1. LM224WDT Substitution Conclusion The LM224WDT can generally serve as a replacement for the NJM2902M, but key performance and power consumption differences must be evaluated based on the specific application. These differences include: gain bandwidth product (GBW) (LM224WDT: 1.3 MHz, superior to NJM2902M's 500 kHz, offering better high-frequency signal processing capability), slew rate (LM224WDT: 0.4V/µs, slightly lower than NJM2902M's 0.5V/µs, which may result in marginally slower large-signal transient response), quiescent current (LM224WDT: 1.5mA, 50% higher than NJM2902M's 1mA, increasing power consumption—a critical factor in battery-powered applications), and maximum supply voltage (LM224WDT: 30V, lower than NJM2902M's 32V, limiting compatibility in higher-voltage applications). If the application does not require the maximum voltage rating and can tolerate slightly higher power draw, the LM224WDT, with its superior bandwidth, is a viable substitute. Conversely, in low-power or high-voltage scenarios, careful verification is recommended.