LM224D

Overview

The LM224D is a low-power quad operational amplifier manufactured by STMicroelectronics, featuring four independent high-gain amplifiers with internal frequency compensation. It operates from a single power supply ranging from 3 V to 30 V or split supplies of ±1.5 V to ±15 V. Key electrical parameters include a gain-bandwidth product of 1.3 MHz, a slew rate of 400 mV/µs, and an input bias current as low as 20 nA. The device offers a maximum input offset voltage of 3 mV and supports an output current of 40 mA per channel. It is housed in a 14-SOIC surface-mount package and functions within a temperature range of -40°C to +105°C.

Feature Summary

• Internal frequency compensation eliminates the need for external components
• Wide single-supply operating voltage range from 3 V to 30 V
• Low power consumption independent of supply voltage magnitude
• Input common-mode voltage range includes ground potential

Applications

• Transducer amplifiers
• DC gain blocks
• Active filters

Procurement Notes

Verify the specific suffix 'D' indicates the SOIC-14 package configuration. Confirm RoHS compliance status and moisture sensitivity level requirements against project specifications. Ensure the ordering part number matches the exact manufacturer designation to avoid pinout discrepancies.

Selection Notes

Select this component when multiple low-power amplifiers are required in a compact surface-mount footprint. The wide single-supply capability simplifies power design compared to dual-supply alternatives. Verify that the 1.3 MHz bandwidth meets signal processing requirements.

Part Context

This device belongs to the LM224x series, which shares architectural similarities with the LM124 and LM324 families. These parts are characterized by low supply current drain and compatibility with standard operational amplifier circuits while offering improved power efficiency.

Replacement Considerations

Pin-compatible alternatives include the LM124 and LM324 series devices. Verify functional equivalence regarding gain-bandwidth and supply voltage limits before substitution.