參數(shù)資料
型號(hào)： 1345FMPD
英文描述： FIBER OPTIC RECEIVER
中文描述： 光纖接收
文件頁(yè)數(shù)： 10/12頁(yè)
文件大?。?/td> 72K
代理商： 1345FMPD
7
Agere Systems Inc.
Data Sheet
1345-Type Receiver with
January 2000
Clock Recovery and Data Retiming
Characteristics (continued)
Table 2. Optical Characteristics
*
For a 1 x 10
–10 BER. Measured with a 223 – 1 pseudorandom word optical input having a 50% average duty cycle.
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
Max*
Unit
Measured Average Sensitivity:*,
OC-3
OC-12
PRL
OC-3/STM-1
OC-12/STM-4
—
38
–32.5
–36
–30
dBm
Maximum Input Power
PMAX
OC-3/STM-1
OC-12/STM-4
0
–6
2
–4
—
dBm
Link Status Flag Threshold:
Decreasing Light Input
LSTD
LSTI
OC-3/STM-1
OC-12/STM-4
OC-3/STM-1
OC-12/STM-4
–50
–41
–38.8
–38
–35
–37.5
–32.5
–37.0
–32.0
dBm
Flag Hysteresis
HYS
155/622
0.5
3
6
dB
Flag Response Time
tFLAG
155/622
3
—
100
s
Detector Responsivity
R
155/622
0.7
0.8
1.2
A/W
50%
CLOCKOUT
DATAOUT
TCDA
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