LF398MX/NOPB

Overview

The LF398MX/NOPB is a monolithic sample and hold amplifier manufactured by Texas Instruments. It utilizes BI-FET technology to provide high-speed signal acquisition capabilities. The device features a capture time of 4 microseconds, ensuring rapid data sampling for analog-to-digital conversion processes. It operates within a supply voltage range of 5 volts to 18 volts. The component is designed for through-hole or surface-mount installation in a SOIC-14 package. It supports analog input signals and functions effectively across an operating temperature range from 0 degrees Celsius to +70 degrees Celsius.

Feature Summary

• Monolithic construction integrating sample and hold circuitry on a single chip
• BI-FET technology implementation for enhanced performance characteristics
• Analog input processing capability for signal conditioning applications

Applications

• Data acquisition systems requiring precise signal sampling
• Frequency-to-voltage converters utilizing sample-and-hold techniques
• Analog-to-digital converter interfaces for multiplexed channels

Procurement Notes

Verify the specific package variant against design requirements, as the LF398 series includes both PDIP and SOIC options. Confirm RoHS compliance status via official manufacturer documentation before integration. Ensure the selected part number matches the required thermal and electrical specifications for the target application environment. Cross-reference ordering suffixes with Texas Instruments datasheets to confirm functional equivalence.

Selection Notes

Select this component when a dedicated sample and hold amplifier is required between an anti-aliasing filter and an ADC. Consider the 4 microsecond capture time relative to the input signal frequency and ADC conversion duration. Evaluate the SOIC-14 package suitability for the printed circuit board layout constraints. Verify that the operating temperature range aligns with the system's environmental conditions.

Part Context

This component belongs to the LF398 family of sample and hold amplifiers produced by Texas Instruments. The family offers various packaging options including PDIP and SOIC configurations. These devices are engineered to minimize aperture uncertainty and droop during the hold phase. They serve as critical interface elements in precision measurement systems where signal integrity during conversion is paramount.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.