Original Part
Alternative Part
1. LM224ADRG4 Substitution Conclusion
The LM224ADRG4 is compatible with the original LM224WDT in most key parameters and can serve as a substitute, though several differences should be noted: its output current is 30 mA, lower than the original’s 40 mA, resulting in reduced drive capability that may be unsuitable for high‑current load applications; the slew rate is slightly higher (0.5 V/µs vs. 0.4 V/µs), which benefits high‑speed signal response, but the gain‑bandwidth product is marginally lower (1.2 MHz vs. 1.3 MHz), potentially affecting high‑frequency performance; input bias current is lower (15 nA vs. 20 nA), improving input accuracy; supply current is slightly lower (1.4 mA vs. 1.5 mA), offering better power efficiency. Overall, if the application does not demand high output current and can tolerate minor bandwidth variation, the LM224ADRG4 is a viable alternative, but load matching and frequency response should be verified in the actual circuit.
2. LM224KADG4 Substitution Conclusion
The LM224KADG4 shares identical parameters with the LM224ADRG4; therefore, the substitution conclusion is similar: it can replace the original LM224WDT but exhibits the same differences, including lower output current (30 mA vs. 40 mA) and reduced drive capability, which may limit its use in heavy‑load applications; the slightly higher slew rate (0.5 V/µs) and marginally lower gain‑bandwidth product (1.2 MHz) provide a speed advantage at the expense of some bandwidth; improved input bias current (15 nA) and lower power consumption (1.4 mA) benefit precision and energy efficiency. Given the identical specifications, the feasibility of substituting with LM224KADG4 depends on the application requirements. If output current and bandwidth are not critical constraints, substitution is acceptable, but testing in the actual circuit is recommended to ensure performance compatibility.
Analysis ID: EBC6-493C000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com