1. LM2902DR2G Substitution Conclusion The LM2902DR2G is a viable substitute in terms of basic functionality and package compatibility. However, significant differences exist in its key parameters: the gain bandwidth product is increased to 1 MHz (original: 100 kHz), output current capability is enhanced to 40 mA (original: 10 mA), and the maximum operating voltage is extended to 32 V (original: 26 V). This part offers advantages in dynamic response, load driving capability, and power supply adaptability. Its input bias current, however, is notably higher at 90 nA (original: 2 nA), which introduces greater input error and makes it unsuitable for high-precision, high-impedance signal conditioning applications. Furthermore, the absence of slew rate and quiescent current data may indicate potential differences in dynamic performance or power consumption. Substitution is acceptable if the application prioritizes drive strength or wide voltage range and has relaxed input accuracy requirements. If the original design relies on low input current characteristics, substitution is not feasible.