ASCENT’s SFP-AG-LP-51-40 Small Form Factor Pluggable (SFP) transceivers are compatible with the Small Form Factor Pluggable Multi-Sourcing Agreement (MSA). The transceiver consists of five sections: the LD driver, the limiting amplifier, the digital diagnostic monitor, the DFB laser and the PIN photo-detector .The module data link is capable of distances up to 40 km on 9/125 µm single-mode fiber.
• Up to 1.25 Gbps data links
• DFB laser transmitter and PIN photo-detector
• Up to 40km on 9/125 µm SMF
• Hot-pluggable SFP footprint
• Duplex LC/UPC type pluggable optical interface
• Low power dissipation
• Metal enclosure, for lower EMI
• RoHS compliant and lead-free
• Single +3.3 V power supply
• Supports Digital Diagnostic Monitoring interface
• Compliant with SFF-8472
Absolute Maximum Ratings
Parameter | Symbol | Min. | Typ. | Max. | Unit | Notes |
Storage Temperature | Ts | ‑40 | 85 | °C | ||
Relative Humidity | RH | 5 | 95 | % | ||
Power Supply Voltage | Vcc | ‑0.5 | 4.0 | V | ||
Signal Input Voltage | ‑0.3 | Vcc+0.3 | V | |||
Receiver Damage Threshold | +5 | dBm |
Recommended Operating Conditions
Parameter | Symbol | Min. | Typ. | Max. | Unit | Notes |
Case Operating Temperature | Tcase | ‑0 | 70 | °C | ||
Power Supply Voltage | VCC | 3.13 | 3.3 | 3.47 | V | |
Power Supply Current | ICC | 280 | mA | |||
Power Supply Noise Rejection | 100 | mVp‑p | ||||
Data Rate | BR | 1250/1250 | Gbps | TX rate/RX rate | ||
Transmission Distance | TD | 40 | km | |||
Coupled Fiber | Single‑mode fiber | 9/125 µm SMF |
Transmitter Specifications
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note | |
Average Output Power | POUT | ‑5 | 0 | dBm | Note (1) | ||
Extinction Ratio | ER | 9 | dB | ||||
Center Wavelength | λC | 1530 | 1550 | 1570 | nm | DFB Laser | |
Side Mode Suppression Ratio | SMSR | 30 | dB | ||||
Spectrum Bandwidth (‑20 dB) | σ | 1 | nm | ||||
Transmitter OFF Output Power | POFF | ‑45 | dBm | ||||
Differential Line Input Impedance | RIN | 90 | 100 | 110 | Ω | ||
Output Eye Mask | Compliant with IEEE802.3 z (class 1 laser safety) | Note (2) | |||||
Note:
1. Measure at 2^7‑1 NRZ PRBS pattern
2. Transmitter eye mask definition
Receiver Specifications
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Input Optical Wavelength | λIN | 1270 | 1610 | nm | PIN‑TIA | |
Receiver Sensitivity | PIN | ‑24 | dBm | Note (1) | ||
Input Saturation Power (Overload) | PSAT | ‑1 | dBm | |||
LOS De‑assert | LOSD | ‑25 | dBm | |||
LOS Assert | LOSA | ‑38 | dBm | Note (2) | ||
LOS Hysteresis | 0.5 | 2 | 6 | dB |
Note:
1. Measured with Light source 1550nm, ER=9dB; BER =<10^‑12 @PRBS=2^7‑1 NRZ.
2. When LOS de‑asserted, the RX data+/‑ output is high‑level (fixed)
Electrical Interface Characteristics
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Transmitter | ||||||
Total Supply Current | ICC | A | mA | Note (1) | ||
Transmitter Disable Input‑High | VDISH | 2 | Vcc+0.3 | V | ||
Transmitter Disable Input‑Low | VDISL | 0 | 0.8 | V | ||
Transmitter Fault Input‑High | VTxFH | 2 | Vcc+0.3 | V | ||
Transmitter Fault Input‑Low | VTxFL | 0 | 0.8 | V | ||
Receiver | ||||||
Total Supply Current | ICC | B | mA | Note (1) | ||
LOSS Output Voltage‑High | VLOSH | 2 | Vcc+0.3 | V | LVTTL | |
LOSS Output Voltage‑Low | VLOSL | 0 | 0.8 | V |
Note:
1. A (TX) + B (RX) = 280 mA (Not including termination circuit)
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