Alpha Bridge ASFP28-25G-2733B-LR
Features
- Compliant to 3cc 25GBASE-LR
- Up to 78 Gb/s data links
- DFB transmitter, PIN photo-detector
- Single LC Connector for bi-directional application
- Electrical interface compliant to SFF-8431 MSA
- 2-wire interface for management specifications compliant with SFF-8472 digital diagnostic monitoring interface for optical transceivers
- Operating case temperature: -40 to 85°C
- All-metal housing for superior EMI performance
- Maximum power consumption 5W
- Advanced firmware allow customer system encryption information to be stored in transceiver
- RoHS compliant
Absolute Maximum Ratings
Parameter | Symbol | Min. | Max. | Units |
Supply Voltage | Vcc | 0 | 3.6 | V |
Storage Temperature | Ts | -40 | 85 | °C |
Operating Case Temperature | Ti | -40 | 85 | °C |
Relative Humidity | RH | 0 | 85 | % |
Damage Threshold | THd | 3.5 | - | dBm |
Recommended Operating Conditions
Parameter | Symbol | Min. | Typ. | Max. | Units | Notes |
Case Operating Temperature | Tc | -40 | 85 | °C | ||
Power Supply Voltage | Vcc | 3.135 | 3.3 | 3.465 | V | |
Data Rate, each Lane | 24.3 | 25.78125 | Gb/s | |||
Data Rate Accuracy | -100 | 100 | ppm | |||
Control Input Voltage High | 2 | Vcc | V | |||
Control Input Voltage Low | 0 | 0.8 | V | |||
Link Distance with G.652 | D | 0.002 | 10 | km | 1 |
Digital Diagnostics Functions
Parameter | Symbol | Accuracy | Unit | Notes |
Temperature monitor absolute error | DMI_Temp | ± 3 | oC | Over operating Temp |
Laser power monitor absolute error | DMI_TX | ± 2 dB | dB | 1 |
RX power monitor absolute error | DMI_RX | ± 2 dB | dB | 1 |
Supply voltage monitor absolute error | DMI_VCC | ±0.1 | V | Full operating range |
Bias Current monitor | DMI_Ibias | ± 10% | mA |
Transmitter Electro-optical Characteristics
Parameter | Symbol | Min. | Typ. | Max. | Units | Note |
Power Consumption | 1.5 | W | ||||
Supply Current | Icc | 450 | mA | |||
Overload Differential Voltage pk-pk | TP1a | 900 | mV | |||
Common Mode Voltage (Vcm) | TP1 | -350 | 2850 | mV | 1 | |
Differential Termination Resistance Mismatch | TP1 | 10 | % | At 1MHz | ||
Differential Return Loss (SDD11) | TP1 | See CEI-28G-VSR Equation 13-19 | dB | |||
Common Mode to Differential conversion and Differential to Common Mode conversion (SDC11, SCD11) | TP1 | See CEI-28G-VSR Equation 13-19 | dB | |||
Stressed Input Test | TP1a | See CEI-28G-VSR Section 13.3.11.2.1 | ||||
Center Wavelength | λt | Ref order information | nm | |||
Center Wavelength Stability | ΔλD | -6.5 | 6.5 | nm | ||
Side Mode Suppression Ratio | SMSR | 30 | dB | |||
Average Optical Power | Pavg | -7 | 2 | dBm | 2 | |
Laser Off Power | Poff | -20 | dBm | |||
Optical Modulation Amplitude | OMA | -4 | 2 | dBm | 3 | |
Launch power in OMA minus TDP | OMA-TDP | -5 | dBm | |||
Transmitter and dispersion penalty (TDP), | TDP | dB | ||||
Extinction Ratio | ER | 3 | dB | |||
Optical Return Loss Tolerance | OTL | 20 | dB | |||
Transmitter Reflectance | TR | -26 | dB | |||
Relative Intensity Noise | RIN20OMA | -130 | dB/Hz | |||
Eye Mask {X1, X2, X3, Y1, Y2, Y3} | {0.31, 0.4, 0.45, 0.34, 0.38, 0.4} | 3 |
Receiver Electro-optical Characteristics
Parameter | Symbol | Min. | Typ. | Max. | Units | Note |
Differential Voltage, pk-pk | TP4 | 900 | mV | |||
Common Mode Voltage (Vcm) | TP4 | -350 | 2850 | mV | 1 | |
Common Mode Noise, RMS | TP4 | 17.5 | mV | |||
Differential Termination Resistance Mismatch | TP4 | 10 | % | At 1MHz | ||
Differential Return Loss (SDD22) | TP4 | See CEI-28G-VSR Equation 13-19 | dB | |||
Common Mode to Differential conversion and Differential to Common Mode conversion (SDC22, SCD22) | TP4 | See CEI-28G-VSR Equation 13-21 | dB | |||
Common Mode Return Loss (SCC22) | TP4 | -2 | dB | 2 | ||
Transition Time, 20 to 80% | TP4 | 9.5 | ps | |||
Vertical Eye Closure (VEC) | TP4 | 5 | dB | |||
Eye Width at 10-15 probability (EW15) | TP4 | 0.57 | UI | |||
Eye Height at 10-15 probability (EH15) | TP4 | 228 | mV | |||
Center Wavelength | λr | nm | ||||
Damage Threshold | THd | 3 | dBm | 3 | ||
Average Receive Power | -13.3 | 2 | dBm | 4 | ||
Receive Power (OMA) | - | dBm | ||||
UnStressed Receiver Sensitivity (OMA) | SEN | -11.3 | dBm | 5 | ||
Receiver Reflectance | RR | -26 | dB | |||
LOS Assert | LOSA | -30 | dBm | |||
LOS Deassert | LOSD | -13 | dBm | |||
LOS Hysteresis | LOSH | 0.5 | dB |
Pin Descriptions
PIN | Logic | Symbol | Name / Description | Note |
1 | VeeT | Module Transmitter Ground | 1 | |
2 | LVTTL-O | TX_Fault | Module Transmitter Fault | |
3 | LVTTL-I | TX_Dis | Transmitter Disable; Turns off transmitter laser output | |
4 | LVTTL-I/O | SDA | 2-Wire Serial Interface Data Line | 2 |
5 | LVTTL-I | SCL | 2-Wire Serial Interface Clock | 2 |
6 | Mod_ABS | Module Absent, connected to VeeT or VeeR in the module | ||
7 | LVTTL-I | RS0 | Receiver Rate Select (not used) | |
8 | LVTTL-O | RX_LOS | Receiver Loss of Signal Indication Active LOW | |
9 | LVTTL-I | RS1 | Transmitter Rate Select (not used) | |
10 | VeeR | Module Receiver Ground | 1 | |
11 | VeeR | Module Receiver Ground | 1 | |
12 | CML-O | RD- | Receiver Inverted Data Output | |
13 | CML-O | RD+ | Receiver Data Output | |
14 | VeeR | Module Receiver Ground | 1 | |
15 | VccR | Module Receiver 3.3 V Supply | ||
16 | VccT | Module Receiver 3.3 V Supply | ||
17 | VeeT | Module Transmitter Ground | 1 | |
18 | CML-I | TD+ | Transmitter Non-Inverted Data Input | |
19 | CML-I | TD- | Transmitter Inverted Data Input | |
20 | VeeT | Module Transmitter Ground | 1 |
Ordering Information
Model Number | Part Number | Reach | TX/RX | Temperature |
ASFP28-25G-2733B-LR | OPAX-W10-27-IB | 10 km | 1270/1330 | 0°C to 70 °C |
ASFP28-25G-2733B-LR-I | OPAX-W10-27-IB | 10 km | 1270/1330 | -40°C to 85 °C |
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