LT1259CS#PBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT1259CS#PBF is a dual high-speed current feedback amplifier manufactured by Analog Devices Inc. in a 14-lead narrow SOIC package. It integrates two independent amplifiers, each equipped with a dedicated shutdown pin for power management. The device operates on supply voltages ranging from ±2V to ±15V and draws 5mA per amplifier when active. Key electrical specifications include a 130MHz bandwidth at a gain of 2, a typical slew rate of 1600V/ms, and an output current capability of 60mA. In the disabled state, the amplifiers draw zero supply current and present a high-impedance output.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Dual independent current feedback amplifiers with individual shutdown control
• High linearity optimized for driving low impedance loads such as cables
• Fast switching times enabling rapid turn-on and turn-off operations
• Zero supply current consumption in the disabled mode

Instrumentation, Op Amps, Buffer Amps Applications

• RGB video multiplexers and cable drivers
• Spread spectrum equipment amplifiers
• Composite video cable drivers
• Portable equipment requiring low power consumption

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify that the component matches the specific 14-lead narrow SOIC package configuration required for the design. Confirm that the operating temperature range meets the application requirements, noting that commercial grade parts are specified over 0°C to 70°C while industrial grades are available upon request. Ensure the datasheet version aligns with the manufacturing lot to guarantee parameter consistency.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring high-speed signal processing with precise channel switching capabilities. The current feedback architecture provides consistent bandwidth regardless of gain settings within specified limits. Consider the external feedback resistor values carefully, as they influence both bandwidth and slew rate performance. The integrated shutdown feature makes it suitable for battery-powered systems where power conservation during idle states is critical.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the LT1259/LT1260 family of low-cost, high-speed current feedback amplifiers. While the LT1259 contains two amplifiers, the LT1260 offers a triple configuration specifically designed for RGB video applications. Both share identical electrical characteristics and packaging options, differing only in the number of integrated amplifier channels within the same proprietary complementary bipolar process technology.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

LT1259CN

Instrumentation, Op Amps, Buffer Amps FAQ

How does the shutdown function affect the amplifier output?

When disabled via the EN pin, the amplifier draws zero supply current and the output becomes high impedance, appearing as a 4.4pF capacitor in parallel with a 75k resistor.

What is the maximum differential input voltage allowed?

The differential input swing is limited to approximately -6V due to an internal ESD protection device connected between the input pins.