Le87557 Single Channel Differential Amplifier

Microsemi / Microchip Le87557 Single Channel Differential Amplifier is designed to drive full rate VDSL2, ADSL2+, and PLC high-power signals. The Le87557 device contains a pair of wide-band amplifiers designed with Microsemi’s HV15 bipolar SOI process for high-power output with low power consumption. Line driver gain is set externally to the device, and it can be powered from a single high-voltage supply or from dual supplies. The device can be programmed to one of three preset bias levels to optimize power and performance. Also, the line driver features a power-down state, which forces low-power and high-impedance modes for receive transmissions or for idle operations. The control pins respond to input levels that can be generated with a standard GPIO but are tolerant of higher voltage logic levels.