The ISL1533 is a dual channel differential amplifier designed

for driving full rate ADSL2+ signals at very low power

dissipation. The high drive capability of 450mA makes this

driver ideal for DMT designs. It contains two pairs of

wideband, high-voltage, current mode feedback amplifiers

designed on Intersil’s HS30 Bipolar SOI process for low

power consumption in DSL systems. This process also

provides for very rugged protection against lightning induced

surges on the line.

These drivers achieve an MTPR distortion measurement of

better than 70dB, while consuming typically 5mA per DSL

channel of total supply current in 1/2 IS mode. This supply

current can be set using a resistor on the IADJ pin. Two other

pins (C0 and C1) can also be used to adjust supply current to

one of four preset modes (full-IS, 3/4-IS, 1/2-IS, and full

power-down). The ISL1533 integrates 50k pull-up resistors

on C0 and C1 pins to initially disable the device.

The ISL1533 operates on ±5V to ±15V supplies and retains

its bandwidth and linearity over the complete supply range.

The device is supplied in a thermally-enhanced

20 Ld HTSSOP and the small footprint (4mmx5mm)

24 Ld QFN packages. The ISL1533 is specified for operation

over the full -40°C to +85°C temperature range.

Features

• 450mA output drive capability

• 44.4VP-P differential output drive into 100

• ±5V to ±15V supply operation

• MTPR of -70dB

• Operates down to supply current of 4mA per port

• Current control pins

• Channel separation

- 80dB @ 500kHz

• High ESD protection from lightning induced transients

• Pb-free (RoHS compliant)

• Surpasses GR1089, ANSI, and ETSI requirements

Applications

• Dual port ADSL2+ line drivers

• HDSL line drivers