Datasheet > MAX2108_05

MAX2108_05

更新时间： 2024-02-12 22:58:26

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描述
Direct-Conversion Tuner IC

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数据手册

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MAX2108_05 数据手册

19-1449; Rev 1; 6/05

Direct-Conversion Tuner IC

General Description

Features

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.

ꢀ Low-Cost Architecture

ꢀ Operates from Single +5V Supply

ꢀ On-Chip Quadrature Generator, Dual-Modulus

Prescaler (/32, /33)

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.

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

ꢀ Over 50dB RF Gain-Control Range

ꢀ 10dB Noise Figure at Maximum Gain

ꢀ +8dBm IIP3 at Minimum Gain

Applications

DirecTV, PrimeStar, EchoStar DBS Tuners

DVB-Compliant DBS Tuners

Cellular Base Stations

Ordering Information

PART

TEMP RANGE

0°C to +70°C

PIN-PACKAGE

24 QSOP

MAX2108CEG

MAX2108CEG+

24 QSOP

Wireless Local Loop

+Denotes lead-free package.

Broadband Systems

LMDS

Pin Configuration appears at end of data sheet.

Microwave Links

Functional Diagram

RFIN

IOUT

PS_SEL

GND

RFIN

GND

IOUT

/32

/33

MAX2108

PSOUT

GND

PSOUT

GND

N.C.

QOUT

N.C.

GND

________________________________________________________________ Maxim Integrated Products

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.

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