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1340CNPC

1340-Type Lightwave Receiver

Agere -> LSI Corporation 

1340-Type Lightwave Receiver

Data Sheet

January 2000

Description (continued)

The SONET/SDH versions of the receiver are fully

compliant with the latest issue of Telcordia Technolo-

gies GR-253- CORE and the most recent issues of ITU

recommendations G.957 and G.958. The 1340-Type

receiver requires only a single 5 V power supply for

operation. All versions of the receiver are characterized

for operation over the case operating range of –40 °C

to +85 °C at the appropriate data rate for each version.

Manufactured in a 20-pin DIP, the receivers use a pla-

nar, rear illuminated InGaAs PIN photodetector that

allows these receivers to be used at wavelengths from

1.1 µm to 1.6 µm. The photocurrent output of the PIN

detector is amplified and converted to a voltage by a

silicon amplifier. A silicon quantizer provides additional

signal amplification, data threshold detection, and

PECL data outputs. The incoming optical signal is cou-

pled into the receiver through a 62.5 µm core multi-

mode fiber pigtail. The outer jacket diameter of the

pigtail is 900 µm. The receiver can be ordered with the

pigtail terminated in an FC/PC, SC, or ST ® optical con-

nector. Other connectors are available on special order.

See your Agere account representative for ordering

conditions and information.

The receiver has differential PECL data outputs and,

depending on the version selected, either differential

PECL link status flag or complementary CMOS link

status flag outputs. The link status flag outputs indicate

the presence or absence of a minimum acceptable

level of optical input signal.

VCC

FILTER

FLAG FLAG

InGaAs

PIN

GaAs

PREAMPLIFIER

Si

COMPARATOR

FILTER

VPIN

Figure 1. Block Diagram

DATA DATA

1-414(F)

2

Agere Systems Inc.

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