Datasheet > 49XX

49XX

更新时间： 2024-09-29 23:21:35

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描述
49xx Series Product Brief\|RF Tuner Modules

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49XX 数据手册

M I C R O T U N E™

CABLE MODEM AND

DIGITAL APPLICATIONS

49XX SERIES RF TUNER MODULES

APPLICATIONS

•

Cable modems (CM)

Cable telephony

Digital cable systems

FEATURES

•

Input frequency ranges:

ꢀ 50 MHz to 860 MHz (US)

ꢀ 70 MHz to 862 MHz (EU)

•

DOCSIS, EuroDOCSIS, and

DVB compliant

Contains an IF SAW filter, IF

amplifier, and optional second

downconversion to near

baseband IF

Modules can be implemented with different sockets,

filters, interfaces, connectors, and other customizable

options within the same pinouts.

•

Contains a diplex filter and

digitally-programmable-gain

amplifier in the upstream path

The 49xx Series RF Tuner

Modules are specifically

Downstream band selection and

tuning is done via I²C bus while a

separate, three-wire bus and

transmit enable control the

upstream amplifier.

Downstream tuner functions

designed for subscriber-side

cable modem applications.

Downstream signal frequencies

range from 50 MHz to 860 MHz

(US) and 70 MHz to 862 MHz

(EU). Upstream signal

controlled by I²C bus

•

Single 5V supply

Antenna input: F-connector

Horizontal mounting

Dimensions (l x h x d):

66 x 39 x 14 mm

Two gain-control inputs (RF+IF)

are available to adjust the output

signal level. The tuner IF output

is designed to drive a low-pass

image-reject filter prior to the

QAM demodulator IC.

frequencies range from 5 MHz to

42 MHz (US) and 5 MHz to

65 MHz (EU).

The receivers use a three-band

single-conversion approach, with

a 43.75 MHz (US) or 36.125 MHz

(EU) output frequency. A second

conversion to 5.75 MHz (US) or

7.125 MHz (EU) is available for

QAM demodulators requiring a

lower IF center frequency.

A DC/DC converter for 33V

generation is built in, so that only

a single supply voltage of 5V is

required.

The common antenna

input/output is realized by an F-

connector (75Ω) per [IPS-sp-

406].

Product Brief

中文翻译

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