1
®
FN7002.1
EL1528
Dual Channel Differential DSL Line Driver
The EL1528 is a dual channel differential amplifier designed
for driving full rate ADSL signals at very low power
dissipation. The high drive capability of 450mA makes this
driver ideal for both CAP and DMT designs. It contains two
pairs of wideband, high-voltage, current mode feedback
amplifiers optimized for low power consumption in DSL
systems.
These drivers achieve an MTPR distortion measurement of
better than 70dB, while consuming typically 5mA per DSL
channel of total supply current. This supply current can be
set using a resistor on the IADJ pin. T wo other pins (C0 & C1)
can also be used to adjust supply current to one of four pre-
set modes (full-IS, 3/4-IS, 1/ 2-IS, and full power-down). The
EL1528 operates on ±5V to ±12V supplies and retains its
bandwidth and linearity over the complete supply range.
The device is supplied in a thermally-en hanced 20-pin
HTSSOP and the small footprint (4x5mm) 24-pin QFN
packages. The EL1528 is specified for operation over the full
-40°C to +85°C temperature range.
Features
• Pb-free available
• 450mA output drive capability
•44.4V
P-P differential output drive into 100Ω
• -75dBc THD @ 500kHz 16VP-P
• MTPR of -70dB
• Operates down to 2mA per amplifier supply current
• Current control pins
• Channel separation
- 80dB @ 500kHz
-75dB @ 1MHz
• Pb-free available (RoHS co mpliant)
Applications
• Dual port ADSL line drivers
• HDSL line drivers
• VDSL line drivers
Pinouts
EL1528
(24-PIN QFN)
TOP VIEW
19
18
17
16
15
14
13
24
23
22
21
20
8
9
10
11
12
1
2
3
4
5
6
7
VINA+
VINB+
GND
IADJ
NC
VINC+
VIND+
VINA-
VINB-
VOUTB
VOUTC
VINC-
VIND-
VOUTD
C1AB
C0AB
VS-
NC
VOUTA
C1CD
C0CD
VS+
NC
NC
THERMAL
PAD
EL1528
(20-PIN HTSSOP)
TOP VIEW
C0AB
C1AB
VINA+
VINB+
GND
IADJ
VINC+
VIND+
C1CD
C0CD
VS-
VINA-
VOUTB
VINC-
VOUTD
VOUTA
VINB-
VOUTC
VIND-
VS+
1
2
3
4
16
15
14
13
5
6
7
12
11
9
8
10
20
19
18
17
THERMAL
PAD
Data Sheet
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002-2004. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
September 21, 2004
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2
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 lice nse is gran t ed by i mpli catio n or other wise u nder an y p a tent or patent right s of Int er sil or it s sub sidi aries.
For information regarding Intersil Corporation and its products, see www.intersil.com
FN7002.1
EL1528
