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Multi-rate 100G QSFP28 LR4 Transceiver Module
LAQ28-LR4-D
Link-all's LAQ28-LR4-D module are designed for 10 km optical communication applications, and it is compliant to IEEE 802.3ba for 100GE Ethernet and ITU-T 4I1-9D1F for OTU-4. This module contains 4-lane optical transmitter, 4-lane optical receiver and module management block including 2 wire serial interfaces. The optical signals are multiplexed to a single-mode fiber through an industry standard LC connector.
Product Features
QSFP28 MSA compliant
Compliant to IEEE 802.3ba 100GBASE-LR4 and OTN OTU4 4I1-9D1F
Digital diagnostic monitoring support
Hot pluggable 38 pin electrical interface
4 LAN-WDM lanes MUX/DEMUX design
4x25G & 4x28G electrical interface
Maximum power consumption 4 W
LC duplex receptacle
Supports 103. 125 Gbps and 111.81 Gbps aggregate bit rate
Up to 10 km transmission on single mode fiber
Operating case temperature: 0ºC to +70ºC
Single 3.3V power supply
RoHS 2 compliant
Applications
100GBASE-LR4 Ethernet
OTN OTU4 4I1-9D1F
Telecom networking
Data Center Interconnect
Enterprise networking
Ordering Information
Ordering P/Ns | Description |
LAQ28-LR4-D | 100/112Gbps QSFP28 LR4 Transceiver 10KM DDM, LC Receptacle, Commercial Temperature |
Notes:
If you need more customized services, please contact us.
Transceiver Block Diagrams
Function Description
ModSelL:
The ModSelL is an input pin. When held low by the host, the module responds to 2-wire serial communication commands. The ModSelL allows the use of multiple modules on a single 2-wire interface bus. When the ModSelL is "High", the module shall not respond to or acknowledge any 2-wire interface communication from the host. ModSelL signal input node shall be biased to the "High" state in the module.
In order to avoid conflicts, the host system shall not attempt 2-wire interface communications within the ModSelL de-assert time after any modules are deselected. Similarly, the host shall wait at least for the period of the ModSelL assert time before communicating with the newly selected module. The assertion and de-asserting periods of different modules may overlap as long as the above timing requirements are met.
ResetL:
The ResetL pin shall be pulled to Vcc in the module. A low level on the ResetL pin for longer than the minimum pulse length (t_Reset_init) initiates a complete module reset, returning all user module settings to their default state. Module Reset Assert Time (t_init) starts on the rising edge after the low level on the ResetL pin is released. During the execution of a reset (t_init) the host shall disregard all status bits until the module indicates a completion of the reset interrupt. The module indicates this by asserting "low" an IntL signal with the Data_Not_Ready bit negated. Note that on power up (including hot insertion) the module should post this completion of reset interrupt without requiring a reset.
LPMode:
The LPMode pin shall be pulled up to Vcc in the module. The pin is a hardware control used to put modules into a low power mode when high. By using the LPMode pin and a combination of the Power override, Power_set and High_Power_Class_Enable software control bits (Address A0h, byte 93 bits 0, 1,2). The host controls how much
power a module can consume.
ModPrsL:
ModPrsL is pulled up to Vcc_Host on the host board and grounded in the module. The ModPrsL is asserted "Low" when inserted and deasserted "High" when the module is physically absent from the host connector.
IntL:
IntL is an output pin. When IntL is "Low", it indicates a possible module operational fault or a status critical to the host system. The host identifies the source of the interrupt using the 2-wire serial interface. The IntL pin is an open collector output and shall be pulled to host supply voltage on the host board. The INTL pin is deasserted "High" after completion of reset, when byte 2 bit 0 (Data Not Ready) is read with a value of '0' and the flag field is read (see SFF-8636).
Absolute Maximum Ratings
It has to be noted that the operation in excess of any individual absolute maximum ratings might cause permanent
damage to this module.
Parameter | Symbol | Min | Typ | Max | Units |
Storage Temperature | TS | -40 | +85 | ºC | |
Supply Voltage | VCC | -0.5 | 3.3 | 3.6 | V |
Relative Humidity (non-condensing) | RH | 5 | 85 | % | |
Damage Threshold, each lane | THd | 5.5 | dBm |
Parameter | Symbol | Min | Typ | Max | Unit |
Supply Voltage | Vcc | 3.135 | 3.3 | 3.465 | V |
Case Temperature | Top | 0 | +70 | ºC | |
Link Distance with G.652 | 0.002 | 10 | km |
Optical Characteristics
100GBASE-LR4 Operation(EOL, TOP = 0 to +70ºC , VCC = 3. 135 to 3.465 Volts)
Parameters | Min | Typ | Max | Unit | Note |
Transmitter | |||||
Signaling Speed per Lane | 25.78125 ± 100 ppm | Gb/s | |||
Transmit wavelengths |
1294.53 | 1295.56 | 1296.59 | nm |
|
1299.02 | 1300.05 | 1301.09 | |||
1303.54 | 1304.58 | 1305.63 | |||
1308.09 | 1309.14 | 1310.19 | |||
Total Average Launch Power | +10.5 | dBm | |||
Average launch power, each lane | -4.3 | +4.5 | dBm | ||
Optical Modulation Amplitude (OMA), each lane | - 1.3 | +4.5 | dBm | ||
Extinction Ratio (ER) | 4 | dB | |||
Side-Mode Suppression Ratio (SMSR) | 30 | dB | |||
Launch power in OMA minus TDP, each lane | -2.3 | dBm | |||
Transmitter and Dispersion Penalty (TDP), each lane |
2.2 |
dB |
|||
Transmitter reflectance | - 12 | dB | |||
Transmitter eye mask definition {X1, X2, X3, Y1, Y2, Y3} | {0.25, 0.4, 0.45, 0.25, 0.28, 0.4} |
1 |
|||
Receiver | |||||
Signaling Speed per Lane | 25.78125 ± 100 ppm | Gb/s | |||
Receive wavelengths |
1294.53 | 1295.56 | 1296.59 | nm |
|
1299.02 | 1300.05 | 1301.09 | |||
1303.54 | 1304.58 | 1305.63 | |||
1308.09 | 1309.14 | 1310.19 | |||
Average receiver power, each lane | - 10.6 | +4.5 | dBm | ||
Receiver power, each lane (OMA) | +4.5 | dBm | |||
Channel power difference | 5.5 | dB | |||
Damage threshold, each lane | +5.5 | dBm | |||
Receiver sensitivity (OMA), each lane | -8.6 | dBm | 2 | ||
Stressed receiver Sensitivity (OMA) , each lane | -6.8 | dBm | 2 | ||
LOS Assert | -26 | dBm | |||
LOS Deassert | - 13 | dBm | |||
LOS Hysteresis | 0.5 | dB | |||
Receiver reflectance | -26 | dB | |||
Vertical eye closure penalty, each lane | 1.8 | dB | |||
Stressed eye J2 Jitter, each lane | 0.3 | UI | |||
Stressed eye J9 Jitter, each lane | 0.47 | UI |
Notes:
1.Hit ratio 5 × 10−5
2.Sensitivity is specified at BER@1E- 12 without FEC
OTU4 4I1-9D1F Operation (EOL, TOP = 0 to +70°C, VCC = 3. 135 to 3.465 Volts)
Parameters | Min | Typ | Max | Unit | Note |
Transmitter | |||||
Signaling Speed per Lane | 27.9525 ± 20 ppm | Gb/s | |||
Transmit wavelengths |
1294.53 | 1295.56 | 1296.59 | nm |
|
1299.02 | 1300.05 | 1301.09 | |||
1303.54 | 1304.58 | 1305.63 | |||
1308.09 | 1309.14 | 1310.19 | |||
Total average launch power | +8.9 | dBm | |||
Average launch power, each lane | -2.5 | +2.9 | dBm | ||
Extinction ratio (ER) | 7 | - | dB | ||
Maximum channel power difference | 5 | dB | |||
Transmitter eye mask definition {X1, X2, X3, Y1, Y2, Y3} | {0.25, 0.4, 0.45, 0.25, 0.28, 0.4} |
1 |
|||
Receiver | |||||
Signaling Speed per Lane | 27.9525 ± 20 ppm | Gb/s | |||
Receive wavelengths |
1294.53 | 1295.56 | 1296.59 | nm |
|
1299.02 | 1300.05 | 1301.09 | |||
1303.54 | 1304.58 | 1305.63 | |||
1308.09 | 1309.14 | 1310.19 | |||
Average receiver power, each lane | -8.8 | +2.9 | dBm | ||
Channel power difference | 5.5 | dB | |||
Damage threshold, each lane | +5.5 | dBm | |||
Maximum optical path penalty | 1.5 | dB | |||
Equivalent sensitivity | - 10.3 | dBm | 2 | ||
LOS assert | -26 | dBm | 2 | ||
LOS deassert | - 13 | dBm | |||
LOS hysteresis | 0.5 | dB | |||
Receiver reflectance | -26 | dB |
Notes:
1.Hit ratio 5 × 10−5
2.Sensitivity is specified at BER@5E-5 with FEC
Electrical Characteristics
Parameter | Symbol | Min | Typ | Max | Unit | Note |
Power dissipation | 4 | W | ||||
Supply Current |
Icc |
1.1544 |
A |
Steady state |
||
Transmitter | ||||||
Data Rate, each lane |
25.78125 27.9525 |
Gbps | ||||
Differential input Voltage swing |
Vin, pp |
900 |
mV |
At 1 MHz |
||
Transition time | Trise/Tfall | 10 | ps | 20%~80% | ||
Differential Termination Resistance Mismatch |
10 |
% |
||||
Eye width | EW15 | 0.46 | UI | |||
Eye height | EH15 | 95 | mV | |||
Receiver | ||||||
Data Rate, each lane |
25.78125 27.9525 |
Gbps | ||||
Differential Termination Resistance Mismatch |
10 |
% |
At 1 MHz |
|||
Differential output voltage swing |
Vout,pp |
900 |
mVpp |
|||
Common Mode Noise, RMS | Vrms | 17.5 | mV | |||
Transition time | Trise/Tfall | 12 | ps | 20%~80% | ||
Eye width | EW15 | 0.57 | UI | |||
Eye height | EH15 | 228 | mV | |||
Transmitter | ||||||
Data Rate, each lane |
25.78125 27.9525 |
Gbps | ||||
Differential input Voltage swing |
Vin, pp |
900 |
mV |
At 1 MHz |
||
Transition time | Trise/Tfall | 10 | ps | 20%~80% | ||
Differential Termination Resistance Mismatch |
10 |
% |
||||
Eye width | EW15 | 0.46 | UI | |||
Eye height | EH15 | 95 | mV | |||
Receiver | ||||||
Data Rate, each lane |
25.78125 27.9525 |
Gbps | ||||
Differential Termination Resistance Mismatch |
10 |
% |
At 1 MHz |
|||
Differential output voltage swing |
Vout,pp |
900 |
mVpp |
|||
Common Mode Noise, RMS | Vrms | 17.5 | mV | |||
Transition time | Trise/Tfall | 12 | ps | 20%~80% | ||
Eye width | EW15 | 0.57 | UI | |||
Eye height | EH15 | 228 | mV |
Pin Assignment
Pin Function Definitions
Pin | Symbol | Description | Notes |
1 | GND | Ground | 1 |
2 | Tx2n | Transmitter Inverted Data Input | |
3 | Tx2p | Transmitter Non-Inverted Data Input | |
4 | GND | Ground | 1 |
5 | Tx4n | Transmitter Inverted Data Input | |
6 | Tx4p | Transmitter Non-Inverted Data Input | |
7 | GND | Ground | 1 |
8 | ModSelL | Module Select | |
9 | ResetL | Module Reset | |
10 | Vcc Rx | +3.3V Power Supply Receiver | |
11 | SCL | 2-wire serial interface clock | |
12 | SDA | 2-wire serial interface data | |
13 | GND | Ground | 1 |
14 | Rx3p | Receiver Non-Inverted Data Output | |
15 | Rx3n | Receiver Inverted Data Output | |
16 | GND | Ground | 1 |
17 | Rx1p | Receiver Non-Inverted Data Output | |
18 | Rx1n | Receiver Inverted Data Output | |
19 | GND | Ground | 1 |
20 | GND | Ground | 1 |
21 | Rx2n | Receiver Inverted Data Output | |
22 | Rx2p | Receiver Non-Inverted Data Output | |
23 | GND | Ground | 1 |
24 | Rx4n | Receiver Non-Inverted Data Output | |
25 | Rx4p | Receiver Inverted Data Output | |
26 | GND | Ground | 1 |
27 | ModPrsL | Module Present | |
28 | IntL | Interrupt | |
29 | Vcc Tx | +3.3V Power supply transmitter | |
30 | Vcc1 | +3.3V Power supply | |
31 | LPMode | Low Power Mode | |
32 | GND | Ground | 1 |
33 | Tx3p | Transmitter Non-Inverted Data Input | |
34 | Tx3n | Transmitter Inverted Data Input | |
35 | GND | Ground | 1 |
36 | Tx1p | Transmitter Non-Inverted Data Input | |
37 | Tx1n | Transmitter Inverted Data Input | |
38 | GND | Ground | 1 |
Notes:
1.Circuit ground is internally isolated from chassis ground.
Being a leading manufacturer of opical transceivers, we produce all kinds of optical transceivers from 1.25G to 800G, CWDM/DWDM/FWDM, Media Converters, PLC Spliters.. We have been in this field for about 15 years. Having attended many international fairs, we have been supplying to established companies worldwide. In general, we have rich experience in working with those big companies who value qualty much. So you may trust us on our product quality.