Product Summary

The OQ2545HP is a driver IC intended to be used with a directly modulated laser diode or with an Electro Absorption Modulator (EAM) in SDH/SONET 2.5 Gbits/s optical transmission systems. The applications of the OQ2545HP are (1)Digital fibre optical modulation driver in STM16/OC48 short, medium and long haul optical transmission systems; (2)Optical modulation driver in high-speed data networks; (3)High current driver for electro-optical converters; (4)High current electrical line driver.

Parametrics

OQ2545HP absolute maximum ratings: (1)VCC supply voltage for TTL interface: -0.5 to +6.0 V; (2)VEE1 supply voltage for digital section: -6.0 to +0.5 V; (3)VEE2 supply voltage for analog section: -7.5 to +0.5 V; (4)Vn DC voltage on pins DIN, DINQ, DLOOP, DLOOPQ, CIN, CINQ, CLOOP; (5)and CLOOP: -1.0 to +0.5 V; (6)pins EFADJ, APADJ, SIMOD and SIBIAS VEE2: - 0.5 to 0.5 V; (7)pins SMOD and BGCAP VEE1: - 0.5 to 0.5 V; (8)Tj junction temperature: - 150℃; (9)Tstg storage temperature: -65 to +150℃.

Features

OQ2545HP features: (1)Differential 50Ω inputs for direct connection to Current-Mode Logic (CML) outputs; (2)Internal retiming to minimize jitter (OQ2545HP only); (3)Input clock phase margin of 320° at 2.5 Gbits/s (OQ2545HP only); (4)RF output current sinking capability of 60 mA; (5)Bias output current sinking capability of 100 mA; (6)TTL compatible control inputs; (7)Loop mode for system testing; (8)Continuous output monitoring; (9)Power dissipation <1500 mW (for typical application); (10)Low cost LQFP48 plastic package.

Diagrams

OQ2545HP block diagram

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