Product Overview
The SPT-QD04G-LR8 is a QSFP-DD packaged 400G-LR8 optical transceiver module that supports a 400Gbps data transmission rate with a maximum transmission distance of 10km (single-mode fiber). This module features an LC interface and PAM4 modulation format, has a built-in DDM (Digital Diagnostic Monitoring) function, and is suitable for long-distance data center interconnects, 400G Ethernet, and other applications.
Product Features
- QSFP-DD package: High-density, high-speed package format
- 400Gbps data rate: Supports 400Gbps data transmission (8×53.125Gb/s PAM4)
- 10km transmission distance: Maximum transmission distance of 10km over single-mode fiber
- LC interface: Standard duplex LC fiber connector
- PAM4 modulation: Advanced Pulse Amplitude Modulation technology
- 1310nm wavelength: Standard single-mode fiber operating wavelength
- DDM digital diagnostic monitoring: Supports real-time monitoring of module operating status
- Low power consumption: Optimized power management
- Hot-pluggable: Supports hot-plug operation
- Compliant with industry standards: Compatible with the QSFP-DD MSA specification
Specifications
| Item | Specification |
|---|---|
| Product Model | SPT-QD04G-LR8 |
| Package Type | QSFP-DD |
| Data Rate | 400Gbps (8×53.125Gb/s PAM4) |
| Transmission Distance | 10km (single-mode fiber) |
| Fiber Type | Single-mode fiber (SMF) |
| Interface Type | LC |
| Modulation Format | PAM4 |
| Lane Wavelength Range | 1304.5 ~ 1317.5nm |
| Center Wavelength | 1310nm |
| Extinction Ratio (ER) | ≥3.5dB |
| Average Launch Power (per lane) | -5.9 ~ 4dBm |
| Receiver Power (OMA, per lane) | -4.2dBm |
| Receiver Sensitivity (OMA, per lane) | -4.4dBm |
| Stressed Receiver Sensitivity (OMA, per lane) | -1.9dBm |
| RSSI Accuracy | ±2dB |
| LOS Assert | -15dBm |
| LOS De-Assert | -8.9dBm |
| LOS Hysteresis | 1.5dB |
| Relative Intensity Noise (RIN) | -136dB/Hz |
| Side-mode Suppression Ratio (SMSR) | ≥30dB |
| Optical Return Loss Tolerance | 21dB |
| Transmitter Reflectance | -26dB |
| Receiver Reflectance | -26dB |
| Damage Threshold | 5dBm |
| Average Launch Power OFF (per lane) | -30dBm |
| Operating Temperature | Commercial (0°C ~ 70°C) |
| Supply Voltage | 3.3V |
| DDM Function | Supported |
Pin Assignment
| Pin No. | Logic Symbol | Name/Description |
|---|---|---|
| 1 | GND | Ground |
| 2 | Tx2n | Transmitter Inverted Data Input |
| 3 | Tx2p | Transmitter Non-Inverted Data Input |
| 4 | GND | Ground |
| 5 | Tx4n | Transmitter Inverted Data Input |
| 6 | Tx4p | Transmitter Non-Inverted Data Input |
| 7 | GND | Ground |
| 8 | ModSelL | Module Select |
| 9 | ResetL | Module Reset |
| 10 | VccRx | +3.3V Power Supply Receiver |
| 11 | SCL | TWI Serial Interface Clock |
| 12 | SDA | TWI Serial Interface Data |
| 13 | GND | Ground |
| 14 | Rx3p | Receiver Non-Inverted Data Output |
| 15 | Rx3n | Receiver Inverted Data Output |
| 16 | GND | Ground |
| 17 | Rx1p | Receiver Non-Inverted Data Output |
| 18 | Rx1n | Receiver Inverted Data Output |
| 19 | GND | Ground |
| 20 | GND | Ground |
| 21 | Rx2n | Receiver Inverted Data Output |
| 22 | Rx2p | Receiver Non-Inverted Data Output |
| 23 | GND | Ground |
| 24 | Rx4n | Receiver Inverted Data Output |
| 25 | Rx4p | Receiver Non-Inverted Data Output |
| 26 | GND | Ground |
| 27 | ModPrsL | Module Present |
| 28 | IntL/RxLOS | Interrupt/Optional RxLOS |
| 29 | VccTx | +3.3V Power Supply Transmitter |
| 30 | Vcc1 | +3.3V Power Supply |
| 31 | LPMode/TxDis | Low Power Mode/Optional TX Disable |
| 32 | GND | Ground |
| 33 | Tx3p | Transmitter Non-Inverted Data Input |
| 34 | Tx3n | Transmitter Inverted Data Input |
| 35 | GND | Ground |
| 36 | Tx1p | Transmitter Non-Inverted Data Input |
| 37 | Tx1n | Transmitter Inverted Data Input |
| 38 | GND | Ground |
| 39 | GND | Ground |
| 40 | Tx6n | Transmitter Inverted Data Input |
| 41 | Tx6p | Transmitter Non-Inverted Data Input |
| 42 | GND | Ground |
| 43 | Tx8n | Transmitter Inverted Data Input |
| 44 | Tx8p | Transmitter Non-Inverted Data Input |
| 45 | GND | Ground |
| 46 | P/VS4 | Programmable/Module Vendor Specific 4 |
| 47 | P/VS1 | Programmable/Module Vendor Specific 1 |
| 48 | VccRx1 | 3.3V Power Supply |
| 49 | P/VS2 | Programmable/Module Vendor Specific 2 |
| 50 | P/VS3 | Programmable/Module Vendor Specific 3 |
| 51 | GND | Ground |
| 52 | Rx7p | Receiver Non-Inverted Data Output |
| 53 | Rx7n | Receiver Inverted Data Output |
| 54 | GND | Ground |
| 55 | Rx5p | Receiver Non-Inverted Data Output |
| 56 | Rx5n | Receiver Inverted Data Output |
| 57 | GND | Ground |
| 58 | GND | Ground |
| 59 | Rx6n | Receiver Inverted Data Output |
| 60 | Rx6p | Receiver Non-Inverted Data Output |
| 61 | GND | Ground |
| 62 | Rx8n | Receiver Inverted Data Output |
| 63 | Rx8p | Receiver Non-Inverted Data Output |
| 64 | GND | Ground |
| 65 | NC | No Connect |
| 66 | Reserved | Reserved for Future Use |
| 67 | VccTx1 | 3.3V Power Supply |
| 68 | Vcc2 | 3.3V Power Supply |
| 69 | ePPS/Clock | 1PPS PTP Clock or Reference Clock Input |
| 70 | GND | Ground |
| 71 | Tx7p | Transmitter Non-Inverted Data Input |
| 72 | Tx7n | Transmitter Inverted Data Input |
| 73 | GND | Ground |
| 74 | Tx5p | Transmitter Non-Inverted Data Input |
| 75 | Tx5n | Transmitter Inverted Data Input |
| 76 | GND | Ground |
Ordering Information
| Part Number | Product Description |
|---|---|
| SPT-QD04G-LR8 | QSFP-DD 400G-LR8 Optical Transceiver, 1310nm Wavelength, 10km Transmission Distance, Single-Mode Fiber, PAM4 Modulation, LC Interface with DDM, Commercial Temperature |
Applications
- 400G Ethernet
- Long-distance data center interconnects
- Cloud computing infrastructure
- High-performance computing networks
- 400G backbone networks
- Metropolitan area networks
Contact Information
Email: info@sopto.com.cn
Web: http://www.sopto.com.cn
Note: For customized solutions, please contact us.
