The feasibility of substituting the AD629ARZ with the INA154U/2K5 is limited, primarily due to differences in amplifier type. The AD629ARZ is a dedicated current-sense amplifier, whereas the INA154U/2K5 is a general-purpose differential amplifier. The INA154U/2K5 may lack the high common-mode voltage rejection and specific input characteristics required for current-sensing applications. Key technical differences include: the INA154U/2K5 offers a higher slew rate (14 V/µs vs. 2.1 V/µs) and bandwidth (3.1 MHz vs. 500 kHz), indicating it is better suited for high-frequency signal processing and fast-response scenarios. Its lower input offset voltage (100 µV vs. 200 µV) provides higher accuracy and reduced signal error. However, its higher supply current (2.4 mA vs. 900 µA) results in greater power consumption, making it unsuitable for low-power designs. Additionally, its higher minimum supply voltage (8 V vs. 5 V) limits its applicability in low-voltage systems. The INA154U/2K5 may only be considered as a substitute in applications where dedicated current-sensing functionality is not required, and where supply voltage and power consumption constraints are met. Even then, additional validation of parameters such as common-mode rejection and input range is necessary.