Note: All information contained in this data sheet has been carefully checked and is believed to be accurate as of the date of publication; however, this data sheet cannot be a "controlled document". Current revisions, if any, to these
specifications are maintained at the factory and are available upon your request. We recommend checking the revision level before finalization of your design documentation.
2001 Elantec Semiconductor, Inc.
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General Description
The EL1508C is designed for driving full rate ADSL signals in both
CO and CPE applications at very low power dissipation. The high
drive capability of 450mA makes this driver ideal for both CAP and
DMT designs. It contains two wideband, high-voltage, current mode
feedback amplifiers with a number of power dissipation reduction
features.
These drivers achieve an MTPR distortion measurement of better than
70dB, while consuming typically 6mA of total supply current. This
supply current can be set using a resistor on the I
ADJ
pin. Two other
pins (C
0
& C
1
) can also be used to adjust supply current to one of four
pre-set modes (full-I
S
, 2/3-I
S
, 1/3-I
S
, and full power-down). The
EL1508C operates on 5V to 12V supplies and retains its bandwidth
and linearity over the complete supply range.
The device is supplied in a thermally-enhanced 20-pin SO (0.300"), a
thermally-enhanced 16-pin SO (0.150"), and the small footprint
(4x5mm) 24-pin LPP packages. The EL1508C is specified for opera-
tion over the full -40C to +85C temperature range.
Pin Configurations
Pin Configurations continues on Page 3
19
18
17
16
15
14
13
2
4
2
3
2
2
2
1
2
0
8
9
1
0
1
1
1
2
1
2
3
4
5
6
7
Thermal Pad
NC
NC
VS-
NC
NC
NC
GND
NC
NC
VS+
NC
NC
NC
GND
V
O
U
T
A
V
I
N
-
A
N
C
V
I
N
-
B
V
O
U
T
B
V
I
N
+
A
C
1
C
0
I
A
D
J
V
I
N
+
B
24-Pin LPP Top View
Features
450mA output drive capability
43.6V
P-P
differential output drive
into 100
2
nd
/3
rd
harmonics of -85dBc/
-75dBc
MTPR of -70dB
Operates down to 3mA per
amplifier supply current
Power control features
Pin-compatible with EL1503C
Applications
ADSL line driver
HDSL line driver
Video distribution amplifier
Video twisted-pair line driver
Ordering Information
Part No
Package
Tape & Reel
Outline #
EL1508CS
16-Pin SO (0.150")
MDP0027
EL1508CM
20-Pin SO (0.300")
MDP0027
EL1508CL
24-Pin LPP
MDP0046
EL1508C - Product Brief
Differential DSL Line Driver
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EL1508C - Product Brief
Differential DSL Line Driver
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General Disclaimer
Specifications contained in this data sheet are in effect as of the publication date shown. Elantec, Inc. reserves the right to make changes in the cir-
cuitry or specifications contained herein at any time without notice. Elantec, Inc. assumes no responsibility for the use of any circuits described
herein and makes no representations that they are free from patent infringement.
WARNING - Life Support Policy
Elantec, Inc. products are not authorized for and should not be used
within Life Support Systems without the specific written consent of
Elantec, Inc. Life Support systems are equipment intended to sup-
port or sustain life and whose failure to perform when properly used
in accordance with instructions provided can be reasonably
expected to result in significant personal injury or death. Users con-
templating application of Elantec, Inc. Products in Life Support
Systems are requested to contact Elantec, Inc. factory headquarters
to establish suitable terms & conditions for these applications. Elan-
tec, Inc.'s warranty is limited to replacement of defective
components and does not cover injury to persons or property or
other consequential damages.
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Printed in U.S.A.
Elantec Semiconductor, Inc.
675 Trade Zone Blvd.
Milpitas, CA 95035
Telephone: (408) 945-1323
(888) ELANTEC
Fax:
(408) 945-9305
European Office: +44-118-977-6020
Japan Technical Center: +81-45-682-5820
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