1. ALD2702ASAL Substitution Conclusion Direct substitution carries significant risk and can only be considered under specific conditions. The key differences between the ALD2702ASAL and the original MCP6H72T are as follows: First, its supply voltage range is narrower (4–10V vs. 3.5–12V), making it incompatible if the system operates below 4V or above 10V. Second, its quiescent current is significantly higher (2mA vs. 0.96mA), increasing power consumption by approximately 108%, which may be unacceptable for battery-powered or low-power designs. Third, its output drive capability is substantially weaker (8mA vs. 53mA), leading to potential distortion or voltage drop when driving low-impedance loads. Fourth, it exhibits a higher input offset voltage (5mV vs. 1mV), which degrades DC accuracy. Although it offers lower input bias current (1pA) and slightly higher slew rate (2.8V/µs), the core parameter discrepancies limit its viability as a general-purpose replacement. It may only be suitable for medium-to-low-speed signal conditioning applications where power consumption and output current are not critical, and the supply voltage is strictly matched.