LTC6404CUD-4#PBF

Overview

The LTC6404CUD-4#PBF is a low noise, high precision fully differential input/output amplifier optimized for single-supply operation. It features a closed-loop gain of 4V/V and a –3dB bandwidth of 600MHz. The device operates on supply voltages from 2.7V to 5.25V with a typical supply current of 30.2mA. Key electrical parameters include an input referred voltage noise density of 1.5nV/√Hz, a slew rate of 1200V/μs, and a maximum DC voltage offset of 2mV. It includes a hardware shutdown feature reducing current consumption to approximately 0.3mA.

Feature Summary

• Fully differential input and output architecture
• Integrated 88.5MHz differential single-pole lowpass filter
• Adjustable output common mode voltage control
• Hardware shutdown capability for power reduction

Applications

• Differential input 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 #PBF indicates lead-free finish and tube packaging. Confirm the C grade temperature range (0°C to 70°C) matches application requirements. Check for RoHS compliance documentation. Ensure the QFN package soldering process accounts for the exposed pad connection to V–.

Selection Notes

Select this variant when a fixed closed-loop gain of 4V/V is required. Compare against LTC6404-1 or -2 if different gain settings are needed. Consider the integrated filter for applications requiring inherent bandwidth limiting. Verify supply voltage compatibility within the 2.7V to 5.25V range.

Part Context

This component belongs to the LTC6404 family of AC precision amplifiers designed for driving high-resolution ADCs. The family includes variants with unity gain (-1), gain of 2V/V (-2), and gain of 4V/V (-4). All share similar low noise and distortion characteristics but differ in stability and bandwidth configurations.

Replacement Considerations

LTC6404IUD-4#PBF offers extended industrial temperature range. LTC6404HUD-4#PBF provides wide temperature operation. Direct pin-compatible alternatives within the same family should be evaluated based on thermal and gain requirements.