®
EL1508
Data Sheet
March 26, 2007
FN7014.5
Differential DSL Line Driver
The EL1508 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
and 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
EL1508 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 Ld SOIC
(0.300”), a thermally-enhanced 16 Ld SOIC (0.150”), and the
small footprint (4x5mm) 24 Ld QFN packages. The EL1508
is specified for operation over the full -40°C to +85°C
temperature range.
Features
• 450mA output drive capability
• 43.6V
P-P
differential output drive into 100Ω
• 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 EL1503
• Pb-free plus anneal available (RoHS compliant)
Applications
• ADSL line driver
• HDSL line driver
• Video distribution amplifier
• Video twisted-pair line driver
Pinouts
EL1508
[20 LD SOIC (0.300”)]
TOP VIEW
VIN-A 1
VOUTA 2
VS- 3
GND* 4
GND* 5
GND* 6
GND* 7
VIN+A 8
C1 9
C0 10
POWER
CONTROL
LOGIC
+ -
- +
A
B
20 VIN-B
19 VOUTB
18 VS+
17 GND*
16 GND*
15 GND*
14 GND*
13 VIN+B
12 IADJ
11 NC
EL1508
[16 LD SOIC (0.150”)]
TOP VIEW
24 VOUTA
VIN-A 1
VOUTA 2
VS- 3
GND* 4
GND* 5
VIN+A 6
C1 7
C0 8
POWER
CONTROL
LOGIC
+ -
- +
16 VIN-B
15 VOUTB
14 VS+
13 GND*
12 GND*
11 VIN+B
10 IADJ
NC 6
9 NC
GND 7
NC 1
NC 2
VS- 3
NC 4
NC 5
EL1508
(24 LD QFN)
TOP VIEW
20 VOUTB
19 NC
18 NC
17 VS+
THERMAL
PAD
16 NC
15 NC
14 NC
13 GND
C0 10
VIN+B 12
VIN+A 8
IADJ 11
C1 9
23 VIN-A
21 VIN-B
*GND PINS ARE HEAT SPREADERS
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright Intersil Americas Inc. 2001-2005, 2007. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
22 NC
INTERSIL [ INTERSIL CORPORATION ]
