Advance Data Sheet

September 2000

Lightweight Receiver

R768-Type OC-768/STM-256

Agere Systems Inc.

3

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-

lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess

of those given in the operations section of the data sheet. Exposure to absolute maximum ratings for extended

periods can adversely affect device reliability.

* Device is normally reverse biased. Forward biasing the photodiode can compromise device performance and reliability.

Optical Characteristics

Parameter

Symbol

Min

Max

Unit

Positive Supply Voltage

5.0

7.0

V

Photodiode Forward Current*

—1

mA

Maximum Reverse Bias

—5

V

Optical Input Power, PIN

—

8

dBm

Operating Case Temperature

065

°C

Storage Temperature

Tstg

–40

85

°C

Lead Soldering Temperature

—

—

250

°C

Lead Soldering Time

—

—

10

s

Parameter

Symbol

Min

Typ

Max

Unit

Optical wavelength for Rated Sensitivity

λ

1.480

—

1.610

µm

Sensitivity, PIN

—–7

—

dBm

Maximum Optical Input Power, Average, PIN

—3—

dBm

Optical Return Loss

—

–27

–30

—

dBm

λ = 1.55 µm

ℜ

ℜ

ℜ

—

0.7

—

A/W

Total Dark Current

—0.5

—

µA

Polarization-dependent Loss

PDL

—

—

0.5

dB