7

Agere Systems Inc.

Data Sheet

1345-Type Receiver with

January 2000

Clock Recovery and Data Retiming

Table 2. Optical Characteristics

*

For a 1 x 10

†

Whenever the flag output is deasserted (logic low), the DATA and CLOCK outputs are silenced. See the Flag Output section on

page 2 for the DATA and CLOCK output signal levels.

‡

Power supply noise in excess of 50 mVp-p may degrade the performance of the receiver. See User Interface section for recom-

mended power supply filtering.

1-725(C)

Figure 4. Clock/Data Alignment

Parameter

Symbol

Data Rates

Mbits/s

Min

Typ

Unit

OC-3

OC-12

OC-3/STM-1

OC-12/STM-4

—

—

38

–32.5

–36

–30

dBm

dBm

OC-3/STM-1

OC-12/STM-4

0

–6

2

–4

—

—

dBm

dBm

Decreasing Light Input

Decreasing Light Input

OC-3/STM-1

OC-12/STM-4

OC-3/STM-1

OC-12/STM-4

–50

–50

–50

–50

–41

–38.8

–38

–35

–37.5

–32.5

–37.0

–32.0

dBm

dBm

dBm

dBm

Flag Hysteresis

HYS

155/622

0.5

3

6

dB

Flag Response Time

155/622

3

—

100

µs

Detector Responsivity

R

155/622

0.7

0.8

1.2

A/W

50%

50%