LT6300
500mA, 200MHz xDSL
Line Driver in 16-Lead SSOP Package
FEATURES
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DESCRIPTIO
Exceeds All Requirements For Full Rate,
Downstream ADSL Line Drivers
Power Enhanced 16-Lead SSOP Package
Power Saving Adjustable Supply Current
±500mA
Minimum I
OUT
±10.9V
Output Swing, V
S
=
±12V,
R
L
= 100Ω
±10.7V
Output Swing, V
S
=
±12V,
I
L
= 250mA
Low Distortion: – 82dBc at 1MHz, 2V
P-P
Into 50Ω
200MHz Gain Bandwidth
600V/µs Slew Rate
Specified at
±12V
and
±5V
The LT
®
6300 is a 500mA minimum output current, dual op
amp with outstanding distortion performance. The ampli-
fiers are gain-of-ten stable, but can be easily compensated
for lower gains. The extended output swing allows for
lower supply rails to reduce system power. Supply current
is set with an external resistor to optimize power dissipa-
tion. The LT6300 features balanced, high impedance in-
puts with low input bias current and input offset voltage.
Active termination is easily implemented for further sys-
tem power reduction. Short-circuit protection and thermal
shutdown insure the device’s ruggedness.
The outputs drive a 100Ω load to
±10.9V
with
±12V
supplies, and
±10.7V
with a 250mA load. The LT6300 is a
functional replacement for the LT1739 and LT1794 in
xDSL line driver applications and requires no circuit
changes.
The LT6300 is available in the very small, thermally
enhanced, 16-lead SSOP package (same PCB area as the
SO-8 package) for maximum port density in line driver
applications.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
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High Efficiency ADSL, HDSL2, SHDSL Line Drivers
Buffers
Test Equipment Amplifiers
Cable Drivers
TYPICAL APPLICATIO
High Efficiency
±12V
Supply ADSL Line Driver
12V
24.9k
+IN
+
1/2
LT6300
SHDN
12.7Ω
–
1k
110Ω
1000pF
1:2*
•
•
110Ω
1k
*COILCRAFT X8390-A OR EQUIVALENT
I
SUPPLY
= 10mA PER AMPLIFIER
WITH R
SHDN
= 24.9k
6300 TA01
–
1/2
LT6300
–IN
12.7Ω
SHDNREF
+
–12V
U
100Ω
U
U
1
LINER [ LINEAR TECHNOLOGY ]
