LT1260| Datasheet

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LT1259/LT1260 Low Cost Dual and Triple 130MHz Current Feedback Amplifiers with Shutdown

FEATURES
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DESCRIPTIO

90MHz Bandwidth on 5V 0.1dB Gain Flatness > 30MHz Completely Off in Shutdown, 0uA Supply Current High Slew Rate: 1600V/us 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

The LT 1259 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 Linear Technology's proprietary complementary bipolar process.
, LTC and LT are registered trademarks of Linear Technology Corporation.

APPLICATIO S
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RGB Cable Drivers Spread Spectrum Amplifiers MUX Amplifiers Composite Video Cable Drivers Portable Equipment

TYPICAL APPLICATIO

2-Input Video MUX Cable Driver
A VIN A RG 1.6k CHANNEL SELECT EN A 75 B

Square Wave Response

+

1/2 LT1259 RF 1.6k 75 CABLE VOUT

VIN B RG 1.6k

+

EN B 75
LT1259/60 TA01

75

1/2 LT1259 RF 1.6k

CABLE OUTPUT

RL = 150 f = 30MHz

U
LT1259/50 TA02

U

U

1

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LT1260 DATASHEET