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ISL1557A Datasheet

12V xDSL Differential Line Driver

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DATASHEET
ISL1557A
12V xDSL Differential Line Driver with Enhanced Output Protection
FN6568
Rev 3.00
Mar 2, 2018
The ISL1557A 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
ISL1557A is designed with stronger output clamps to enhance
protection against lightning transients.
The ISL1557A 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
ISL1557A has two 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.
The ISL1557A is ideal for ADSL2+, SDSL, HDSL2, and VDSL
line driving applications, including both 14.5dBm and 21dBm
applications.
Related Literature
For a full list of related documents, visit our website
ISL1557A product page
Features
• 21dBm output power capability
• Drives up to 750mA from a +12V supply
• 20VP-P differential output drive into 21Ω
• -80dBc typical driver output distortion at full output at
150kHz
• -75dBc typical driver output distortion at 4MHz
• -82dBc typical driver output distortion at 10MHz
• -79dBc typical driver output distortion at 17MHz
• Low quiescent current of 6mA per amplifier
• Supply range
- ISL1557AIUEZ . . . . . . . . . . . . . . . . . . . . . . . . . . 4.5V to 12V
- ISL1557AIRZ . . . . . . . . . . . . . . ±2.25V to ±6V, 4.5V to 12V
• 300MHz bandwidth
• Thermal shutdown
• Pb-free (RoHS compliant)
Applications
• VDSL2 line drivers
• ADSL2+ CPE line driving
• G.SHDSL and HDSL2 line drivers
FN6568 Rev 3.00
Mar 2, 2018
Page 1 of 12


Renesas Electronics Components Datasheet

ISL1557A Datasheet

12V xDSL Differential Line Driver

No Preview Available !

ISL1557A
Ordering Information
PART NUMBER
(Notes 2, 3)
PART
MARKING
TEMP. RANGE TAPE AND REEL
(°C) (UNITS)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL1557AIRZ
155 7AIRZ
-40 to +85
- 16 Ld 4x4 QFN
L16.4x4H
ISL1557AIRZ-T7 (Note 1)
155 7AIRZ
-40 to +85
1k 16 Ld 4x4 QFN (Tape and Reel) L16.4x4H
ISL1557AIUEZ (No longer available or
supported)
BBBGA
-40 to +85
- 10 Ld HMSOP
MDP0050
NOTES:
1. Refer to TB347 for details about reel specifications.
2. These 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. 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
3. For Moisture Sensitivity Level (MSL), refer to the ISL1557A product information page. For more information about MSL, refer to TB363.
Pin Configurations
ISL1557A
(16 LD QFN)
TOP VIEW
16 15 14 13
NC 1
12 NC
INA- 2
INA+ 3
VS-*
11 INB-
10 INB+
GND 4
9 C1
5678
ISL1557A
(10 LD HMSOP)
TOP VIEW
VS+ 1
NOOLIINOUNNNATAGAC+-ER2345AVAILABVLSE-O* R
SUPP19O0ROITNEUBDT-B
8 INB+
7 C1
6 C0
*THERMAL PAD MUST BE CONNECTED TO NEGATIVE SUPPLY: VS-. QFN
PACKAGE CAN BE USED IN SINGLE AND DUAL SUPPLY APPLICATIONS.
*THERMAL PAD MUST BE CONNECTED TO NEGATIVE SUPPLY: VS-.
HMSOP PACKAGE CAN BE USED IN SINGLE SUPPLY APPLICATIONS
ONLY.
Pin Descriptions
16 LD QFN
1, 5, 6, 12, 15
2
3
4
7
8
9
10
11
13
14
16
10 LD HMSOP
2
4
5
Thermal Pad
Thermal Pad
6
7
8
9
10
1
3
PIN NAME
NC
INA-
INA+
GND
VS-
C0 (Note 4)
C1 (Note 4)
INB+
INB-
OUTB
VS+
OUTA
FUNCTION
No connect
Inverting input of Amplifier A
Non-inverting input of Amplifier A
Ground connect
Negative supply
Current control bias pin
Current control bias pin
Non-inverting input of Amplifier B
Inverting input of Amplifier B
Output of Amplifier B
Positive supply
Output of Amplifier A
FN6568 Rev 3.00
Mar 2, 2018
Page 2 of 12


Part Number ISL1557A
Description 12V xDSL Differential Line Driver
Maker Renesas
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