LF298H

Overview

The LF298H is a monolithic sample-and-hold amplifier manufactured by Texas Instruments. It integrates a single circuit within an 8-pin TO-99 metal can package. The device operates across an extended industrial temperature range, supporting minimum and maximum ambient temperatures of -40°C and +125°C respectively. Key electrical specifications include a bipolar input type and a typical acquisition time of 20 microseconds. The component is designed for high-speed analog signal processing applications requiring precise voltage retention during sampling intervals.

Feature Summary

• Monolithic integration of a complete sample-and-hold circuit in a single package
• Bipolar input architecture for analog signal handling
• Extended temperature operation suitable for harsh environments

Applications

• High-speed data acquisition systems
• Analog-to-digital converter front-end conditioning
• Pulse width modulation signal processing

Procurement Notes

Verify the specific suffix (e.g., NOPB) to confirm lead-free compliance and RoHS status against current datasheets. Ensure the TO-99-8 package variant matches the design requirements. Cross-reference the manufacturer part number with official Texas Instruments documentation to validate revision levels and availability before finalizing procurement decisions.

Selection Notes

Select this component when a dedicated sample-and-hold function is required without external discrete components. Consider the 20-microsecond acquisition time constraint for system timing budgets. Evaluate the TO-99 package for thermal management and mechanical robustness needs compared to plastic alternatives.

Part Context

The LF298H belongs to the LF298 series of sample-and-hold amplifiers from Texas Instruments. This series provides integrated solutions for capturing and holding analog voltages. The H variant specifically denotes the TO-99 metal can packaging option, distinguishing it from other package styles available within the same functional family.

Replacement Considerations

Consult official substitution guides for equivalent monolithic sample-and-hold amplifiers. Verify pin compatibility and acquisition time specifications when considering alternative manufacturers or updated series revisions.