PHY1078-01

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125Mbps to 2.5Gbps FTTx Burst-Mode Laser Driver/Postamplifier

Programmable GEPON Transceiver

Data Sheet (Rev. 1) Product Selection Table
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Overview

  • Burst-Mode Common Anode Laser Driver with Up to 80mA Modulation and 90mA Bias Current
  • 7ns Output Switching in Burst Mode
  • Power-Saving Mode with Zero Bias and Modulation Current Between Bursts
  • Closed or Open-Loop Bias Mode with Temperature Lookup Table
  • Temperature-Compensated Modulation Current
  • Limiting Amplifier with Programmable Lowpass Filter and Output Swing
  • Device Settings Stored in External 2k EEPROM

The PHY1078-01 is a combined burst-mode laser driver and limiting amplifier for use within fiber optic modules for FTTx applications. Used with the PHY1095 or PHY1097 transimpedance amplifiers and a low cost serial EEPROM, the device forms a complete PON diplexer silicon solution. The transmit block includes a high-frequency modulator and a bias current generator. The bias current can be controlled either by a fast-settling APC loop or in open-loop mode, which uses a temperature lookup table.

The receiver includes a limiting amplifier with programmable bandwidth. A signal-detect/loss-of-signal function is implemented using the input signal modulation amplitude with user-selectable threshold and hysteresis.

Operating with a 3.3V supply and rated from -40°C to +95°C ambient operating temperature range, the PHY1078-01 is housed in a 32-pin, 5mm x 5mm, RoHS-compliant, TQFN package.

Applications

  • GEPON
PHY1078-01
125Mbps to 2.5Gbps FTTx Burst-Mode Laser Driver/Postamplifier
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Documentation

Data Sheet 1

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