1.25Gb/s SFP CWDM 20km
Features
Up to 1.25 Gbps
Hot pluggable
+3.3V power supply
Up to 20km transmission on SMF
Power consumption less than 1.0W
Operating case temperature:0~+70℃
CWDM DFB laser and PIN receiver
Very low EMI and excellent ESD protection
2-Wire interface for integrated DigitalDiagnostic monitoring
Applications
Computer cluster cross-connect
Custom high-speed data pipes
High-speed storage area networks
Technical Specification
|
Absolute Maximum Ratings |
|||||
|
Parameter |
Symbol |
Min. |
Max. |
Unit |
Notes |
|
Storage Temperature |
TS |
-40 |
+85 |
℃ |
|
|
Supply Voltage |
VCC3 |
0 |
3.6 |
V |
|
|
Relative Humidity |
RH |
5 |
+85 |
% |
Note1 |
|
Rx Input Average Power |
Pmax |
- |
+1 |
dBm |
|
Condensing State
|
Recommended Operating Conditions |
|||||
|
Parameter |
Symbol |
Min. |
Typical |
Max. |
Unit |
|
Operating Case Temperature |
TC |
0 |
25 |
+70 |
℃ |
|
Power Supply Voltage |
VCC3 |
3.13 |
3.3 |
3.47 |
V |
|
Total Supply Current |
ICC3 |
- |
- |
300 |
mA |
|
Power Dissipation |
PD |
- |
- |
1.0 |
W |
|
Data Rate |
|
|
1.25 |
|
Gbps |
|
Transmitter Operating Characteristic-Optical, Electrical |
||||||
|
Parameter |
Symbol |
Min. |
Typical |
Max. |
Unit |
|
|
Centre Wavelength |
λC |
|
CWDM |
|
nm |
|
|
Spectral Width |
Δλ |
|
|
1 |
nm |
DFB |
|
Average Optical Power |
Pavg |
-9 |
- |
-3 |
dBm |
|
|
Laser Off Power |
Poff |
- |
- |
-40 |
dBm |
|
|
Extinction Ratio |
ER |
8.2 |
- |
- |
dB |
|
|
Operating Data Rate |
|
- |
1.25 |
- |
Gbps |
|
|
Optical Eye Mask |
Complies with IEEE802.3z eye masks when filtered |
|
||||
|
Tx Input Diff. Voltage |
VI |
500 |
- |
2400 |
mV |
|
|
Tx Fault Output Voltage -- Low |
VoL |
-0.3 |
- |
0.4 |
V |
|
|
Tx Fault Output Voltage -- High |
VoH |
2.4 |
- |
Vcc+0.3 |
V |
|
|
Receiver Operating Characteristic-Optical, Electrical |
||||||
|
Parameter |
Symbol |
Min. |
Typ. |
Max. |
Unit |
Note |
|
Center Wavelength |
λr |
-6.5 |
CWDM |
+6.5 |
nm |
|
|
Receive Sensitivity In Average Power |
Psen |
- |
- |
-22 |
dBm |
|
|
Los Assert |
LosA |
-35 |
- |
- |
dBm |
|
|
Los Dessert |
LosD |
- |
- |
-26 |
dBm |
|
|
Los Hysteresis |
LosH |
0.5 |
- |
6 |
dB |
|
|
Overload |
Psat |
- |
- |
-3 |
dBm |
|
|
Rx Output Diff Voltage |
Vo |
370 |
- |
2000 |
mV |
|
|
Operating Data Rate |
- |
- |
1.25 |
- |
Gbps |
|
|
Digital Diagnostic Functions |
|||||
|
Parameter |
Symbol |
Min. |
Max. |
Unit |
Note |
|
Temperature monitor absolute error |
DMI_Temp |
-3 |
3 |
℃ |
Over operating temp |
|
Laser power monitor absolute error |
DMI_TX |
-3 |
3 |
dB |
|
|
RX power monitor absolute error |
DMI_RX |
-3 |
3 |
dB |
|
|
Supply voltage monitor absolute error |
DMI_VCC |
-3% |
+-3% |
V |
|
|
Bias current monitor absolute error |
DMI_Ibias |
-10% |
10% |
mA |
|
|
Control and Status I/O Timing Characteristics |
|||||
|
Parameter |
Symbol |
Min. |
Max. |
Unit |
Note |
|
TX Disable Assert Time |
t_off |
- |
100 |
µs |
Note1 |
|
TX Disable Negate Time |
t_on |
- |
2 |
ms |
Note2 |
|
Time to initialize including reset of TX_Fault |
t_init |
- |
300 |
ms |
Note3 |
|
TX Fault Assert Time |
t_fault_on |
- |
1 |
ms |
Note4 |
|
TX Fault Reset Time |
t_reset |
10 |
- |
µs |
Note5 |
|
LOS Assert Time |
t_loss_on |
- |
100 |
µs |
Note6 |
|
LOS Deassert Time |
t_loss_off |
- |
100 |
µs |
Note7 |
Notes:
[1] Time from rising edge of TX Disable to when the optical output falls below 10% of nominal
[2] Time from falling edge of TX Disable to when the modulated optical output rises above 90% of nominal
[3] From power on or negation of TX Fault using TX Disable
[4] Time from fault to TX fault on
[5] Time from TX fault to TX nominal
[6] Time from LOS state to RX LOS assert
[7] Time from non-LOS state to RX LOS deassert.
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