GENERAL DESCRIPTION

The OQ2545 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.

FEATURES

• Differential 50 Ω inputs for direct connection to Current-Mode Logic (CML) outputs

• Internal retiming to minimize jitter (OQ2545HP only)

• Input clock phase margin of 320° at 2.5 Gbits/s (OQ2545HP only)

• RF output current sinking capability of 60 mA

• Bias output current sinking capability of 100 mA

• TTL compatible control inputs

• Loop mode for system testing

• Continuous output monitoring

• Power dissipation <1500 mW (for typical application)

• Low cost LQFP48 plastic package.

APPLICATIONS

• Digital fibre optical modulation driver in STM16/OC48 short, medium and long haul optical transmission systems

• Optical modulation driver in high-speed data networks

• High current driver for electro-optical converters

• High current electrical line driver.