JL198SGA

Overview

The JL198SGA is a monolithic sample-and-hold circuit utilizing BI-FET technology for high accuracy and fast signal acquisition. It operates from ±5V to ±18V supplies with less than 10 μs acquisition time. The device features TTL, PMOS, and CMOS compatible logic inputs, low input offset voltage, and wide bandwidth. It provides unity gain follower operation with 0.002% typical DC gain accuracy and low droop rate.

Feature Summary

• Monolithic design using BI-FET technology for ultra-high dc accuracy and fast acquisition
• Compatible with TTL, PMOS, and CMOS logic inputs via fully differential devices
• Space qualified ceramic packaging suitable for harsh environments
• Low output noise in hold mode with high supply rejection ratio

Applications

• Data acquisition systems requiring precise analog signal sampling
• Space-based applications demanding radiation tolerance
• Military and defense electronic circuits
• High-speed analog-to-digital converter front-ends

Procurement Notes

Verify the specific ordering suffix 'SGA' against the latest Texas Instruments Package Option Addendum to confirm current production status and material specifications. Ensure that the TO-99 (LMC) package dimensions align with your mechanical constraints. Confirm compliance with Mil-Std-883 quality conformance inspection requirements before finalizing procurement orders.

Selection Notes

Select this component when space qualification and radiation tolerance are mandatory for the application. Consider the BI-FET technology benefits for low noise and high input impedance requirements. Evaluate the ±5V to ±18V supply range compatibility with existing system power rails. Assess the need for TTL/PMOS/CMOS logic interface compatibility within the control circuitry.

Part Context

This part belongs to the LF198JAN family of monolithic sample-and-hold circuits manufactured by Texas Instruments. It is specifically designated for military and space-grade applications, adhering to strict reliability standards. The JL198SGA variant utilizes a hermetically sealed TO-99 ceramic package to ensure performance under extreme environmental conditions.

Replacement Considerations

Direct replacements include other parts within the LF198JAN family such as the JL198BGA or standard commercial variants like the LF198H/NOPB if space qualification is not required. Verify pinout compatibility and electrical parameter overlaps before substituting.