2. LMV358M8G-13 Substitution Conclusion The LMV358M8G-13 is largely a viable substitute for the original part, but careful evaluation is required for low-voltage supply and high-precision scenarios. Its main differences include: ① A higher slew rate (1 V/µs vs. 0.42 V/µs) provides stronger dynamic response capability, although its gain bandwidth product is slightly lower (1 MHz vs. 1.5 MHz), potentially limiting high-frequency small-signal gain. ② The input offset voltage is slightly higher (1.7 mV vs. 1 mV), which may necessitate calibration for applications with stringent DC accuracy requirements. ③ The supply voltage lower limit is higher (2.7 V vs. 1.8 V), preventing coverage of the low-voltage operating range from 1.8V to 2.7V. ④ The quiescent current is significantly larger (190 µA per dual vs. 116 µA per dual), representing a clear power consumption disadvantage. ⑤ Output current (90 mA) and package compatibility are similar to the original part. If the application supply voltage is above 2.7V and can tolerate the slightly higher offset and power consumption, its dynamic performance advantage makes it a suitable substitute. Summary Both the TSV622AIST and LMV358M8G-13 offer pin compatibility and rail-to-rail output characteristics, covering a portion of the original part's application space. However, their core performance trade-offs differ significantly. The TSV622AIST excels with extremely low power consumption and pA-level input bias current, at the cost of substantially reduced bandwidth and slew rate, making it suitable for low-frequency precision and portable devices. The LMV358M8G-13 improves dynamic response with a higher slew rate but sacrifices low-voltage compatibility and power efficiency, making it better suited for medium-voltage supply applications with higher transient response requirements. Ultimately, the feasibility of substitution depends on the system's priority weighting of supply voltage range, dynamic performance, static power consumption, and input precision.