MAX2741 Maxim Integrated Products, MAX2741 Datasheet

MAX2741

Manufacturer Part Number

MAX2741

Description

Integrated L1-Band GPS Receiver

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX2741.pdf (12 pages)

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Download datasheet (267Kb)

The MAX2741 L1-band GPS receiver IC offers a high-

performance, compact solution for mobile handsets,

PDAs, and automotive applications. Total voltage gain

of 80dB and a 4.7dB cascaded noise figure can pro-

vide receiver sensitivity for applications requiring

-185dBW for indoor tracking solutions.

This dual-conversion receiver downconverts the

1575.42MHz GPS signal to a 37.38MHz first IF, and then

a 3.78MHz second IF. An integrated 2- or 3-bit ADC (1-

bit SIGN, 1- or 2-bit MAG selectable) samples the sec-

ond IF and outputs the digitized signals to the baseband

processor.

The integrated synthesizer offers the flexibility in fre-

quency planning to allow a single board design to be

employed for reference frequencies from 2MHz to

26MHz. The integrated reference oscillator allows either

TCXO or crystal operation.

The receiver runs from a 2.7V to 3.0V supply, and draws

only 30mA when active. It is offered in a 28-pin thin QFN

package, and is specified for -40°C to +85°C at 3V.

19-3559; Rev 0; 1/05

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.

In-Vehicle Navigation Systems (IVNS)

Telematics (Vehicle and Asset Tracking,

Inventory Management)

Automotive Security

Emergency Response Systems

Emergency Road-Side Assistance

Location-Based Services/Internet (PDAs)

Digital Cameras/Camcorders

Recreational Handhelds/Walkie-Talkies

Geographical Information Systems (GIS)

Consumer Electronics (Location-Based Games)

Precision Timing

________________________________________________________________ Maxim Integrated Products

General Description

Applications

Integrated L1-Band GPS Receiver

♦ Supports All Popular Handset Reference

♦ 4.7dB Cascaded Noise Figure

♦ 80dB Cascaded Gain

♦ Tolerates -90dBm In-Band Jammer

♦ Tolerates +13dBm CDMA Out-of-Band Jammer at

♦ Integrated Synthesizer and VCO

♦ Integrated 2- or 3-Bit ADC

♦ 50dB IF AGC Range

♦ Small 28-Pin Thin QFN Package

♦ SPI™ Control Interface

♦ Clock Output for Baseband Processor

SPI is a trademark of Motorola, Inc.

MAX2741ETI

RFIN

GND

N.C.

Frequencies Up to 26MHz

Device Input

PART

1612.8MHz

LNA

3225.6MHz

VCO

SPI INTERFACE

-40°C to +85°C

TEMP RANGE

Ordering Information

/192

Functional Diagram

Pin Configuration/

200kHz

16.8MHz

/16128

33.6MHz

OSC

/96

REF

P.D.

www.DataSheet4U.com

MUX

MAX2741

PIN-PACKAGE

28 Thin QFN

ADC

Features

SDO

N.C.

GPSIF0

GPSIF1

GPSIF2

GPSCLK

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