1. LMV324BG-13 Substitution Conclusion Overall, the LMV324BG-13 can serve as an emergency substitute with degraded performance and higher power consumption in applications where the supply voltage is permissible and precision requirements are not stringent, but it is not an ideal replacement. While it is compatible with the original part in terms of package and basic functionality, its core performance parameters differ significantly. First, its minimum operating voltage is 2.7V, higher than the original's 1.8V, rendering it unsuitable for ultra-low-voltage systems operating between 1.8V and 2.7V. Second, its input offset voltage (1.7 mV) is over three times that of the original (500 µV), and its input bias current (15 nA) is four orders of magnitude higher than the original's (3 pA). In amplification or sensor signal conditioning circuits requiring high DC precision and high input impedance, this will introduce greater error and temperature drift. Furthermore, its quiescent current (340 µA per quad channel) is substantially higher than the original's (90 µA per quad channel), which would significantly shorten battery life in portable devices. Its advantage lies in a higher output drive current (90 mA), but this comes at the expense of increased power consumption and reduced precision.