Product Details
D-Net's QSFP-40G-LR4 provides four independent transmit and receive channels, each with a bandwidth of 10 Gbps. The 40G LR4 optical module necessitates internal multiplexing (MUX) or demultiplexing (DEMUX) of the optical signal to facilitate the transmission of the four-channel signal over a single-mode fiber.
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Absolute Maximum Ratings
|
Parameter |
Symbol |
Min. |
Typical |
Max. |
Unit |
|
Storage Temperature |
TS |
-40 |
+85 |
°C |
|
|
Supply Voltage |
VCCT, R |
-0.5 |
4 |
V |
|
|
Relative Humidity |
RH |
0 |
85 |
% |
Recommended Operating Environment
|
Parameter |
Symbol |
Min. |
Typical |
Max. |
Unit |
|
Case operating Temperature |
TC |
0 |
+70 |
°C |
|
|
Supply Voltage |
VCCT, R |
+3.13 |
3.3 |
+3.47 |
V |
|
Supply Current |
ICC |
900 |
mA |
||
|
Power Dissipation |
PD |
3 |
W |
Electrical Characteristics
(TOP = 0 to 70 °C, VCC = 3.13 to 3.47 Volts)
|
Parameter |
Symbol |
Min |
Typ |
Max |
Unit |
Note |
|
Data Rate per Channel |
- |
10.3125 |
11.2 |
Gbps |
||
|
Power Consumption |
- |
2.5 |
3.5 |
W |
||
|
Supply Current |
Icc |
0.75 |
1 |
A |
||
|
Control I/O Voltage-High |
VIH |
2 |
Vcc |
V |
||
|
Transmitter |
||||||
|
Single Ended Output Voltage Tolerance |
0.3 |
4 |
V |
1 |
||
|
Common mode Voltage Tolerance |
15 |
mV |
||||
|
Transmit Input Diff Voltage |
VI |
150 |
1200 |
mV |
||
|
Data Dependent Input Jitter |
|
|
||||
|
Receiver |
||||||
|
Single Ended Output Voltage Tolerance |
0.3 |
4 |
V |
|||
|
Rx Output Diff Voltage |
Vo |
370 |
600 |
950 |
mV |
|
|
Rx Output Rise and Fall Voltage |
Tr/Tf |
35 |
ps |
1 |
||
|
Total Jitter |
TJ |
0.3 |
UI |
|||
Note: 20～80%
Optical Parameters
(TOP = 0 to 70 °C, VCC = 3.0 to 3.6 Volts)
|
(TDP), each Lane |
||||||
|
TDP, each Lane |
TDP |
2.3 |
dB |
|||
|
Extinction Ratio |
ER |
3.5 |
- |
- |
dB |
|
|
Transmitter Eye Mask Definition {X1, X2, X3, Y1, Y2, Y3} |
{0.25, 0.4, 0.45, 0.25, 0.28, 0.4} |
|||||
|
Optical Return Loss Tolerance |
- |
- |
20 |
dB | ||
|
Average Launch Power OFF Transmitter, each Lane |
Poff |
-30 |
dBm |
|||
|
Relative Intensity Noise |
Rin |
-128 |
dB/HZ |
1 |
||
|
Optical Return Loss Tolerance |
- |
- |
12 |
dB |
||
|
Receiver |
||||||
|
Damage Threshold |
THd |
5 |
dBm |
1 |
||
|
Average Power at Receiver Input, each Lane |
R |
-14 |
3 |
dBm |
||
|
Receive Electrical 3dB upper Cut off Frequency, each Lane |
12.3 |
GHz |
||||
|
RSSI Accuracy |
||||||
|
Receiver Reflectance |
||||||
|
Receiver Power (OMA), each Lane |
- |
- |
3.5 |
dBm |
||
|
Receive Electrical 3dB upper Cutoff Frequency, each Lane |
12.3 |
GHz |
||||
|
LOS De-Assert |
LOSD |
-15 |
dBm |
|||
|
LOS Assert |
LOSA |
-25 |
dBm |
|||
|
LOS Hysteresis |
LOSH |
0.5 |
dB |
|||
Note: 12dB Reflection
|
Parameter |
Symbol |
Min |
Typ |
Max |
Unit |
Ref. |
|
Transmitter |
||||||
|
Wavelength Assignment |
L0 |
1264.5 |
1271 |
1277.5 |
nm |
|
|
L1 |
1284.5 |
1291 |
1297.5 |
nm |
||
|
L3 |
1324.5 |
1331 |
1337.5 |
nm |
||
|
Side-mode Suppression Ratio |
SMSR |
30 |
- |
- |
dB |
|
|
Total Average Launch Power |
PT |
- |
- |
4 |
dBm |
|
|
Average Launch Power, each Lane |
-6 |
- |
1 |
dBm |
||
|
Difference in Launch Power between any two Lanes (OMA) |
- |
4 |
dB |
|||
|
Optical Modulation Amplitude, each Lane |
OMA |
-5 |
+2 |
dBm |
||
|
Launch Power in OMA minus Transmitter and Dispersion Penalty |
-5 |
- |
dBm |
|||
Ordering Information
|
Part Number |
Description |
|
QSFP-40G-LR4 |
40Gb/s 10km QSFP+ Transceiver Hot Pluggable, Duplex LC Connector, Single mode |
FAQ
1. What is 40GBASE-LR4?
The 40G-LR4 meets the IEEE 802.3ba 40GBASE-LR4 standard, using a LC duplex connector, and can transmit over a long distance of up to 10 km through a single-mode optical fiber.
2. What is the range of QSFP LR4?
D-net 40G-LR4 has four CWDM channels,The central wavelengths of the 4 CWDM channels are 1271, 1291, 1311 and 1331nm as members of the CWDM wavelength grid defined in ITU-T G694.2.
3. What is the difference between 40GBASE-SR4 and 40GBASE LR4?
The 40G-SR 4 is used for short-distance transmission, while the 40G-LR4 is used in multi-mode applications, for long-distance data transmission.
