Alpha Bridge AB-QSFP28-80P Datasheet
Product function
- Hot pluggable QSFP28 MSA form factor
- Up to 80km reach for 652 SMF with transport white box
- Single +3.3V power supply
- Temperature Range 0 to 85°C
- Transmitter: Cooled EML 2*27.5Gbaud/s DWDM TOSA
- Receiver: 2*27.5Gbaud/s Pin-PD ROSA
- 4*25G CAUI4 electrical interface
- Integrated SFEC with high coding gain
- PAM4 modulation format on 100GHz ITU DWDM wavelength grid compatible
- Dual CS adaptor
- Compatible with RoHS6
Product Application
- High bandwidth connectivity for Data Center Interconnection
- 100G Ethernet Metro-Access over DWDM
- P to P Access Network
Absolute Maximum Ratings
| Parameter | Symbol | Unit | Min | Max |
| Storage Temperature Range | Ts | oC | -40 | +85 |
| Relative Humidity | RH | % | 5 | 85 |
| Power Supply Voltage | Vcc | V | -0.5 | +3.6 |
| Operating Case Temperature Range | Tc | oC | 0 | +85 |
| Receiver Damage Threshold Per Lane | Pdag | dBm | +2 |
Recommended Operating Conditions
| Parameter | Units | MIN. | TYP. | MAX. | Notes |
| Operating Case Temperature | °C | 0 | +85 | ||
| Power Supply Voltage | V | 3.135 | 3.3 | 3.465 | |
| Control Input Voltage High | V | 2 | Vcc+0.3 | ||
| Control Input Voltage Low | V | -0.3 | 0.8 | ||
| Rx Diff Data Output Load | Ω | 100 | |||
| Power Dissipation | W | 7 | Tc = 85 °C, Vcc = 3.465V, End of Life |
Transmitter Electrical Specification (TP1)
| Parameter | Comment | Min | Typ. | Max | Unit |
| Signaling Rate, each lane | Typ -100 ppm | 25.7813 | Typ +100 ppm | Gb/s | |
| DC Common Mode Output Voltage | -350 | --- | 2850 | mV | |
| Differential Return Loss | See template1 | --- | --- | --- | dB |
| Common to Differential Mode Conversion Return Loss | See template2 | --- | --- | --- | dB |
| Differential Termination Mismatch | At 1 MHz | --- | --- | 10 | % |
Receiver Electrical Specification (TP4)
| Parameter | Comment | Min | Typ. | Max | Unit |
| Signaling Rate, each lane | Typ - 100 ppm | 25.7813 | Typ + 100 ppm | Gb/s | |
| Common-Mode AC Output Voltage | --- | --- | 17.5 | mV | |
| Differential pk-pk output voltage swing | --- | --- | 900 | mVpp | |
| Eye Width | EW15 at 10-15 probability; PRBS 29-1 | 0.57 | --- | --- | UI |
| Eye Height Differential | EH15 at 10-15 probability; PRBS 29-1 | 228 | --- | --- | mV |
| Vertical Eye Closure | --- | --- | 5.5 | dB | |
| Differential Output Return Loss | See template1 | --- | --- | --- | dB |
| Common to Differential Mode Conversion Return Loss | See template2 | --- | --- | --- | dB |
| Differential Termination Mismatch | --- | --- | 10 | % | |
| Transition Time (20% to 80%) | 12 | --- | --- | ps | |
| DC Common Mode Voltage3 | -350 | --- | 2850 | mV |
Transmitter Optical Specification (TP2)
| Parameter | Units | Min. | Typ. | Max. | Notes |
| Optical output power | dBm | -1 | +4 | ||
| Transmitter Rate | Gbps | 55.04318 | 55.04318*2λ | ||
| Lane center wavelength spacing | GHz | 100 | |||
| Center wavelength | nm | See Wavelength Table | |||
| Extinction ratio | dB | 6 | |||
| Side-mode suppression Ratio | dB | 30 | |||
| RIN OMA | dB/Hz | -132 | |||
| Optical Return Loss Tolerance | dB | 20 | |||
| Transmitter reflectance | dB | -12 | |||
| Dispersion Tolerance | ps/nm | -150 | 50 | Amplified Link | |
| -150 | 100 | Unamplified Link | |||
Receiver Optical Specification (TP3)
| Parameter | Units | Min. | Typ. | Max. | Notes |
| Receive Rate | Gbps | 55.04318 | 55.04318*2λ | ||
| Center Wavelength | nm | See Wavelength Table | |||
| Receiver reflectance | dB | -26 | |||
| Receiver Sensitivity, each lane | dBm | -13 | |||
| Required OSNR | dB | 26.5 | Receiving Power @0~-7dBm | ||
| 29.5 | Receiving Power @-7~-13dBm | ||||
| RSSI Accuracy | dB | -3 | 3 | ||
Wavelength Table:
| Product Code | TX1 | TX2 | ||||
| Ch. No. | Frequency (THz) | Center Wavelength(nm) | Ch. No. | Frequency (THz) | Center Wavelength(nm) | |
| RTXM290-9813 | C13 | 191.30 | 1567.13 | C14 | 191.40 | 1566.31 |
| RTXM290-9814 | C13+ | 191.35 | 1566.72 | C14+ | 191.45 | 1565.90 |
| RTXM290-9815 | C15 | 191.50 | 1565.50 | C16 | 191.60 | 1564.68 |
| RTXM290-9816 | C15+ | 191.55 | 1565.09 | C16+ | 191.65 | 1564.27 |
| RTXM290-9817 | C17 | 191.70 | 1563.86 | C18 | 191.80 | 1563.05 |
| RTXM290-9818 | C17+ | 191.75 | 1563.45 | C18+ | 191.85 | 1562.64 |
| RTXM290-9819 | C19 | 191.90 | 1562.23 | C20 | 192.00 | 1561.42 |
| RTXM290-9820 | C19+ | 191.95 | 1561.83 | C20+ | 192.05 | 1561.01 |
| RTXM290-9821 | C21 | 192.10 | 1560.61 | C22 | 192.20 | 1559.79 |
| RTXM290-9822 | C21+ | 192.15 | 1560.20 | C22+ | 192.25 | 1559.39 |
| RTXM290-9823 | C23 | 192.30 | 1558.98 | C24 | 192.40 | 1558.17 |
| RTXM290-9824 | C23+ | 192.35 | 1558.58 | C24+ | 192.45 | 1557.77 |
| RTXM290-9825 | C25 | 192.50 | 1557.36 | C26 | 192.60 | 1556.55 |
| RTXM290-9826 | C25+ | 192.55 | 1556.96 | C26+ | 192.65 | 1556.15 |
| RTXM290-9827 | C27 | 192.70 | 1555.75 | C28 | 192.80 | 1554.94 |
| RTXM290-9828 | C27+ | 192.75 | 1555.34 | C28+ | 192.85 | 1554.54 |
| RTXM290-9829 | C29 | 192.90 | 1554.13 | C30 | 193.00 | 1553.33 |
| RTXM290-9830 | C29+ | 192.95 | 1553.73 | C30+ | 193.05 | 1552.93 |
| RTXM290-9831 | C31 | 193.10 | 1552.52 | C32 | 193.20 | 1551.72 |
| RTXM290-9832 | C31+ | 193.15 | 1552.12 | C32+ | 193.25 | 1551.32 |
| RTXM290-9833 | C33 | 193.30 | 1550.92 | C34 | 193.40 | 1550.12 |
| RTXM290-9834 | C33+ | 193.35 | 1550.52 | C34+ | 193.45 | 1549.72 |
| RTXM290-9835 | C35 | 193.50 | 1549.32 | C36 | 193.60 | 1548.51 |
| RTXM290-9836 | C35+ | 193.55 | 1548.91 | C36+ | 193.65 | 1548.11 |
| RTXM290-9837 | C37 | 193.70 | 1547.72 | C38 | 193.80 | 1546.92 |
| RTXM290-9838 | C37+ | 193.75 | 1547.32 | C38+ | 193.85 | 1546.52 |
| RTXM290-9839 | C39 | 193.90 | 1546.12 | C40 | 194.00 | 1545.32 |
| RTXM290-9840 | C39+ | 193.95 | 1545.72 | C40+ | 194.05 | 1544.92 |
| RTXM290-9841 | C41 | 194.10 | 1544.53 | C42 | 194.20 | 1543.73 |
| RTXM290-9842 | C41+ | 194.15 | 1544.13 | C42+ | 194.25 | 1543.33 |
| RTXM290-9843 | C43 | 194.30 | 1542.94 | C44 | 194.40 | 1542.14 |
| RTXM290-9844 | C43+ | 194.35 | 1542.54 | C44+ | 194.45 | 1541.75 |
| RTXM290-9845 | C45 | 194.50 | 1541.35 | C46 | 194.60 | 1540.56 |
| RTXM290-9846 | C45+ | 194.55 | 1540.95 | C46+ | 194.65 | 1540.16 |
| RTXM290-9847 | C47 | 194.70 | 1539.77 | C48 | 194.80 | 1538.98 |
| RTXM290-9848 | C47+ | 194.75 | 1539.37 | C48+ | 194.85 | 1538.58 |
| RTXM290-9849 | C49 | 194.90 | 1538.19 | C50 | 195.00 | 1537.40 |
| RTXM290-9850 | C49+ | 194.95 | 1537.79 | C50+ | 195.05 | 1537.00 |
| RTXM290-9851 | C51 | 195.10 | 1536.61 | C52 | 195.20 | 1535.82 |
| RTXM290-9852 | C51+ | 195.15 | 1536.22 | C52+ | 195.25 | 1535.43 |
| RTXM290-9853 | C53 | 195.30 | 1535.04 | C54 | 195.40 | 1534.25 |
| RTXM290-9854 | C53+ | 195.35 | 1534.64 | C54+ | 195.45 | 1533.86 |
| RTXM290-9855 | C55 | 195.50 | 1533.47 | C56 | 195.60 | 1532.68 |
| RTXM290-9856 | C55+ | 195.55 | 1533.07 | C56+ | 195.65 | 1532.29 |
| RTXM290-9857 | C57 | 195.70 | 1531.90 | C58 | 195.80 | 1531.12 |
| RTXM290-9858 | C57+ | 195.75 | 1531.51 | C58+ | 195.85 | 1530.72 |
| RTXM290-9859 | C59 | 195.90 | 1530.33 | C60 | 196.00 | 1529.55 |
| RTXM290-9860 | C59+ | 195.95 | 1529.94 | C60+ | 196.05 | 1529.16 |
Electric Ports Definition
| No | Pin | Definition | Description | Note |
| 1 | 1 | GND | Ground | 1 |
| 2 | 2 | Tx2n | Transmitter Inverted Data Input | |
| 3 | 3 | Tx2p | Transmitter Non-Inverted Data Input | |
| 4 | 4 | GND | Ground | 1 |
| 5 | 5 | Tx4n | Transmitter Inverted Data Input | |
| 6 | 6 | Tx4p | Transmitter Non-Inverted Data Input | |
| 7 | 7 | GND | Ground | 1 |
| 8 | 8 | ModSelL | Module Select | |
| 9 | 9 | ResetL | Module Reset | |
| 10 | 10 | VccRx | +3.3V Power Supply Receiver | 2 |
| 11 | 11 | SCL | 2-Wire Serial Interface Clock | |
| 12 | 12 | SDA | 2-Wire Serial Interface Data | |
| 13 | 13 | GND | Ground | 1 |
| 14 | 14 | Rx3p | Receiver Non-Inverted Data Output | |
| 15 | 15 | Rx3n | Receiver Inverted Data Output | |
| 16 | 16 | GND | Ground | 1 |
| 17 | 17 | Rx1p | Receiver Non-Inverted Data Output | |
| 18 | 18 | Rx1n | Receiver Inverted Data Output | |
| 19 | 19 | GND | Ground | 1 |
| 20 | 20 | GND | Ground | 1 |
| 21 | 21 | Rx2n | Receiver Inverted Data Output | |
| 22 | 22 | Rx2p | Receiver Non-Inverted Data Output | |
| 23 | 23 | GND | Ground | 1 |
| 24 | 24 | Rx4n | Receiver Inverted Data Output | |
| 25 | 25 | Rx4p | Receiver Non-Inverted Data Output | |
| 26 | 26 | GND | Ground | 1 |
| 27 | 27 | ModPrsL | Module Present | |
| 28 | 28 | IntL | Interrupt | |
| 29 | 29 | VccTx | +3.3 V Power Supply transmitter | 2 |
| 30 | 30 | Vcc1 | +3.3 V Power Supply | 2 |
| 31 | 31 | LPMode | Low Power Mode | |
| 32 | 32 | GND | Ground | 1 |
| 33 | 33 | Tx3p | Transmitter Non-Inverted Data Input | |
| 34 | 34 | Tx3n | Transmitter Inverted Data Input | |
| 35 | 35 | GND | Ground | 1 |
| 36 | 36 | Tx1p | Transmitter Non-Inverted Data Input | |
| 37 | 37 | Tx1n | Transmitter Inverted Data Input | |
| 38 | 38 | GND | Ground | 1 |
DDM accuracy:
| Parameters | Unit | Requirements | Note |
| Temperature | ℃ | +/-3 | |
| voltage | V | +/-5% | |
| Ibias | mA | +/-10% | |
| Rx power | dB | +/-3.0 | |
| Tx power | dB | +/-3.0 |
DDM Alarm & warning threshold is listed below:
| Parameters | Unit | Requirements | Description |
| Temp low warning | ℃ | 0 | Min. case temperature |
| Temp high warning | ℃ | 83 | Max. case temperature |
| Voltage low warning | V | 3.135 | -5% Vcc target |
| Voltage high warning | V | 3.465 | +5% Vcc target |
| Tx power low warning | dBm | -1 | Min. optical power in DS. |
| Tx power high warning | dBm | 4 | Max. optical power in DS. |
| Rx power low warning | dBm | -12.5 | Sensitivity |
| Rx power high warning | dBm | 4.2 | Overload |
| Temp low alarm | ℃ | -10 | Warning-10℃ |
| Temp high alarm | ℃ | +88 | Warning+10℃ |
| Voltage low alarm | V | 2.97 | -10% Vcc target |
| Voltage high alarm | V | 3.63 | +10% Vcc target |
| Tx power low alarm | dBm | -4 | Warning -3dB |
| Tx power high alarm | dBm | 7 | Warning +3dB |
| Rx power low alarm | dBm | -15.5 | Warning -3dB |
| Rx power high alarm | dBm | 7.2 | Warning +3dB |
Ordering Information
| Model | Description |
| AB-QSFP28-80P | 100G DWDM QSFP28 PAM4 80km C29 C30 100GHz CS DDM Optical Transceiver |
