ISL1561

DATASHEET ISL1561 Fixed Gain Dual Port Class-G Differential xDSL Line Driver FN7941 Rev 1.00 February 26, 2013 The ISL1561 is a fixed gain dual port class-G differential amplifier designed for driving full rate ADSL2+ and VDSL2 signals at very low power dissipation. The driver runs on a single +14V power supply and internally generates higher supply voltages when needed to enable power efficient operation for high peak-to-average ratio (PAR) ADSL2+ and VDSL2 signals. In ADSL2+ mode of operation with full 19.8dBm transmit signal power across 100 line load, each port consumes only 520mW of power, while with 19.5dBm VDSL2 8b profile a port consumes 610mW of power. In VDSL2 17a mode of operation with 14.5dBm transmit power, a port will consume 411mW of power. These typical power consumption figures account for receiver hybrid loading effects and transformer losses. The ISL1561 provides two ports of wideband, current feedback amplifiers optimized for low power consumption in xDSL syst...