Datasheet > R485WPAA

R485WPAA

更新时间： 2024-11-10 22:24:03

品牌	Logo	应用领域
杰尔 - AGERE		电信集成电路异步传输模式 ATM 时钟
页数	文件大小	规格书
10页	130K
描述
R485-Type Lightwave Receiver with Clock Recovery for 2.488 Gbits/s Applications

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R485WPAA 数据手册

Advance Data Sheet, Rev. 1

October 2001

R485-Type Lightwave Receiver with Clock

Recovery for 2.488 Gbits/s Applications

■ Agere Systems Inc. Reliability and Qualification

Program for built-in quality

■ SONET/SDH compatible for OC-48/STM-16 data

rate

Applications

■ Telecommunications

— Inter- and intraoffice SONET/SDH

— Subscriber loop

— Metropolitan area networks

■ High-speed data communications

Manufactured in a low-profile, 24-pin package, the R485-Type

Receiver features either an avalanche or PIN photodetector, a

transimpedance amplifier, a limiting amplifier, and a clock and

data recovery IC.

Description

The R485-Type 2.5 Gbits/s lightwave receiver is

designed for use in SONET OC-48 and synchronous

digital hierarchy (SDH) STM-16 telecommunications

applications and high-speed data communications

applications. The receiver converts received optical

signals in the range of 1.2 µm to 1.6 µm wavelength

into differential data and clock outputs. The receiver

consists of either InGaAs APD or PIN photodetector

(depending on model selected), a transimpedance

amplifier, a limiting amplifier, and a clock and data

recovery IC (CDR). The CDR uses PLL technology to

extract the clock signal from the converted optical

signal. A TTL compatible link status flag signal indi-

cates when there is a loss of optical signal.

Features

■ Multisourced footprint

■ Internal APD bias supply

■ Differential data and clock outputs

■ APD and PIN versions

■ Typical sensitivity:

—APD, –32 dBm

—PIN, –23 dBm

■ Operation at 1.3 µm or 1.55 µm

■ TTL link status flag

The receiver is manufactured in a low-profile, pig-

tailed, 24-pin plastic DIP package. It requires a sin-

gle, +5.0 V power supply. The APD version has the

added benefit of containing the high-voltage supply

internal to the receiver. This internal supply also pro-

vides the necessary temperature compensation for

the APD.

■ Wide operating case temperature range:

—APD, 0 °C to +70 °C

—PIN, –40 °C to +85 °C

■ Space-saving, self-contained, 24-pin DIP

12 3 4 5 6 7...10

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