Rainbow-electronics MAX2740 Manual do Utilizador descarregar pdf (Página 1)

General Description

The MAX2740 is a complete global positioning system

(GPS) receiver from antenna output to digitizer input.

The signal path includes the LNA, two downconverters,

and variable-gain and fixed-gain amplifiers. By utilizing

a double-conversion superheterodyne architecture with

external surface acoustic wave (SAW) filters, high levels

of image rejection and blocking immunity are possible.

Receiver linearity has been maximized to improve oper-

ation in hostile RFI environments found in cellular base

stations. The MAX2740 also includes a high-perfor-

mance voltage-controlled oscillator (VCO) with low

phase noise for subcentimeter carrier phase applica-

tions, and a fixed-frequency synthesizer for generation

of all required on-chip local oscillators.

The unique frequency plan captured in the MAX2740 is

suitable for joint GPS/GLONASS receivers with minimal

external components. This allows the MAX2740 to pro-

vide a cost-effective and high-performance solution for

navigation and timing products that need maximum

satellite availability.

The MAX2740 is compatible with a high-performance

DSP engine capable of very fast time to first fix and

excellent multipath rejection.

________________________Applications

Base Station Timing

E911 Location Assistance

GPS Automotive and Consumer Receivers

Wireless Local-Loop Timing

Joint GPS/GLONASS Receivers

High-Precision Timing for SDH Networks

High-Positional-Accuracy Surveying Equipment

Features

♦ High Selectivity for Hostile Base Station

Environments

♦ Complete Antenna-to-Baseband Receiver

Solution

♦ >100dB Total Receiver Gain Including All Filter

Losses

♦ >50dB Automatic Gain Control (AGC) Range

♦ Fully Balanced Topology for Minimum Spurious

Responses

♦ Low Phase Noise VCO for Carrier Phase

Applications

♦ Compatible with High-Performance Companion

DSP

MAX2740

Integrated GPS Receiver and Synthesizer

________________________________________________________________ Maxim Integrated Products 1

IFMIX_OUT+

IFMIX_OUT-

VGA_IN+

VGA_IN-

GND

VGA_OUT+

VGA_OUT-

GND

FGA_IN+

FGA_IN-

GND

FGA_OUT+

GND

LNA_IN

GND

RFMIX_IN-

VCC_ANA

GND

VCC_VCO

TANK

GND

VCC_DIG

DOWN

GLS_OUT

REF_IN

GND

FGA_OUT-

LNA_OUT

GND

RFMIX_IN+

VCC_RFMIX

RFMIX_OUT+

RFMIX_OUT-

GND

VCC_IFMIX

IFMIX_IN+

IFMIX_IN-

GND

TQFP-EP

/2 /6

PFD

MAX2740

ACTUAL SIZE

9mm x 9mm

TQFP

Pin Configuration/

Functional Diagram

19-1670; Rev 0; 4/00

For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

Ordering Information

48 TQFP-EP*

PIN-PACKAGETEMP. RANGE

-40°C to +85°CMAX2740ECM

PART

*Exposed paddle

1 2 3 4 5 6 7 8

Resumo do Conteúdo

Página 1 - 19-1670; Rev 0; 4/00

General DescriptionThe MAX2740 is a complete global positioning system(GPS) receiver from antenna output to digitizer input.The signal path includes t

Página 2 - AC ELECTRICAL CHARACTERISTICS

MAX2740Integrated GPS Receiver and Synthesizer2 _______________________________________________________________________________________ABSOLUTE MAXIMU

Página 3

MAX2740Integrated GPS Receiver and Synthesizer_______________________________________________________________________________________ 3020104030605070

Página 4 - Pin Description

MAX2740Integrated GPS Receiver and Synthesizer4 _______________________________________________________________________________________Pin Description

Página 5 - Pin Description (continued)

MAX2740Integrated GPS Receiver and Synthesizer_______________________________________________________________________________________ 5Pin Description

Página 6 - Applications Information

MAX2740Applications InformationFigure 1 shows a typical application diagram in whichthe MAX2740 should be used. The RF front end con-sists of the ante

Página 7 - Package Information

MAX2740Integrated GPS Receiver and Synthesizer_______________________________________________________________________________________ 7Package Informa

Página 8

MAX2740Integrated GPS Receiver and SynthesizerMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a

Comentários a estes Manuais

Sem comentários

Rainbow-electronics MAX2740 Manual do Utilizador Página 1

Consulte online ou descarregue Manual do Utilizador para Hardware Rainbow-electronics MAX2740. Rainbow Electronics MAX2740 User Manual Manual do Utilizador

Resumo do Conteúdo

Comentários a estes Manuais

Rainbow-electronics MAX2740 Manual do Utilizador Página 1

Consulte online ou descarregue Manual do Utilizador para Hardware Rainbow-electronics MAX2740. Rainbow Electronics MAX2740 User Manual Manual do Utilizador

Resumo do Conteúdo

Comentários a estes Manuais

Manuais e produtos relacionados com Hardware Rainbow-electronics MAX2740