
Linear Technology
DESCRIPTION
The LT®1794 is a 500mA minimum output current, dual op amp with outstanding distortion performance. The amplifiers 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 dissipation. The LT1794 features balanced, high impedance inputs with low input bias current and input offset voltage. Active termination is easily implemented for further system power reduction. Short-circuit protection and thermal shutdown insure the device’s ruggedness.
FEATURES
■ Exceeds All Requirements For Full Rate, Downstream ADSL Line Drivers
■ ±500mA Minimum IOUT
■ ±11.1V Output Swing, VS = ±12V, RL = 100Ω
■ ±10.9V Output Swing, VS = ±12V, IL = 250mA
■ Low Distortion: – 82dBc at 1MHz, 2VP-P Into 50Ω
■ Power Saving Adjustable Supply Current
■ Power Enhanced Small Footprint Packages: 20-Lead TSSOP and 20-Lead SW
■ 200MHz Gain Bandwidth
■ 500V/µs Slew Rate
■ Specified at ±15V, ±12V and ±5V
APPLICATIONS
■ High Density ADSL Central Office Line Drivers
■ High Efficiency ADSL, HDSL2, G.lite, SHDSL Line Drivers
■ Buffers
■ Test Equipment Amplifiers
■ Cable Drivers