®
ISL1557
Data Sheet
February 26, 2008
FN7522.2
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 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 C
0
and C
1
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.
The ISL1557 is ideal for ADSL2+, SDSL, HDSL2 and VDSL
line driving applications, including both 14.5dBm and 21dBm
applications.
Features
• 21dBm output power capability
• Drives up to 750mA from a +12V supply
• 20V
P-P
differential output drive into 21Ω
• -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
• Supply range
- For ISL1557IUEZ 4.5V to 12V
- For ISL1557IRZ ±2.25V to ±6V, 4.5V to 12V
• 300MHz bandwidth
• Thermal shutdown
• Pb-free (RoHS compliant)
Get Full Datasheet
Ordering Information
PART NUMBER
(Note)
ISL1557IRZ
ISL1557IRZ-T7*
ISL1557IUEZ
ISL1557IUEZ-T7*
PART
MARKING
155 7IRZ
155 7IRZ
BBVAA
BBVAA
Applications
• VDSL2 line drivers
• Power line communications line drivers
• ADSL2+ CPE line driving
• G.SHDSL, HDSL2 line drivers
TEMP.
RANGE (°C)
-40 to +85
-40 to +85
-40 to +85
-40 to +85
PACKAGE
(Pb-Free)
16 Ld 4x4 QFN
PKG.
DWG. #
MDP0046
16 Ld 4x4 QFN (Tape and Reel) MDP0046
10 Ld HMSOP
MDP0050
10 Ld HMSOP (Tape and Reel) MDP0050
*Please refer to TB347 for details on reel specifications
NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and 100%
matte tin plate PLUS ANNEAL - e3 termination finish, which is 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.
1-888-INTERSIL or 1-888-468-3774
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All other trademarks mentioned are the property of their respective owners.
ISL1557
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
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FN7522.2
February 26, 2008
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