R480-Type Lightwave Receiver with CML Data Output

for up to 2.488 Gbits/s Applications

Data Sheet, Rev. 1

September 2001

Manufactured in a low-profile, 24-pin package, the R480-Type

receiver features either an avalanche or PIN photodetector, a

transimpedance amplifier, and a limiting amplifier IC.

Features

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Multisourced footprint

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Internal APD bias supply

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Differential CML data output

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APD and PIN versions

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Typical sensitivity:

—APD, –32 dBm

—PIN, –23 dBm

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Operation at 1.3

µm or 1.55 µm

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TTL link status flag

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Wide operating case temperature range:

—APD, 0

°C to +85 °C

—PIN, –40

°C to +85 °C

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

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Agere Systems Inc. Reliability and Qualification

Program for built-in quality

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

rate

Applications

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Telecommunications:

— Inter- and intraoffice SONET/SDH

— Subscriber loop

— Metropolitan area networks

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High-speed data communications

Description

The R480-Type 2.5 Gbits/s lightwave receiver is

designed for use in SONET and synchronous digital

hierarchy (SDH) telecommunications applications up

to OC-48 and STM-16 data rates, and high-speed

data communications applications. The receiver con-

verts received optical signals in the range of 1.2

µm

to 1.6

µm wavelength into differential CML data out-

puts. The receiver consists of either an InGaAs APD

or PIN photodetector (depending on model selected),

a transimpedance amplifier, and a limiting amplifier

that provides differential CML data output. A TTL

compatible link status flag signal indicates when

there is a loss of optical signal.

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. An analog photodetector monitor provides a

voltage proportional to the optical input level voltage

(OILV).