1. Substitution Feasibility of BU7244SF-E2 The BU7244SF-E2 is not a viable substitute for the LMV824AIDT due to significant performance gaps in key parameters. Its gain-bandwidth product drops from 5.5 MHz to 900 kHz, and the slew rate is reduced from 1.9 V/µs to 0.4 V/µs. These limitations render it unsuitable for high-frequency or fast-transient signal processing, where insufficient bandwidth and response speed may cause amplifier distortion or signal delay. Furthermore, its output current decreases from 70 mA to 12 mA, limiting load-driving capability, while the higher input offset voltage (1 mV vs. 800 µV) degrades DC accuracy. Although its extremely low input bias current (1 pA vs. 60 nA) is advantageous for high-impedance sensor applications, and its wider supply voltage range (1.8V–5.5V) supports lower-voltage operation, the overall performance downgrade restricts its use to low-frequency, low-power applications where speed and precision are not critical. Additionally, the absence of AEC-Q100 automotive-grade qualification makes it unsuitable for automotive environments. 2. Substitution Feasibility of BU7487F-E2 The BU7487F-E2 is a partially feasible substitute for the LMV824AIDT, but application requirements must be carefully weighed. It offers improved performance in high-frequency or high-speed signal processing, with a gain-bandwidth product of 10 MHz and a slew rate of 10 V/µs, making it suitable for applications such as audio or data acquisition that demand higher bandwidth. However, its supply current increases significantly from 300 µA to 6 mA, which may preclude its use in battery-powered or low-power designs. The output current is also reduced from 70 mA to 12 mA, limiting drive capability. While its extremely low input bias current (1 pA) is an advantage, the higher input offset voltage (1 mV vs. 800 µV) may affect precision amplification accuracy. The narrower supply voltage range (3V–5.5V vs. 2.5V–5.5V) also restricts low-voltage adaptability. Furthermore, the lack of automotive-grade certification requires careful evaluation for automotive applications.