LM158DT

Overview

The LM158DT is a dual low-power operational amplifier manufactured by STMicroelectronics, housed in an 8-pin SOIC surface-mount package. It features two independent, internally frequency-compensated amplifiers designed for single-supply operation across a wide voltage range of 3V to 30V. Key electrical parameters include a gain-bandwidth product of 1.1MHz, a slew rate of 0.6V/µs, and a typical DC voltage gain of 100dB. The device operates with a supply current of approximately 700µA for both channels and supports output currents up to 40mA per channel. It maintains functionality within an extended temperature range from -55°C to +125°C.

Feature Summary

• Internally frequency compensated for stability without external components
• Low power consumption essentially independent of supply voltage magnitude
• Input common-mode voltage range includes the negative rail (ground)
• Output voltage swing extends to ground potential

Applications

• Transducer amplifiers
• DC gain blocks
• Interface electronics for logic systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the tape and reel packaging configuration. Ensure the component meets AEC-Q100 automotive qualification requirements if intended for automotive applications. Cross-reference the datasheet revision date to confirm compatibility with current design specifications and environmental compliance standards such as RoHS.

Selection Notes

Select this component when designing circuits requiring low power dissipation and single-supply compatibility. It is suitable for applications where input signals approach ground potential and output must swing close to the negative rail. Consider the 1.1MHz bandwidth and 0.6V/µs slew rate for signal processing needs that do not require high-speed performance but benefit from low quiescent current.

Part Context

The LM158DT belongs to the LM158 series, which comprises dual operational amplifiers optimized for single-supply systems. This series allows direct interfacing with standard logic voltages like 5V without additional power supplies. The DT suffix indicates the Small Outline Package variant available in tape and reel format, facilitating automated surface-mount assembly processes.

Replacement Considerations

ADA4062-2ARZ is listed as a substitute part number.