Differential DSL Line Driver
General Description
• 450mA output drive capability
• 43.6VP-P differential output drive
into 100Ω
• 2nd/3rd harmonics of -85dBc/
• MTPR of -70dB
• Operates down to 3mA per
amplifier supply current
• Power control features
• Pin-compatible with EL1503C
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
ADSL line driver
HDSL line driver
Video distribution amplifier
Video twisted-pair line driver
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 operation over the full -40°C to +85°C temperature range.
20-Pin SO (0.300")
24-Pin LPP
Pin Configurations
Outline #
21 VIN-B
Tape & Reel
16-Pin SO (0.150”)
22 NC
23 VIN-A
Ordering Information
Part No
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 IADJ pin. Two other
pins (C0 & C1) can also be used to adjust supply current to one of four
pre-set modes (full-I S , 2/3-IS , 1/3-IS , and full power-down). The
EL1508C operates on ±5V to ±12V supplies and retains its bandwidth
and linearity over the complete supply range.
NC 1
19 NC
NC 2
18 NC
VS- 3
17 VS+
NC 4
Thermal Pad
16 NC
NC 5
15 NC
NC 6
14 NC
VIN+B 12
C0 10
C1 9
13 GND
24-Pin LPP Top View
Pin Configurations continues on Page 3
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.
November 29, 2001
© 2001 Elantec Semiconductor, Inc.
EL1508C - Product Brief
EL1508C - Product Brief
EL1508C - Product Brief
EL1508C - Product Brief
Differential DSL Line Driver
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 circuitry 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.
November 29, 2001
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 support 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 contemplating 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. Elantec, Inc.’s warranty is limited to replacement of defective
components and does not cover injury to persons or property or
other consequential damages.
Elantec Semiconductor, Inc.
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Milpitas, CA 95035
Telephone: (408) 945-1323
(408) 945-9305
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