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CXB1549 - Laser Diode Driver

Description

The CXB1549Q is a high-speed monolithic Laser Diode Driver/Current Switch with ECL/PECL input level.

Open collector outputs are provided at the output pins (Q, QBX) and have the capacity of driving modulation current of 50mAp-p at a max.

data rate of 1.25Gbps (Min.).

Features

  • Maximum data rate (NRZ): 1.25Gbps.
  • Power on Reset function.
  • Alarm and Shutdown function.
  • Signal Duty cycle correction.
  • Automatic Power Control (APC) for bias current.
  • Activity detector function for laser safety.
  • Power indicate function.
  • Differential PECL inputs or AC coupled inputs 40 pin QFP (Plastic).

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Full PDF Text Transcription

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CXB1549Q Laser Diode Driver Description The CXB1549Q is a high-speed monolithic Laser Diode Driver/Current Switch with ECL/PECL input level. Open collector outputs are provided at the output pins (Q, QBX) and have the capacity of driving modulation current of 50mAp-p at a max. data rate of 1.25Gbps (Min.). Along with the modulation current generator there is the laser diode bias generator which has capacity of sourcing up to 60mA (Bias). The laser diode current can be controlled by either a voltage or current into the bias adjust pin (BiasAdj) and the bias set pin (SBias), depending on how these pins are configured. Control of the diode bias current is achieved through the APC (Automatic Power Control) circuitry.
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