LTC6404HUD-2#PBF

Overview

The LTC6404HUD-2#PBF is a high-speed, low-noise, fully differential input/output amplifier designed for single-supply operation. It features a closed-loop bandwidth extending from DC to 600MHz and a slew rate of 700V/μs. The device operates on supply voltages ranging from 2.7V to 5.25V with a typical supply current of 29.8mA. It includes an integrated 88.5MHz differential low-pass filter and hardware shutdown capability that reduces current consumption to approximately 250μA.

Feature Summary

• Fully differential architecture with adjustable output common mode voltage
• Integrated 88.5MHz differential single-pole low-pass filter
• Hardware shutdown feature for low power standby mode
• Rail-to-rail output swing with input range extending to ground

Applications

• Differential input to analog-to-digital converter (ADC) driving
• Single-ended to differential conversion and amplification
• Common mode level translation in signal processing chains

Procurement Notes

Verify the specific suffix 'HUD' indicates the extended temperature grade (-40°C to 125°C). Confirm the '-2' designation matches the required gain stability characteristics. Ensure the QFN-16 package footprint aligns with the PCB layout requirements before finalizing procurement orders.

Selection Notes

Select this variant when a closed-loop gain greater than or equal to 2V/V is required. It is optimized for applications needing high precision and low distortion at frequencies up to 600MHz. Consider the integrated filtering if system-level component count reduction is a priority compared to external filtering solutions.

Part Context

This component belongs to the LTC6404 family of AC precision amplifiers. The HUD suffix denotes the industrial/hardened temperature range extension compared to standard commercial variants. The -2 model variant is specifically tuned for stability at gains of 2V/V or higher, distinguishing it from unity-gain stable versions.

Replacement Considerations

LTC6404IUD-2#PBF

FAQ

What is the minimum stable closed-loop gain for the LTC6404-2?

The LTC6404-2 is designed for closed-loop gains greater than or equal to 2V/V.

How does the shutdown pin affect power consumption?

Activating the hardware shutdown feature reduces the supply current consumption significantly, typically down to approximately 250μA depending on the supply voltage.