TZA3011BVH/C2,557

TZA3011BVH/C2,557 2. Features

2.1 Generaln A-rate™ from 30 Mbit/s to 3.2 Gbit/sn Bias current up to 100 mAn Modulation current up to 100 mAn Rise and fall times typical 80 psn Jitter below 20 ps (peak-to-peak value)n Modulation output voltage up to 2 V dynamic rangen 1.2 V minimum voltage on the modulation output pin and 0.4 V minimum voltage onpin BIASn Retiming function via external clock with disable optionn Pulse width adjustment function with disable optionn Positive Emitter Coupled Logic (PECL), Low Voltage Positive Emitter Coupled Logic(LVPECL) and Current-Mode Logic (CML) compatible data and clock inputsn Internal common mode voltage available for AC-coupled data and clock inputs and forsingle-ended applicationsn 3.3 V supply voltagen TZA3011A: AC-coupled laser for 3.3 V laser supplyn TZA3011B: DC-coupled laser for 3.3 V and 5 V laser supply

TZA3011BVH/C2,557 1. General description

The TZA3011 is a fully integrated laser driver for optical transmission systems with datarates up to 3.2 Gbit/s. The TZA3011 incorporates all the necessary control and protectionfunctions for a laser driver application with very few external components required and lowpower dissipation. The dual-loop controls the average monitor current in a programmablerange from 150 m A to 1300 m A and the extinction ratio in a programmable range from5 to 15 (linear scale).The design is made in the Philips BiCMOS RF process and is available in a HBCC32package or as bare die. The TZA3011A is intended for use in an application with anAC-coupled laser diode with a 3.3 V laser supply voltage. The TZA3011B is intended foruse in an application with a DC-coupled laser diode for both 3.3 V and 5 V laser supplyvoltages.

TZA3011BVH/C2,557 2.2 Control features

n Dual-loop control for constant and accurate optical average power level and extinctionratio (up to 2.7 Gbit/s)n Optional average power loop control (up to 3.2 Gbit/s)n Optional direct setting of modulation and bias currents

TZA3011BVH/C2,557 3. Applications

n SDH/SONET optical transmission systemsn High current drivers for convertersn High current drivers for high frequencies