LM158AJ

Overview

The LM158AJ is a military-grade, low-power dual operational amplifier manufactured by Texas Instruments under the LM158QML series. It features two internally frequency-compensated amplifiers designed for single-supply operation over a wide voltage range of 3V to 32V or dual supplies of ±1.5V to ±16V. The device provides high DC voltage gain of 100 dB and a unity-gain bandwidth of 1 MHz. It includes radiation specifications with a total dose capability of 100 krad(Si) and is ELDRS free. Electrical characteristics include an input offset voltage of 2 mV, input bias current of 50 nA, and power supply current of 1.2 mA at 5V.

Feature Summary

• Two independent, high-gain, internally frequency-compensated operational amplifiers
• Designed specifically for single power supply operation over a wide voltage range
• Available with radiation specifications including 100 krad(Si) tolerance and ELDRS-free performance
• Compatible with all forms of logic systems

Applications

• Transducer amplifiers
• DC gain blocks
• Conventional op amp circuits in single power supply systems
• Interface electronics for digital systems

Procurement Notes

Verify the specific ordering suffix (e.g., GA, VPA) against the Package Option Addendum to confirm the exact package type such as TO-99 or CDIP. Ensure the radiation specification matches the application requirements, distinguishing between High Dose Rate (SMD 5962–8771002) and ELDRS Free (SMD 5962–8771003) variants. Confirm compliance with MIL-STD-883 quality conformance inspection standards.

Selection Notes

Select this component when radiation hardness is required for space or high-altitude applications. The LM158AJ offers superior input offset voltage drift compared to standard commercial versions. Consider the available packages like TO-99 or CDIP for through-hole mounting needs. Verify that the single-supply operation meets the system's ground-referencing requirements.

Part Context

The LM158AJ belongs to the LM158QML family, which are low-power dual operational amplifiers. This series is distinct from commercial counterparts due to its qualification for military and aerospace environments. It shares the core architecture of the LM158/LM258/LM358 but adheres to stricter reliability and radiation testing protocols defined by QML standards.

Replacement Considerations

Direct replacements include other LM158QML variants with different suffixes for package options, such as LM158AH or LM158AWG/883. Ensure the replacement part matches the specific radiation qualification (High Dose Rate vs. ELDRS Free) required by the design.