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Description

The TZA3001AHL, TZA3001BHL and TZA3001U are fully integrated laser drivers for STM4/OC12 (622 Mbits/s) systems, incorporating the RF path between the data multiplexer and the laser diode.

Since the dual loop bias and modulation control circuits are integrated on the IC, the external component count is low. Only decoupling capacitors and adjustment resistors are required.

Features

1. 622 Mbits/s data input, both Current-Mode Logic (CML) and Positive Emitter Coupled Logic (PECL) compatible; maximum 800 mV (p-p)

2. Adaptive laser output control with dual loop, stabilizing optical ONE and ZERO levels

3. Optional external control of laser modulation and biasing currents (non-adaptive)

4. Automatic laser shutdown

5. Few external components required

6. Rise and fall times of 120 ps (typical value)