Datasheet LT1795 (Analog Devices)

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