Low Cost Dual and Triple 130MHz Current Feedback Amplifiers with Shutdown

The LT1259 contains two independent 130MHz current feedback amplifiers, each with a shutdown pin. These amplifiers are designed for excellent linearity while driving cables and other low impedance loads. The LT1260 is a triple version especially suited to RGB video applications. These amplifiers operate on all supplies from single 5V to ±15V and draw only 5mA per amplifier when active.

When shut down, the LT1259/LT1260 amplifiers draw zero supply current and their outputs become high impedance. Only two LT1260s are required to make a complete 2-input RGB MUX and cable driver. These amplifiers turn on in only 100ns and turn off in 40ns, making them ideal in spread spectrum and portable equipment applications.

The LT1259/LT1260 amplifiers are manufactured on our proprietary complementary bipolar process.

Applications

* RGB Cable Drivers

* Spread Spectrum Amplifiers

* MUX Amplifiers

* Composite Video Cable Drivers

* Portable Equipment

* 90MHz Bandwidth on ±5V

* 0.1dB Gain Flatness > 30MHz

* Completely Off in Shutdown, 0µA Supply Current

* High Slew Rate: 1600V/µs

* Wide Supply Range: ±2V(4V) to ±15V(30V)

* 60mA Output Current

* Low Supply Current: 5mA/Amplifier

* Differential Gain: 0.016%

* Differential Phase: 0.075°

* Fast Turn-On Time: 100ns

* Fast Turn-Off Time: 40ns

* 14-Pin and 16-Pin Narrow SO Packages