intersil ISL1557 DATA SHEET

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ISL1557

Data Sheet September 28, 2006

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 25Ω load.

The ISL1557 is available in the thermally-enhanced 16 Ld QFN package and is specified for operation over the full -40°C to +85°C temperature range. The ISL1557 has control pins C enable/disable of the outputs. These controls allow for lowering the power to fit the performance/power ratio for the application.

The ISL1557 is ideal for ADSL2+, SDSL, HDSL2 and VDSL line driving applications, including both 14.5dBm and 21dBm applications.

and C1 for controlling the bias and

FN7522.0

Features

• 21dBm output power capability

• Drives up to 750mA from a +12V supply

•20V

• -80dBc typical driver output distortion at full output at

• -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

• Supply range

• 300MHz bandwidth

• Thermal shutdown

• Pb-free plus anneal available (RoHS compliant)

differential output drive into 21Ω

P-P

150kHz

- For ISL1557IUE 4.5V to 12V

- For ISL1557IR ±2.25V to ±6V, 4.5V to 12V

Applications

• VDSL2 line drivers

• Power line communications line drivers

• ADSL2+ CPE line driving

• G.SHDSL, HDSL2 line drivers

Ordering Information

PART NUMBER (Note) PART MARKING TAPE AND REEL TEMP. RANGE (°C) PACKAGE (Pb-Free) PKG. DWG. #

ISL1557IRZ 7IRZ - -40 to +85 16 Ld QFN (Pb-free) MDP0046 ISL1557IRZ-T7 7IRZ 7” -40 to +85 16 Ld QFN (Pb-free) MDP0046 ISL1557IRZ-T13 7IRZ 13” -40 to +85 16 Ld QFN (Pb-free) MDP0046 ISL1557IUEZ BBVAA - -40 to +85 10 Ld HMSOP (Pb-free) MDP0050 ISL1557IUEZ-T7 BBVAA 7” -40 to +85 10 Ld HMSOP (Pb-free) MDP0050 ISL1557IUEZ-T13 BBVAA 13” -40 to +85 10 Ld HMSOP (Pb-free) MDP0050

NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.

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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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ISL1557

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FN7522.0