LM258AD

Overview

The LM258AD is a dual low-power operational amplifier manufactured by STMicroelectronics. It features two independent, internally frequency-compensated op-amps designed for single-supply operation over a wide voltage range of 3 V to 30 V. The device offers a gain-bandwidth product of 1.1 MHz and a slew rate of 0.6 V/µs. Key electrical characteristics include an input offset voltage of 2 mV, input bias current of 20 nA, and supply current of 0.7 mA at 5 V. It operates within a temperature range of -40°C to +105°C and is available in SO-8 surface-mount packaging.

Feature Summary

• Internally frequency-compensated for stability in standard configurations
• Low power supply drain that remains essentially independent of the supply voltage magnitude
• Input common-mode voltage range includes ground (negative rail)
• Output voltage can swing to ground even with single-supply operation

Applications

• Transducer amplifiers
• DC gain blocks
• Single-supply interface electronics

Procurement Notes

Verify the specific package variant (SO-8) and ensure the component grade matches the required industrial temperature range (-40°C to +105°C). Confirm that the ordering suffix corresponds to the intended tube or tape-and-reel packaging configuration as listed in the manufacturer's official ordering information table.

Selection Notes

Select this component when a low-cost, low-power dual op-amp is required for single-supply applications. It is suitable for general-purpose signal conditioning where rail-to-rail output is not strictly necessary but ground-referenced output is desired. Ensure the application does not require negative supply rails exceeding the specified limits.

Part Context

The LM258AD belongs to the LM258 family of low-power dual operational amplifiers from STMicroelectronics. This series is specifically engineered for single-supply systems, allowing direct interfacing with standard logic voltages like +5 V without additional power supplies. The 'A' suffix denotes improved specifications such as lower input offset voltage compared to the standard LM258.

Replacement Considerations

LM258D

FAQ

Can the LM258AD operate with a single 5 V supply?

Yes, the device is specifically designed to operate from a single power supply over a wide range of voltages, including the standard +5 V used in logic systems.

Does the input common-mode voltage range include ground?

Yes, in linear mode, the input common-mode voltage range includes ground, allowing inputs to be referenced to the negative rail.