| Customization: | Available |
|---|---|
| Type: | Both Wired and Wireless |
| Wiring Devices: | Data Center |
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
|---|
| Payment Methods: |
|
|---|---|
| Support payments in USD |
| Secure payments: | Every payment you make on Made-in-China.com is protected by the platform. |
|---|
| Refund policy: | Claim a refund if your order doesn't ship, is missing, or arrives with product issues. |
|---|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
LAQ28-SR4
Link-all ' s LAQ28-SR4 is a parallel full-duplex 100GE Quad Small Form-factor Pluggable (QSFP28) transceiver designed for short-range multi-lane data communication. It offers four independent data lanes based on 850 nm VCSEL/PD array technology, and each lane is capable of 25GE operation for an aggregate data rate of 100GE over 100 m OM4 MMF, 70 m OM3 MMF.
LAQ28-SR4 is compliant with the QSFP28 MSA and IEEE 802.3bm, PMD Type 100GBASE-SR4 and CAUI-4, integrating DDM function for real-time performance monitoring and troubleshooting.
Figure 1-1 Transceiver block diagram
Product Features
QSFP28 MSA compliant
IEEE 802.3bm 100GBASE-SR4 compliant
4x 25.78125 Gbps electrical interface (CAUI-4)
Digital diagnostic monitoring support
Four independent full-duplex channels
MPO- 12 optical receptacle
103. 125 Gbps aggregate bit rate
Link distances up to 100m OM4, 70m OM3
Operating case temperature ranges from 0 to +70°C
Single 3.3 V power supply
RoHS 2 compliant
Applications
100GBASE-SR4 100G Ethernet
Data Center Interconnect
Enterprise networking
Ordering Information
| Ordering P/Ns | Description |
LAQ28-SR4 |
100Gb/s QSFP28 SR4 Transceiver 100M/OM4 DDM, MTP/MPO Receptacle, Commercial Temperature |
Notes:
If you need more customized services, please contact us.
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. | Unit | Notes |
| Maximum supply voltage | Vcc | -0.5 | +3.6 | V | ||
| Storage temperature | Ts | -40 | +85 | °C | ||
| Relative humidity | RH | 5 | 85 | % | Non-condensing | |
| Damage threshold, each lane | THd |
+3.4 |
dBm |
Operating Environments
Electrical and optical characteristics below are defined under this operating environment, unless otherwise
specified.
| Parameter | Symbol | Min. | Typ. | Max. | Unit |
| Supply voltage | Vcc | 3.135 | 3.3 | 3.465 | V |
| Case temperature | Tc | 0 | +70 | °C | |
| Data rate, each lane | 25.78125 | Gbps | |||
| Data rate accuracy | - 100 | 100 | ppm | ||
| Link distance with OM3 MMF |
70 |
m |
|||
| Link distance with OM4 MMF |
100 |
m |
Pin Descriptions
LAQ28-SR4 is a hot-pluggable QSFP28 transceiver. Hot pluggable refers to plugging in or unplugging a module while the host board is powered. The QSFP28 host connector is a 0.8 mm pitch 38 position right angle improved connector specified by SFF-8661. QSFP28 module contacts mate with the host in the order of ground, power, followed by signal as illustrated by Figure 2- 1.
| 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 | VccRx | +3.3 V 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 Inverted Data Output | |
| 25 | Rx4p | Receiver Non-Inverted Data Output | |
| 26 | GND | Ground | 1 |
| 27 | ModPrsL | Module Present | |
| 28 | IntL | Interrupt | |
| 29 | VccTx | +3.3 V Power Supply Transmitter | |
| 30 | Vcc1 | +3.3 V 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.
Optical Characteristics
| Parameters | Min. | Typ. | Max. | Unit | Notes |
| Center wavelength | 840 | 850 | 860 | nm | |
| Transmitter | |||||
| RMS spectral width | 0.6 | nm | |||
| Average launch power per Lane |
-8.4 |
+2.4 |
dBm |
||
| Optical modulation amplitude (OMA), each lane |
-6.4 |
+3 |
dBm |
||
| Extinction ratio | 2 | dB | |||
| Launch power in OMA minus TDEC |
-7.3 |
dBm |
|||
| Transmitter and dispersion eye closure (TDEC), each lane |
4.3 |
dB |
|||
| Average launch power of OFF transmitter, each lane |
-30 |
dBm |
|||
| Optical return loss tolerance | 12 | dB | |||
Encircled flux |
≥ 86% at 19 μm ≤ 30% at 4.5 μm |
||||
| Transmitter eye mask definition {X1, X2, X3, Y1, Y2, Y3} |
{0.3, 0.38, 0.45, 0.35, 0.41, 0.5} |
Hit ratio 1.5E-3 hits per sample |
|||
| Receiver | |||||
| Average receive power, each lane |
- 10.3 |
+2.4 |
dBm |
||
| Receive power, each lane (OMA) |
+3 |
dBm |
|||
| Receiver reflectance | - 12 | dB | |||
| Stress receiver sensitivity (OMA) |
-5.2 |
dBm |
for BER = 5E-5 |
||
| LOS assert | -30 | dBm | |||
| LOS de-assert | - 13 | dBm | |||
| LOS hysteresis | 0.5 | dB | |||
Electrical Characteristics
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Notes |
| Supply voltage | Vcc | 3.135 | 3.3 | 3.465 | V | |
| Power dissipation | 3.5 | W | ||||
| Supply current | Icc | 1.008 | A | |||
| Power dissipation (low power mode) |
1.5 |
W |
||||
| Transmitter | ||||||
| Overload differential voltage pk-pk |
Vin |
900 |
mV |
|||
| Differential termination mismatch |
10% |
|||||
| Receiver | ||||||
| Differential voltage pk-pk | Vpp | 900 | mV | |||
| Common mode noise (rms) | Vrms | 17.5 | mV | |||
| Differential termination mismatch |
10% |
|||||
| Transition time | Trise/Tfall | 12 | ps | 20%~80% | ||
| Eye width | EW15 | 0.57 | UI | |||
| Eye height | EH15 | 228 | mV | |||
| Vertical eye closure | VEC | 5.5 | dB | |||
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.
){kind=link}