Rainbow-electronics MAX2108 Manual do Utilizador descarregar pdf

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

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

General Description

The MAX2108 is a low-cost direct-conversion tuner IC

designed for use in digital direct-broadcast satellite

(DBS) television set-top box units and microwave links.

Its direct-conversion architecture reduces system cost

compared to devices with IF-based architectures.

The MAX2108 directly tunes L-band signals to base-

band using a broadband I/Q downconverter. The oper-

ating frequency range spans from 950MHz to

2150MHz. The IC includes a low-noise amplifier (LNA)

with gain control, two downconverter mixers with output

buffers, a 90° quadrature generator, and a divide-by

32/33 prescaler.

Applications

DirecTV, PrimeStar, EchoStar DBS Tuners

DVB-Compliant DBS Tuners

Cellular Base Stations

Wireless Local Loop

Broadband Systems

LMDS

Microwave Links

Features

♦ Low-Cost Architecture

♦ Operates from Single +5V Supply

♦ On-Chip Quadrature Generator, Dual-Modulus

Prescaler (/32, /33)

♦ Input Levels: -20dBm to -70dBm per Carrier

♦ Over 50dB RF Gain-Control Range

♦ 10dB Noise Figure at Maximum Gain

♦ +8dBm IIP3 at Minimum Gain

MAX2108

Direct-Conversion Tuner IC

________________________________________________________________

Maxim Integrated Products

PS_SEL GC GND GND RFIN

RFIN

GND IOUT

IOUT

PSOUT

PSOUT GND GND N.C. LO LO QOUT QOUT

N.C. GND

1211109 876543 21

13 14 15 16 17 18 19 20 21 22 23 24

MAX2108

/32

/33

Functional Diagram

19-1449; Rev 0; 4/99

PART

MAX2108CEG 0°C to +70°C

TEMP. RANGE PIN-PACKAGE

24 QSOP

Ordering Information

Pin Configuration appears at end of data sheet.

1 2 3 4 5 6 ... 11 12

Direct-Conversion Tuner IC 1

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Página 1 - Direct-Conversion Tuner IC

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.For small orders, phone 1-800-835-8769.General Descript

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MAX2108Direct-Conversion Tuner IC10 ______________________________________________________________________________________2423222120191817123456781615

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MAX2108Direct-Conversion Tuner IC______________________________________________________________________________________ 11242322212019181712345678QOUT

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MAX2108Direct-Conversion Tuner ICMaxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product

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MAX2108Direct-Conversion Tuner IC2 _______________________________________________________________________________________ABSOLUTE MAXIMUM RATINGSDC E

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MAX2108Direct-Conversion Tuner IC_______________________________________________________________________________________ 3AC ELECTRICAL CHARACTERISTIC

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MAX2108Direct-Conversion Tuner IC4 _______________________________________________________________________________________Typical Operating Characteri

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MAX2108Direct-Conversion Tuner IC_______________________________________________________________________________________ 5NAME FUNCTION1IOUTInverting

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MAX2108Direct-Conversion Tuner IC6 ______________________________________________________________________________________________________Detailed Desc

Página 10

MAX2108Direct-Conversion Tuner IC_______________________________________________________________________________________ 7Power-Supply SequencingThe M

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MAX2108Direct-Conversion Tuner IC8 _______________________________________________________________________________________RSC1 C2 C3 C4RLADCSDSPMATCHE

Página 12

MAX2108Direct-Conversion Tuner IC_______________________________________________________________________________________ 9MHzDESIREDCHANNEL(20Msps)dBc

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Rainbow-electronics MAX2108 Manual do Utilizador

Consulte online ou descarregue Manual do Utilizador para Hardware Rainbow-electronics MAX2108. Rainbow Electronics MAX2108 User Manual Manual do Utilizador

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