LTC6404CUD-2#PBF

Overview

The LTC6404CUD-2#PBF is a low noise, high precision fully differential input/output amplifier optimized for single-supply operation. It features a closed-loop bandwidth extending from DC to 600MHz and includes a built-in 88.5MHz differential single-pole lowpass filter with additional filtered outputs. Designed for gains greater than or equal to 2V/V, it provides rail-to-rail output swing and adjustable output common mode voltage. The device operates on supply voltages ranging from 2.7V to 5.25V.

Feature Summary

• Fully differential input and output architecture
• Built-in 88.5MHz differential single-pole lowpass filter
• Adjustable output common mode voltage
• Hardware shutdown feature

Applications

• Differential A/D converter driver
• Single-ended to differential conversion/amplification
• Common mode level translation

Procurement Notes

Verify the specific suffix '#PBF' indicates lead-free finish and tube packaging when sourcing. Confirm the 'C' grade designation corresponds to the required commercial temperature range of 0°C to 70°C for your application environment. Ensure the pinout matches the 16-lead QFN package specifications provided in the official datasheet before finalizing procurement orders.

Selection Notes

Select this component when a gain of at least 2V/V is required, distinguishing it from the unity-gain LTC6404-1 variant. Consider the integrated filtering capability if out-of-band signal rejection is needed without external components. Evaluate the power consumption against system constraints, noting the hardware shutdown option significantly reduces current draw during inactive periods.

Part Context

This part belongs to the LTC6404 family of AC precision amplifiers designed for driving state-of-the-art 16-bit and 18-bit ADCs. The family includes variants optimized for different closed-loop gains (1V/V, 2V/V, and 4V/V). All members share the same compact 3mm x 3mm QFN package and low noise characteristics, facilitating consistent design across different signal processing stages.

Replacement Considerations

LTC6404IUD-2#PBF offers an extended industrial temperature range (-40°C to 85°C). LTC6404HUD-2#PBF provides an extended automotive/industrial range (-40°C to 125°C). Verify thermal requirements before substituting.