LTC6404HUD-4#PBF

Overview

The LTC6404HUD-4#PBF is a high-speed, fully differential input/output amplifier optimized for single-supply operation. It features a closed-loop bandwidth of 600MHz and a slew rate of 1200V/μs. The device operates on supply voltages ranging from 2.7V to 5.25V with a typical supply current of 30mA. It includes an integrated 88.5MHz low-pass filter and supports hardware shutdown. The component is housed in a 16-pin QFN package and is characterized for industrial temperature ranges.

Feature Summary

• Fully differential architecture with rail-to-rail output swing
• Integrated 88.5MHz differential low-pass filter
• Hardware shutdown capability for power reduction
• Adjustable output common mode voltage

Applications

• Differential input A/D converter driver
• Single-ended to differential conversion and amplification
• Common mode level translation
• Low voltage signal processing

Procurement Notes

Verify the specific suffix 'HUD' indicates the extended temperature range variant (-40°C to 125°C) compared to standard commercial or industrial grades. Confirm the '-4' designation matches the required closed-loop gain stability (gain ≥ 4V/V). Ensure the lead-free finish '#PBF' aligns with assembly requirements. Cross-reference the manufacturer's discontinuation notices if applicable.

Selection Notes

Select this model when a closed-loop gain of four or greater is required for stable operation. It is suitable for applications demanding high linearity and low noise driving high-resolution ADCs. Consider the integrated filtering if external components are constrained. Verify that the supply voltage range accommodates the system's power rails and that the thermal performance meets the PCB layout capabilities.

Part Context

This component belongs to the LTC6404 family of AC precision amplifiers. The HUD suffix denotes the high-temperature grade variant, ensuring specified performance from -40°C to 125°C. It shares the same core topology as the CUD and IUD variants but offers broader environmental tolerance. The part is designed to drive state-of-the-art 16-bit and 18-bit ADCs directly.

Replacement Considerations

Publicly confirmed substitutes include other members of the LTC6404 family such as the LTC6404IUD-4#PBF or LTC6404CUD-4#PBF, provided the temperature range requirements are met. Direct pin-compatible alternatives within the same product line should be verified against specific gain and bandwidth needs.