Evaluation Board For XDSL Differential Line Driver

The ISL1557 is a dual operational amplifier designed for VDSL2 and ADSL line driving in DMT based solutions. This device features a high drive capability of 750mA while consuming only 6mA of supply current per amplifier and operating from a single 4.5V to 12V supply. The driver achieves a typical distortion of -80dBc, at 150kHz into a 25O load. The ISL1557 is available in the thermally-enhanced 16 Ld QFN and 10 Ld HMSOP package and is specified for operation over the full -40°C to +85°C temperature range. The ISL1557 has control pins C0 and C1 for controlling the bias and enable/disable of the outputs. These controls allow for lowering the power to fit the performance/power ratio for the application.

• 21dBm output power capability
• Drives up to 750mA from a +12V supply
• 20VP-P differential output drive into 21O
• -80dBc typical driver output distortion at full output at 150kHz
• -75dBc typical driver output distortion at 4MHz
• -71dBc typical driver output distortion at 10MHz
• -75dBc typical driver output distortion at 17MHz
• Low quiescent current of 6mA per amplifier
• 300MHz bandwidth
• Thermal shutdown
• Pb-free (RoHS compliant)