NXP USA Inc. TZA3047BVH/C1,557

Description
The TZA3047 is a fully integrated laser driver for optical transmission systems with data rates up to 1.25 Gbits/s. It incorporates all the necessary control and protection functions for a laser driver application with very few external components required and low power dissipation. The dual-loop controls the average monitor current in a programmable range from 150 μA to 1300 μA and the extinction ratio in a programmable range from 5 to 15 (linear scale). The design is made in the Philips BICMOS RF process and is available in a HBCC32 package or as a bare die. The TZA3047A is intended for use in an application with an AC-coupled laser diode with a 3.3 V laser supply voltage. The TZA3047B is intended for use in an application with a DC-coupled laser diode for both 3.3 and 5 V laser supply voltages.

Features
30 Mbits/s to 1.25 Gbits/s
Bias current up to 100 mA
Modulation current up to 100 mA
Rise and fall times typical 120 ps
Jitter below 30 ps (peak-to-peak value)
Modulation output voltage up to 2 V dynamic range
1.2 V minimum voltage on the modulation output pin and 0.4 V minimum voltage on pin BIAS
Retiming function via external clock with disable option
Pulse width adjustment function with disable option
Positive Emitter Coupled Logic (PECL), Low Voltage Positive Emitter Coupled Logic (LVPECL) and Current-Mode Logic (CML) compatible data and clock inputs
Internal common mode voltage available for AC-coupled data and clock inputs and for single-ended applications
3.3 V supply voltage
TZA3047A: AC-coupled laser for 3.3 V laser supply
TZA3047B: DC-coupled laser for 3.3 V and 5 V laser supply

Applications
SDH/SONET optical transmission systems