LTC6404HUD-4#TRPBF

Overview

The LTC6404HUD-4#TRPBF 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 from 2.7V to 5.25V with a typical supply current of 30.2mA. It provides an input-referred voltage noise density of 1.5nV/√Hz and includes a built-in 88.5MHz differential lowpass filter. The component is housed in a compact 3mm × 3mm 16-pin QFN package.

Feature Summary

• Fully differential architecture with adjustable output common mode voltage
• Integrated 88.5MHz differential single-pole lowpass filter
• Hardware shutdown capability for reduced power consumption
• Rail-to-rail output swing with input range extending to ground

Applications

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

Procurement Notes

Verify the specific suffix 'HUD' indicates the extended temperature grade (-40°C to 125°C) and '-4' denotes the gain configuration (≥4V/V). Confirm the '#TRPBF' suffix corresponds to tape and reel packaging and lead-free finish. Cross-reference the manufacturer's official ordering information to ensure compatibility with system thermal and environmental requirements before procurement.

Selection Notes

Select this variant when a closed-loop gain of four or greater is required alongside high-speed performance. The -4 designation ensures stability for gains ≥4V/V, distinguishing it from unity-gain or lower-gain variants. Ensure the application benefits from the integrated filtering and fully differential topology to maximize dynamic range and minimize even-order harmonics in ADC driving scenarios.

Part Context

This component belongs to the LTC6404 family of AC precision amplifiers designed for 3V single-supply systems. The family includes variants optimized for different closed-loop gains: unity-gain stable, gains ≥2V/V, and gains ≥4V/V. All variants share the same low-noise, high-bandwidth characteristics and are available in industrial and extended temperature grades within the same compact QFN footprint.

Replacement Considerations

Direct substitutes include other LTC6404 family members such as LTC6404IUD-4#TRPBF for industrial temperature ranges, or LTC6404CUD-4#TRPBF for commercial ranges. For different gain configurations, consider LTC6404IUD-1#TRPBF or LTC6404IUD-2#TRPBF if the circuit allows for gain adjustment.