GPON ONU SFP Module
Product Features
Operating Condition
Characteristics
All performance is specified at whole working temperature and conditions
Burst Mode Transmitter Timing (D23446-SSCA, TX_Burst signal low active transmitter on)
PIN Definition
Ordering Information
Product Features
- Support ITU-T 984.2/984.5 GPON Networks application
- Single fiber bi-directional data links with asymmetric 1.244Gbps Tx and 2.488Gbps Rx
- 1310nm burst-mode transmitter with DFB laser
- 1490nm continuous-mode receiver with APD-TIA
- 2-wire interface for integrated digital diagnostic Monitoring
- Transmitter state indication (TX_SD)
- SFP package with SC/UPC receptacle optical interface
- Single +3.3V power supply
- Operation case temperature -40~85°C for industrial and -10~70°C for commercial
- RoHS6 compliance
Operating Condition
| Parameter | Unit | Min. | Typical | Max. |
| Storage Temperature | °C | -40 | 85 | |
| Operating Case Temp for C-temp | °C | 0 | 70 | |
| Operating Case Temp for I-temp | °C | -40 | 85 | |
| Power Supply Voltage | V | 3.15 | 3.3 | 3.45 |
| Supply Current | mA | 200 | 400 | |
| Bit Rate for Tx | Gbps | 1.244 | ||
| Bit Rate for Rx | Gbps | 2.488 | ||
Characteristics
All performance is specified at whole working temperature and conditions
| Parameter | Unit | Min. | Typical | Max. |
| Transmitter | ||||
| TX Central Wavelength | nm | 1290 | 1310 | 1330 |
| Spectral Width (-20dB) | nm | 1 | ||
| Side Mode Suppression Ratio (SMSR) | dB | 30 | ||
| Mean Launched Power | dBm | 0.5 | 5 | |
| Mean Launched Power (TX Off) | dBm | -45 | ||
| Extinction Ratio | dB | 10 | ||
| Optical Return Loss Tolerance | dB | -15 | ||
| Transmitter and dispersion Penalty | dB | 1 | ||
| Transmitter Mask (PRBS223-1@1.244G) | Compliant With ITU-T G984.2 | |||
| Receiver | ||||
| Receive Wavelength | nm | 1480 | 1490 | 1500 |
| Sensitivity (PRBS223-1@2.488G, ER=8.2, BER<10-10) | dBm | -28 | ||
| Overload (PRBS223-1@2.488G, ER=8.2, BER<10-10) | dBm | -8 | ||
| Loss of signal De-assert Level | dBm | -29 | ||
| Loss of signal assert Level | dBm | -39 | ||
| LOS Hysteresis | dB | 0.5 | 6 | |
| WDM Filter isolation to 1441 nm ~1450 nm,1530 nm ~1539 nm | dB | 25 | ||
| WDM Filter isolation to 1250 nm ~1441 nm,1539 nm~ 1625 nm | dB | 36 | ||
| Electrical Interface Characteristics | ||||
| Data Input Swing Differential/TX | mV | 200 | - | 2000 |
| Data Output Swing Differential/RX | mV | 400 | 1600 | |
| Date Differential Impedance | Ω | 90 | 100 | 110 |
| LVTTL Output High | V | 2.4 | Vcc | |
| LVTTL Output Low | V | 0 | 0.4 | |
| LVTTL Input High | V | 2.0 | Vcc+0.3 | |
| LVTTL Input Low | V | 0 | 0.8 | |
| Timing Characteristics | ||||
| Turn On Time at Burst mode (TON) | ns | 12.8 | ||
| Turn Off Time at Burst mode (TOFF) | ns | 12.8 | ||
| TX-SD Assert Time (TTXSD_ON) | ns | 100 | ||
| TX-SD De-assert Time (TTXSD_OFF) | ns | 100 | ||
| LOS Assert Time (TLOSA) | us | 100 | ||
| LOS De-assert Time (TLOSD) | us | 100 | ||
Burst Mode Transmitter Timing (D23446-SSCA, TX_Burst signal low active transmitter on)
PIN Definition
| Pin No. | Symbol | Level / Logic | Description |
| 1 | VeeT | Module Transmitter Ground | |
| 2 | Tx_Fault | LVTTL-O | Module Transmitter Fault |
| 3 | Tx_Burst | LVTTL-I | Transmitter Burst Control, D23446-SSC(H)A active low for transmitter on D23446-SSC(H)B active high for transmitter on |
| 4 | SDA | LVTTL-I | 2-Wire Serial Interface Data Line |
| 5 | SCL | LVTTL-I/O | 2-Wire Serial Interface Clock |
| 6 | MOD_ABS | LVTTL-O | Module Absent, connected to ground in the module |
| 7 | TX_SD | LVTTL-O | Tx Signal Detect, active high when transmitter on |
| 8 | RX_LOS | LVTTL-O | Loss of Receiver Signal Indication |
| 9 | NC | ||
| 10 | VeeR | Module Receiver Ground | |
| 11 | VeeR | Module Receiver Ground | |
| 12 | RD- | CML-O | Receiver Inverted Data Output, AC-coupled |
| 13 | RD+ | CML-O | Receiver Non-Inverted Data Output, AC-coupled |
| 14 | VeeR | Module Receiver Ground | |
| 15 | VccR | Module Receiver 3.3V Supply | |
| 16 | VccT | Module Transmitter 3.3V Supply | |
| 17 | VeeT | Module Transmitter Ground | |
| 18 | TD+ | LVPECL-I | Transmitter Non-Inverted Data Input, DC-coupled |
| 19 | TD- | LVPECL-I | Transmitter Inverted Data Input, DC-coupled |
| 20 | VeeT | Module Transmitter Ground |
Ordering Information
| Ordering P/Ns | Description |
| L LAGU-T31S-20B+(C) | GPON SFP ONU, B+,1.244Gbps Tx 1310nm, 2.488Gbps Rx 1490nm, TX_Burst signal high active transmitter on, SFP form-factor, SC/UPC receptacle connector, Commercial temperature |
| L LAGU-T31S-20B+(I) | GPON SFP ONU, B+,1.244Gbps Tx 1310nm, 2.488Gbps Rx 1490nm, TX_Burst signal high active transmitter on, SFP form-factor, SC/UPC receptacle connector, Industrial temperature |