ISL1539
®
Data Sheet
February 12, 2007
FN7516.2
Dual Channel Differential VDSL2 Line
Driver
Features
• 450mA output drive capability
• 44.1V differential output drive into 100Ω
The ISL1539 is to be used for high performance long reach
and high speed applications, including ADSL2, ADSL2+, and
VDSL2 20dBm.
P-P
• -85dBc THD @ 1MHz 2V
P-P
• High slew rate of 1200V/µs differential
The ISL1539 is an integral part of the signal chain. The
driver has been optimized for flat gain response and reduced
harmonic distortion and noise in the bands of interest to
improve the overall signal to noise in the system.
• Bandwidth - 80MHz @ A = 10
V
• Current control pins
• Channel separation
- 80dB @ 500kHz
- 75dB @ 1MHz
- 60dB @ 4MHz
These drivers achieve a total harmonic distortion (THD)
measurement of typically -60dB MTPR @ 1.1MHz, while
consuming typically 10mA per DSL channel of total supply
current. This supply current can be set using a resistor on
the I
pin. Two other pins (C and C ) can also be used to
• Pb-free plus anneal available (RoHS compliant)
ADJ
0 1
adjust supply current to one of four pre-set modes (full-I ,
S
3/4-I , 1/2-I , and full power-down). The ISL1539 operates
on ±5V to ±15V supplies and retains its bandwidth and
linearity over the complete supply range.
Applications
• VDSL2 20dBm
• ADSL2++
S
S
The device is supplied in the small footprint (4mmx5mm)
24 Ld QFN package and is specified for operation over the full
-40°C to +85°C temperature range.
Get Full Datasheet
Pinouts
ISL1539
(24 LD HTSSOP)
TOP VIEW
ISL1539
(24 LD QFN)
TOP VIEW
VS-
C0AB
C1AB
VINA+
VINB+
GND
1
2
3
4
5
6
7
8
9
24 VS+
23 VOUTA
22 VINA-
21 VINB-
20 VOUTB
19 NC
VINA+
VINB+
GND
1
2
3
4
5
6
7
19 VINA-
18 VINB-
17 VOUTB
16 NC/SHIELD
15 VOUTC
14 VINC-
THERMAL
PAD
IADJ
THERMAL
PAD
IADJ
18 NC
NC
VINC+
VIND+
17 VOUTC
16 VINC-
15 VIND-
14 VOUTD
13 VS+
VINC+
VIND+
13 VIND-
C1CD 10
C0CD 11
VS- 12
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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1
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