LT6556IUF#TRPBF

Analog Switches - Special Purpose Overview

The LT6556IUF#TRPBF is a high-speed triple 2:1 video multiplexer with a fixed gain of 1, housed in a 24-lead QFN package. It features a 750MHz small-signal bandwidth and a 450MHz large-signal bandwidth at 2VP-P. The device operates on dual supplies from ±2.25V to ±6V or a single supply from 4.5V to 12V. Each amplifier draws 9.5mA at ±5V, with disabled current below 330µA. Key performance metrics include 72dB channel separation at 10MHz, 2100V/µs slew rate, and –84dBc second harmonic distortion.

Analog Switches - Special Purpose Feature Summary

• Triple 2:1 video multiplexer architecture with individually buffered channels
• High-speed signal processing with wide bandwidth for high-resolution video
• Independent power supply pins per amplifier to maximize channel isolation
• Integrated input clamping circuitry referenced to VREF pin

Analog Switches - Special Purpose Applications

• RGB video multiplexing
• UXGA video signal routing
• LCD projector systems

Analog Switches - Special Purpose Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing this component. Confirm that the 'I' grade designation corresponds to the industrial temperature range requirements of your design. Ensure the ordering information matches the exact manufacturer part number to avoid discrepancies in package type or electrical specifications.

Analog Switches - Special Purpose Selection Notes

Select the LT6556IUF#TRPBF for applications requiring a fixed unity gain buffer. If a gain of 2 is required instead, consider the LT6555 variant. This component is suitable for designs needing high channel separation and fast settling times. Verify that the PCB layout supports the necessary bypassing and grounding strategies to maintain the specified performance characteristics.

Analog Switches - Special Purpose Part Context

This component belongs to the LT6556 family of video switch ICs manufactured by Analog Devices Inc. It is designed specifically for high-speed video applications where signal integrity and low crosstalk are critical. The IUF suffix denotes the industrial temperature range and the 24-lead QFN package format.

Analog Switches - Special Purpose Replacement Considerations

LT6555IUF#TRPBF (Gain of 2)

Analog Switches - Special Purpose FAQ

How does the LT6556 handle input signals that exceed the output swing limits?

The device utilizes internal input clamps referenced to the VREF pin to limit the input voltage. These clamps prevent damage to the input stage, provided the input current remains below ±10mA.

What is the function of the AGND pins on the LT6556?

The AGND pins provide analog ground isolation between adjacent input channels. Connecting them to a quiet ground node significantly increases channel separation and reduces crosstalk.

Can the LT6556 operate with a single supply voltage?

Yes, while optimized for dual supplies, it can operate with a single supply ranging from 4.5V to 12V. In single-supply configurations, the VREF pin should be biased appropriately to center the common-mode voltage.