EL1508_07 Datasheet, PDF (1/18 Pages) Intersil Corporation – Differential DSL Line Driver

®
Data Sheet
March 26, 2007
EL1508
FN7014.5
Differential DSL Line Driver
Features
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 (C₀ and C₁) 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.
• 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
EL1508
[16 LD SOIC (0.150”)]
TOP VIEW
EL1508
(24 LD QFN)
TOP VIEW
VIN-A 1
20 VIN-B
VOUTA 2
19 VOUTB
VS- 3
A
GND* 4
18 VS+
B
17 GND*
GND* 5
16 GND*
GND* 6
15 GND*
GND* 7
14 GND*
VIN+A 8
13 VIN+B
C1 9
C0 10
POWER
CONTROL
LOGIC
12 IADJ
11 NC
VIN-A 1
16 VIN-B
VOUTA 2
15 VOUTB
VS- 3
14 VS+
GND* 4
13 GND*
GND* 5
12 GND*
VIN+A 6
11 VIN+B
C1 7
C0 8
POWER
CONTROL
LOGIC
10 IADJ
9 NC
*GND PINS ARE HEAT SPREADERS
NC 1
NC 2
VS- 3
NC 4
NC 5
NC 6
GND 7
THERMAL
PAD
19 NC
18 NC
17 VS+
16 NC
15 NC
14 NC
13 GND
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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