PHY2078QT-RR

PHY2078 is a FTTx burst mode laser driver/post amplifier. It is a combined burst mode laser driver and limiting amplifier for use within fibre optic modules for FTTx applications. Used with the PHY1095 or PHY1097 transimpedance amplifiers and a low-cost serial EEPROM it 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. Application includes GPON, GEPON, BPON.

• 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 low pass filter and output swing
• Device settings stored in external 2k EEPROM
• Operating supply voltage range from 2.97 to 3.63V (continuous operation)
• Input low frequency cut-off is 15KHz (typ, high pass 3dB point for RX system)
• TQFN32 package, operating temperature range from -40 to +95°C (ambient still air)

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Note

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party