with SAW-based

transmitters by providing greater modulation depth,

faster frequency settling, higher tolerance of the trans-

mit frequency, and reduced temperature dependence.

The MAX7044 also features a low supply voltage of

+2.1V to +3.6V. These improvements enable better

overall receiver performance when using the MAX7044

together with a superheterodyne receiver such as the

MAX1470 or MAX1473.

* At 50% duty cycle (315MHz, 2.7V supply, +13dBm output

power)

A simple, single-input data interface and a buffered

clock-out signal at 1/16th the crystal frequency make

the MAX7044 compatible with almost any microcon-

troller or code-hopping generator.

The MAX7044 is available in an 8-pin SOT23 package

and is specified over the -40°C to +125°C automotive

temperature range.

Ordering Information

PIN-

PART

TEMP RANGE

TOP MARK

PACKAGE

MAX7044AKA+T -40°C to +125°C 8 SOT23

Applications

Remote Keyless Entry (RKE)

Tire-Pressure Monitoring (TPM)

Security Systems

AEJW

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

T = Tape and reel.

Garage Door Openers

RF Remote Controls

Wireless Game Consoles

Wireless Computer Peripherals

Wireless Sensors

Typical Application Circuit

Pin Configuration

TOP VIEW

XTAL

3.0V

XTAL2

XTAL1

GND

XTAL1

GND

XTAL2

220pF

100nF

680pF

100nF

MAX7044

DATA INPUT

PAGND

PAOUT

DATA

ANTENNA

DATA

PAGND

CLOCK

CLKOUT

OUTPUT

CLKOUT

PAOUT

CLKOUT

/16)

XTAL

SOT23

________________________________________________________________ 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.

12 3 4 5 6 7...10

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与MAX7044_11相关器件

型号	品牌	获取价格	描述	数据表
MAX7044AKA	MAXIM	获取价格	300MHz to 450MHz High-Efficiency, Crystal-Based +13dBm ASK Transmitter
MAX7044AKA+T	MAXIM	获取价格	300MHz to 450MHz High-Efficiency, Crystal-Based +13dBm ASK Transmitter
MAX7044AKA-T	MAXIM	获取价格	300MHz to 450MHz High-Efficiency, Crystal-Based +13dBm ASK Transmitter
MAX7044EVKIT	MAXIM	获取价格	Single Input Voltage Supply from 2.1V to 3.6V
MAX7044EVKIT-315	MAXIM	获取价格	Evaluation Kit
MAX7044EVKIT-433	MAXIM	获取价格	Evaluation Kit
MAX7049	MAXIM	获取价格	High-Performance, 288MHz to 945MHz ASK/FSK ISM Transmitter
MAX7049ATI	MAXIM	获取价格	High-Performance, 288MHz to 945MHz ASK/FSK ISM Transmitter
MAX704C/D	MAXIM	获取价格	Low-Cost レP Supervisory Circuits with Battery
MAX704CPA	MAXIM	获取价格	Low-Cost レP Supervisory Circuits with Battery

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