AGERE R480CMAA, R480CPAA, R480CPBB, R480FMAA, R480FPAA Datasheet

R480-Type Lightwave Receiver with CML Data Output
for up to 2.488 Gbits/s Applications

Applications

■

Telecommunications:
— Inter- and intraoffice SONET/SDH
— Subscribe r loo p
— Metropolitan area networks

■

High-speed data communications

Description

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

■

Multisourced footprint

■

Internal APD bias supply

■

Differential CML data output

■

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

■

Wide operating case temperature range:
—APD, 0 °C to +85 °C
—PIN, –40 °C to +85 °C

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 con­verts received optical signals in the range of 1.2 µm
to 1.6 µm wavelength into differential CML data out­puts. 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, pig­tailed, 24-pin plastic DIP package. It requires a sin­gle, 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 pro­vides the necessary temperature compensation for
the APD. An analog photodetector monitor provides a
voltage proportional to the optical input level voltage
(OILV).

■

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

■

Agere Systems Inc. Reliabi li ty and Qu al ifi ca tio n
Program for built-in quality

■

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

R480-Type Lightwave Receiver with CML Data Output Data Sheet, Rev. 1
for up to 2.488 Gbits/s Applications September 2001

Flag Output

When the incoming optical signal falls below the link­status switching threshold, the FLAG output is asserted
and the FLAG output logic level changes from a TTL
low to a TTL high.

Pin Information

Table 1. Pin Information

Pin Name Pin Name

CC

†

§

†

1 NIC* 24 NUC
2 NUC
3LOS Flag

†

‡

23 OILV

22 V
4 Ground 21 NUC
5 NIC* 20 Ground
6 NIC* 19 Ground
7 Ground 18 NIC*
8V

CC

17 Ground
9 Ground 16 Ground

10 DATA 15 Ground
11 DATA

14 Ground

12 Ground 13 NIC*

* Pins labeled NIC have no internal connection.
† Pins designated as no user connect (NUC) are connected inter-

nally. The user should not make any connections to these pins.

‡ The loss of signal (LOS) FLAG output is a logic level that indicates

the presence or absence of a minimum acceptable level of optical
input. A TTL logic HIGH indicates the absence of a valid optical
input signal.

§ Analog optical input level voltage (OILV) is proportional to the opti­cal input power.

Handling Precautions

The R480-Type receiver is manufactured with a
39 in. ± 4 in. (100 cm ± 10 cm) single-mode or multi­mode fiber pigtail. SC, FC/PC, LC, and MU connectors
are offered on standard versions. Other optical connec­tor options are available on special order. Please con­tact an Agere Systems’ Account Manager for
availability and ordering information.

Receiver Processing

The R480-Type receiver devices can withstand normal
wave-soldering processes. The complete receiver
module is not hermetically sealed; therefore, it should
not be immersed in, or sprayed with, any solutions. The
optical connector process cap deformation temperature
is 85 °C. The receiver pins can be wave soldered at
250 °C for 10 seconds.

Electrostatic Discharge

CAUTION: This device is susceptible to damage as

a result of electrostatic discharge (ESD).
Take proper precautions during both
handling and testing. Follow guidelines
such as JEDEC Publication No. 108-A
(Dec. 1988).

Although protection circuitry is designed into the
device, take proper precautions to avoid exposure to
ESD .

Agere Systems employs a human-body model (HBM)
for ESD-susceptibility testing and protection design
evaluation. ESD voltage thresholds are dependent on
the critical parameters used to define the model. A
standard HBM (resistance = 1.5 kΩ, capacitance =
100 pF) is widely used and, therefore, can be used for
comparison purposes.

Installation Considerations

Although the receiver has been designed with rugged­ness in mind, care should be used during handling.
The optical connector should be kept free from dust.
The optical connector process cap should be kept in
place as a dust cover when the device is not connected
to a cable. If contamination is present on the optical
connector, the use of canned air with a extension tube
should remove any loose debris. Other cleaning proce­dures are outlined in the

blies

Technical Note (TN95-010LWP).

The cable should be handled conservatively, with no
excessive axial pulling or lateral tugging.

Cleaning Fiber Optic Assem-

The minimum fiber bending radius is 1.5 inches
(38 mm).

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Agere Systems Inc.

Data Sheet, Rev. 1 R480-Type Lightwave Receiver with CML Data Output
September 2001 for up to 2.488 Gbits/s Applications

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso­lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operational sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.

Parameter Symbol Min Max Unit

Operating Case Temperature Range:

APD
PIN

Storage Temperature T

C

T

C

T

stg

0

–40

85
85

–40 85 °C

Optical Input Power—Biased:

APD
PIN

Supply Voltages V

IN

P

IN

P

CC

—
—

0
8

06.5V

Lead Soldering Temperature/Time — — 250/10 °C/s

°C
°C

dBm
dBm

Characteristics

Table 2. Optical Characteristics

–10

At 1.3 µm wavelength and 1 x 10

Parameter Symbol Min

Measured Average Sensitivity:

APD
PIN

Maximum Input Power:

APD
PIN

Link Status Switching Threshold

Decreasing Light Input:

APD

PIN
Flag Response Time t
Signal-Detect Hysteres is — 1.2 — — dB
Optical Input Level Voltage:

‡

PIN at 0 dBm
APD at –10 dBm

Reflectance:

Single-mode Fiber
Multimode Fiber

BER with 223 – 1 NRZ pseudorandom data.

†

Typ

–32
–23

—
—

–40
–27

2.0

2.0

—
—

MIN

P

MIN

P

MAX

P

MAX

P

LSTD
LSTD

FLAG

OILV
OILV

—
—

*

—
—

–8
–3

–45
–34

3 — 1000 µs

—
—

—
—

Max

–30
–21

—
—

–35
–24

—
—

–27
–14

*

Unit

dBm
dBm

dBm
dBm

dBm
dBm

V
V

dB
dB

* Over operating temperature range and at end of life.
†Typical values at room temperature and beginning of life.
‡OILV measured with respect to ground.

Agere Systems Inc.

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