2. LM224DR2G Substitution Conclusion The LM224DR2G can be considered as an alternative in applications where a significant degradation in input error characteristics is acceptable and ultra-low power consumption is not critical. The primary differences are: Its input bias current (90nA) is substantially higher than the original's 20nA. This will generate larger input error currents and offset voltages in circuits with high-impedance sources or in precision integrators, adversely affecting accuracy. Its gain-bandwidth product (1MHz) is superior to the original, offering better dynamic performance, and it provides stronger output drive current (40mA). The maximum supply voltage (32V) matches the original, ensuring good compatibility. However, the quiescent current parameter is unspecified; based on similar devices, its power consumption is typically higher than that of the BA2902F. This part is more suitable for applications less sensitive to input bias current but requiring moderately higher bandwidth and stronger output drive capability.