LT1795
Dual 500mA/50MHz
Current Feedback Line Driver
Amplifier
DESCRIPTIO
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FEATURES
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The LT®1795 is a dual current feedback amplifier with high
output current and excellent large signal characteristics.
The combination of high slew rate, 500mA output drive
and up to ±15V operation enables the device to deliver
significant power at frequencies in the 1MHz to 2MHz
range. Short-circuit protection and thermal shutdown
insure the device’s ruggedness. The LT1795 is stable with
large capacitive loads and can easily supply the large
currents required by the capacitive loading. A shutdown
feature switches the device into a high impedance, low
current mode, reducing power dissipation when the device is not in use. For lower bandwidth applications, the
supply current can be reduced with a single external
resistor.
500mA Output Drive Current
50MHz Bandwidth, AV = 2, RL = 25Ω
900V/µs Slew Rate, AV = 2, RL = 25Ω
Low Distortion: –75dBc at 1MHz
High Input Impedance, 10MΩ
Wide Supply Range, ±5V to ±15V
Full Rate, Downstream ADSL Supported
Low Power Shutdown Mode
Power Saving Adjustable Supply Current
Stable with CL = 10,000pF
Power Enhanced Small Footprint Packages
TSSOP-20, S0-20 Wide
Available in a 20-Lead TSSOP Package
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APPLICATIO S
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The LT1795 comes in the very small, thermally enhanced,
20-lead TSSOP package for maximum port density in line
driver applications.
ADSL HDSL2, G.lite Drivers
Buffers
Test Equipment Amplifiers
Video Amplifiers
Cable Drivers
, LTC and LT are registered trademarks of Linear Technology Corporation.
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TYPICAL APPLICATION
Low Loss, High Power Central Office ADSL Line Driver
V+
+IN
+
1/2
LT1795
12.5Ω
–
1k
1:2*
165Ω
100Ω
1k
–
1/2
LT1795
–IN
12.5Ω
+
V–
* MIDCOM 50215 OR EQUIVALENT
1795 TA01
1795fa
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