LTC6404CUD-1#PBF

Overview

The LTC6404CUD-1#PBF is a single-channel, fully differential input/output amplifier optimized for 3V single-supply operation. It features a closed-loop bandwidth of 600MHz and a slew rate of 450V/μs. The device operates on supply voltages from 2.7V to 5.25V with a typical supply current of 27.3mA. Key electrical specifications include an input-referred voltage noise density of 1.5nV/√Hz, a maximum differential offset voltage of 2mV, and an output short-circuit current capability of 85mA. It includes a hardware shutdown feature reducing current consumption to 250μA.

Feature Summary

• Fully differential input and output architecture supporting both single-ended and differential configurations
• Integrated 88.5MHz differential single-pole lowpass filter with dedicated filtered outputs
• Adjustable output common mode voltage allowing flexible level shifting
• Hardware shutdown pin for significant power reduction in standby modes

Applications

• Differential input ADC driver applications
• Single-ended to differential conversion and amplification
• Common mode level translation circuits
• Low voltage, low noise signal processing systems

Procurement Notes

Verify the specific suffix '#PBF' indicates lead-free finish and tube packaging when sourcing. Confirm the 'C' grade temperature range (0°C to 70°C) matches your environmental requirements against industrial or automotive variants. Ensure the DC1147A-A evaluation board is available if prototype testing is required before final implementation.

Selection Notes

Select this part for unity-gain stable applications requiring high precision. The C-grade variant is suitable for commercial environments. Consider the I or H grades if extended temperature ranges are necessary. Verify that the 600MHz bandwidth meets system frequency requirements and that the 1.5nV/√Hz noise floor is sufficient for the target signal chain.

Part Context

This component 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 gain-stable variants for gains of 1V/V, 2V/V, and 4V/V. All variants share the same compact 16-pin QFN package and core performance characteristics, differing primarily in internal feedback networks for stability at specific closed-loop gains.

Replacement Considerations

Public confirmed substitutes: None identified in provided documentation.