Rainbow-electronics MAX1479 Manuel d'utilisateur télécharger pdf

General Description

The MAX1479 crystal-referenced phase-locked-loop

(PLL) VHF/UHF transmitter is designed to transmit ASK,

OOK, and FSK data in the 300MHz to 450MHz frequency

range. The MAX1479 supports data rates up to 100kbps

in ASK mode and 20kbps in FSK mode (both

Manchester coded). The device provides an adjustable

output power of more than +10dBm into a 50Ω load. The

crystal-based architecture of the MAX1479 eliminates

many of the common problems of SAW-based transmit-

ters by providing greater modulation depth, faster fre-

quency settling, higher tolerance of the transmit

frequency, and reduced temperature dependence.

These improvements enable better overall receiver per-

formance when using the MAX1479 together with a

superheterodyne receiver such as the MAX1470,

MAX1471, MAX1473, or MAX7033.

The MAX1479 is available in a 16-pin thin QFN pack-

age (3mm x 3mm) and is specified for the automotive

temperature range from -40°C to +125°C.

Applications

Remote Keyless Entry

Tire Pressure Monitoring

Security Systems

Radio-Controlled Toys

Wireless Game Consoles

Wireless Computer Peripherals

Wireless Sensors

RF Remote Controls

Garage Door Openers

Features

♦ ETSI-Compliant EN300 220

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

♦ Supports ASK, OOK, and FSK Modulations

♦ Adjustable FSK Shift

♦ +10dBm Output Power into 50Ω Load

♦ Low Supply Current (6.7mA in ASK Mode,

and 10.5mA in FSK Mode)

♦ Uses Small Low-Cost Crystal

♦ Small 16-Pin Thin QFN Package

♦ Fast-On Oscillator—200µs Startup Time

♦ Programmable Clock Output

MAX1479

300MHz to 450MHz Low-Power,

Crystal-Based +10dBm ASK/FSK Transmitter

________________________________________________________________ Maxim Integrated Products 1

16 15 14 13

CLK0

CLK1

DEV0

DEV1

TOP VIEW

ENABLE

DIN

MODE

5678

DD_

CLKOUT

PAOUT

ROUT

MAX1479

GND

XTAL2

XTAL1

DEV2

THIN QFN

(3mm x 3mm)

Pin Configuration

Ordering Information

MAX1479

ENABLE

DIN

MODE

CLKOUT

DD_

ROUT

PAOUT

CLK0

CLK1

DEV0

DEV1

DEV2

XTAL1

XTAL2

GND

CRYSTAL

DRIVER

5 6 7 8

13141516

CLOCK

DIVIDER

DIVIDE

BY 32

LOOP

FILTER

ASK

FSK

ENVELOPE

SHAPING

DEVIATION

PD/CP

VCO

Functional Diagram

19-3353; Rev 0; 8/04

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

*EP = Exposed paddle.

PART TEMP RANGE PIN-PACKAGE

MAX1479ATE

-40°C to +125°C

16 Thin QFN-EP*

Typical Application Circuit appears at end of data sheet.

1 2 3 4 5 6 ... 10 11

300MHz to 450MHz Low-Power 1

Résumé du contenu

Page 1 - 300MHz to 450MHz Low-Power

General DescriptionThe MAX1479 crystal-referenced phase-locked-loop(PLL) VHF/UHF transmitter is designed to transmit ASK,OOK, and FSK data in the 300M

Page 2

MAX1479300MHz to 450MHz Low-Power,Crystal-Based +10dBm ASK/FSK Transmitter10 _________________________________________________________________________

Page 3

MAX1479300MHz to 450MHz Low-Power,Crystal-Based +10dBm ASK/FSK TransmitterMaxim cannot assume responsibility for use of any circuitry other than circu

Page 4

MAX1479300MHz to 450MHz Low-Power,Crystal-Based +10dBm ASK/FSK Transmitter2 __________________________________________________________________________

Page 5

MAX1479300MHz to 450MHz Low-Power,Crystal-Based +10dBm ASK/FSK Transmitter____________________________________________________________________________

Page 6

MAX1479300MHz to 450MHz Low-Power,Crystal-Based +10dBm ASK/FSK Transmitter4 __________________________________________________________________________

Page 7

MAX1479300MHz to 450MHz Low-Power,Crystal-Based +10dBm ASK/FSK Transmitter____________________________________________________________________________

Page 8

MAX1479300MHz to 450MHz Low-Power,Crystal-Based +10dBm ASK/FSK Transmitter6 __________________________________________________________________________

Page 9

MAX1479300MHz to 450MHz Low-Power,Crystal-Based +10dBm ASK/FSK Transmitter____________________________________________________________________________

Page 10

MAX1479300MHz to 450MHz Low-Power,Crystal-Based +10dBm ASK/FSK Transmitter8 __________________________________________________________________________

Page 11

MAX1479300MHz to 450MHz Low-Power,Crystal-Based +10dBm ASK/FSK Transmitter____________________________________________________________________________

Commentaires sur ces manuels

Pas de commentaire

Rainbow-electronics MAX1479 Manuel d'utilisateur

Naviguer en ligne ou télécharger Manuel d'utilisateur pour Communication Rainbow-electronics MAX1479. Rainbow Electronics MAX1479 User Manual Manuel d'utilisatio

Résumé du contenu

Commentaires sur ces manuels

Produits connexes et manuels pour Communication Rainbow-electronics MAX1479