Ascent’s SFP-AGLP-3149-20 transceiver is a flexible solution as an interface for switches, routers, servers, and other optical links.
• FP laser transmitter for SFP-AG-LP-3149-20
• DFB laser transmitter for SFP-AG-LP-4931-20
• PIN photo-detector
• Up to 20 km on 9/125µm SMF
• Hot-pluggable SFP footprint
• BIDI LC/UPC type pluggable optical interface
• Low power dissipation
• Metal enclosure, for lower EMI
• RoHS compliant and lead-free
• Single +3.3V power supply
• Support digital diagnostic monitoring interface
• Compliant with SFF-8472
Absolute Maximum Ratings
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Storage Temperature | Ts | ‑40 | 85 | °C | ||
Relative Humidity | RH | 5 | 95 | % | ||
Power Supply Voltage | VCC | ‑0.5 | 4 | V | ||
Signal Input Voltage | ‑0.3 | Vcc+0.3 | V | |||
Receiver Damage Threshold | 5 | dBm |
Recommended Operating Conditions
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Case Operating Temperature | Tcase | 0 | 70 | °C | Commercial | |
‑10 | 80 | Extended | ||||
‑40 | 85 | Industrial | ||||
Power Supply Voltage | VCC | 3.13 | 3.3 | 3.47 | V | |
Power Supply Current | ICC | 280 | mA | |||
Power Supply Noise Rejection | 100 | mVp‑p | 100 Hz to 1 MHz | |||
Data Rate | 1.25/1.25 | Gbps | TX Rate/RX Rate | |||
Transmission Distance | 20 | km | ||||
Coupled Fiber | Single‑mode fiber | 9/125um SMF |
Transmitter Specifications
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note | |
Average Output Power | POUT | ‑9 | ‑3 | dBm | 1 | ||
Extinction Ratio | ER | 9 | dB | ||||
Center Wavelength | λC | 1260 | 1310 | 1360 | nm | SFP‑AG‑LP‑3149‑20 | |
1470 | 1490 | 1510 | SFP‑AG‑LP‑4931‑20 | ||||
Side Mode Suppression Ratio | SMSR | 30 | 3 | dB | DFB Laser | ||
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) | 2 | |||||
Notes:
1. Measured at a 2^7‑1 NRZ PRBS pattern
2. Transmitter eye mask definition
Receiver Specifications
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Input Optical Wavelength | λIN | 1470 | 1490 | 1510 | nm | SFP‑AG‑LP‑3149‑20 |
1290 | 1310 | 1330 | SFP‑AG‑LP‑4931‑20 | |||
Receiver Sensitivity | PIN | ‑20 | dBm | 1 | ||
Input Saturation Power (Overload) | PSAT | ‑3 | dBm | |||
Loss Of Signal Assert | PA | ‑35 | dBm | |||
Loss Of Signal De‑assert | PD | ‑21 | dBm | 2 | ||
LOS Hysteresis | PA‑PD | 0.5 | 2 | 6 | dB |
Notes:
1. Measured with light source: 1490 nm (1310 nm), ER = 9 dB; BER ≤10‑12 @PRBS=27‑1 NRZ.
2. When the LOS is de‑asserted, the RX data± output is the signal output.
Electrical Interface Characteristics
Parameter | Symbol | Min. | Typ. | Max. | Unit | Note |
Transmitter | ||||||
Total Supply Current | ICC | A | mA | 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 | 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)
Regulatory Compliance
Feature | Reference | Performance |
Electrostatic Discharge (ESD) | IEC/EN 61000‑4‑2 | Compatible with standards |
Electromagnetic Interference (EMI) | FCC Part 15 Class B EN 55022 Class B (CISPR 22A) | Compatible with standards |
Laser Eye Safety | FDA 21CFR 1040.10, 1040.11 IEC/EN 60825‑1, 2 | Class 1 laser product |
Component Recognition | IEC/EN 60950, UL | Compatible with standards |
ROHS | 2002/95/EC | Compatible with standards |
EMC | EN61000‑3 | Compatible with standards |
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