LM158AH

Overview

The LM158AH is a military-grade dual operational amplifier manufactured by Texas Instruments. It features two independent, high-gain, internally frequency-compensated amplifiers designed for single or split power supply operation. Key electrical parameters include a gain-bandwidth product of 700 kHz, a slew rate of 300 mV/us, and an input offset voltage of 2 mV. The device operates with a supply voltage range from 3 V to 32 V (or ±1.5 V to ±16 V) and draws a typical quiescent current of 500 uA per channel. It supports a common-mode rejection ratio of 80 dB and provides an output current of 20 mA per channel within the -55°C to +125°C temperature range.

Feature Summary

• Military-grade construction suitable for demanding environments
• Internal frequency compensation ensures stability in unity-gain configurations
• Input common-mode voltage range includes ground for direct sensing near zero volts
• Low power consumption that remains essentially independent of supply voltage

Applications

• Sensor signal conditioning and amplification
• DC gain blocks in instrumentation circuits
• Active filter implementations
• Current loop transmitter interfaces

Procurement Notes

Verify the specific suffix 'AH' against the manufacturer's official datasheet to confirm military qualification status and exact parameter limits. Ensure the TO-99-8 package variant matches the design requirements. Cross-reference the RoHS compliance status as indicated in distributor listings, noting potential variations between legacy military stock and standard production runs.

Selection Notes

Select this component when military reliability standards are required alongside low-power single-supply operation. The 700 kHz bandwidth and 2 mV offset voltage make it suitable for precision applications where general-purpose amplifiers lack sufficient accuracy. Consider the TO-99-8 package constraints for thermal management and board space compared to plastic DIP alternatives.

Part Context

The LM158 series belongs to Texas Instruments' family of dual operational amplifiers, derived from the classic LM158/LM258/LM358 lineage but enhanced for extended temperature ranges and military specifications. Unlike commercial variants, the LM158AH undergoes rigorous testing under MIL-PRF-38535 standards, ensuring consistent performance across extreme environmental conditions while maintaining compatibility with standard op-amp circuit topologies.

Replacement Considerations

LM158AH/NOPB