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)

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Notes

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