LT6375HDF#TRPBF

Instrumentation, Op Amps, Buffer Amps Overview

The LT6375HDF#TRPBF is a unity-gain difference amplifier featuring ±270V common mode voltage range and a wide supply voltage range of 3.3V to 50V. It integrates a precision op amp with Over-The-Top protected inputs and a highly-matched thin film resistor network. The device offers selectable internal resistor divider ratios, low power shutdown capability in the DFN package, and rail-to-rail output. It is specified for operation from –40°C to 125°C.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Integrates selectable internal resistor divider ratios to optimize system performance for specific input common mode voltage ranges.
• Features Over-The-Top protected inputs allowing robust operation in environments with unpredictable high voltage conditions.
• Includes a low power shutdown mode available exclusively in the DFN package configuration.

Instrumentation, Op Amps, Buffer Amps Applications

• High Side or Low Side Current Sensing
• Bidirectional Wide Common Mode Range Current Sensing
• High Voltage to Low Voltage Level Translation
• Industrial Data-Acquisition Front-Ends

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the H suffix indicates the extended temperature grade (-40°C to 125°C) compared to the I grade. Confirm the #TRPBF suffix denotes tape and reel packaging for the DFN-14 package. Ensure the application circuit respects the absolute maximum ratings for differential input voltages and supply rails.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component when high common mode rejection and precision are required at elevated input voltages. Choose the DFN package if space saving and low power shutdown are priorities. Consider the trade-off between bandwidth and noise when configuring the internal resistor divider ratio for the specific application requirements.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the LT6375 family of difference amplifiers designed for high voltage signal conditioning. It serves as a replacement for isolation circuits in data acquisition systems. The device combines DC precision with a wide input common mode range, making it suitable for industrial monitoring applications requiring accurate signal translation.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

LT6375IDF#TRPBF (I-grade, -40°C to 85°C)

Instrumentation, Op Amps, Buffer Amps FAQ

How does the selectable resistor divider ratio affect performance?

A higher resistor divider ratio enables a higher common mode voltage range but increases output noise, offset/drift, and decreases the -3dB bandwidth. Users should select the lowest ratio that achieves the required input range to maximize SNR and speed.

What is the function of the SHDN pin?

The SHDN pin is available only in the DFN package. Pulling this pin more than 2.5V below V+ causes the amplifier to enter a low power state with reduced supply current.