GPON ONU Combo With APD Controller
GN25L98 is a low-cost combined burst mode laser driver and limiting amplifier designed for gigabit passive optical network (GPON) optical networking unit (ONU) applications. GN25L98 features automatic extinction ratio control for reliable operation of the laser over all conditions. A high accuracy auto-ranging A/D converter and on-chip temperature sensor give precise diagnostic reporting. A low-cost integrated avalanche photodiode (APD) controller enables a complete receive solution.
Applications for GN25L98 include module and BOSA-on-board ONUs. The GN25L98 forms a low-cost chipset with the GN25L53 transimpedance amplifier (TIA).
- 3.1Gbps receiver, 3.1Gbps transmitter
- Automatic mean power and extinction ratio control
- Integrated APD controller
- Temperature compensated modulation current with on-chip temperature sensor
- TX_SD and rogue ONU alarms
- Fast burst on timing
- Fast burst mode loop settling time
- GPON fiber to the home (FTTH) ONU/optical networking terminal (ONT)