LF398 MDC

Overview

The LF398-MDC is a monolithic sample-and-hold amplifier die manufactured by Texas Instruments. It utilizes BI-FET technology to provide high-speed signal acquisition and precise voltage holding capabilities. The component is designed for applications requiring accurate analog data capture, featuring low droop rates and fast acquisition times suitable for precision measurement systems.

Feature Summary

• Monolithic integration of sample-and-hold circuitry on a bare die substrate
• BI-FET input stage providing high input impedance and low bias current
• High-speed acquisition capability for rapid signal sampling
• Low droop rate ensuring stable voltage hold during conversion periods

Applications

• Precision analog-to-digital converter front-ends
• Data acquisition systems requiring signal conditioning
• Frequency-to-voltage conversion circuits
• Multiplexed analog input channels

Procurement Notes

Verify the specific suffix MDC indicates bare die configuration rather than packaged units. Confirm compatibility with custom packaging or flip-chip mounting processes. Ensure handling procedures account for the exposed die nature. Validate that the supplier provides traceability documentation consistent with semiconductor manufacturing standards.

Selection Notes

Select this component when system design requires integrating sample-and-hold functionality directly into custom hybrid modules or specialized packaging solutions. Consider the need for external hold capacitors and drive circuitry compatible with the die's output characteristics. Evaluate thermal management requirements associated with bare die implementation in the final assembly.

Part Context

The LF398 belongs to a family of monolithic sample-and-hold amplifiers including variants like LF198 and LF298. These devices are widely used in instrumentation and industrial control. The MDC suffix typically denotes a die form factor, distinguishing it from packaged versions such as the LF398N or LF398MX available in DIP or SOIC packages.