1. AD8613AUJZ-R2 Substitution Conclusion From the perspective of electrical parameters and package compatibility, the AD8613AUJZ-R2 can physically replace the original part OPA364IDBVRG4. However, this substitution is only viable in very low-speed, ultra-low-power DC or low-frequency applications and requires careful evaluation. The core distinction lies in their performance positioning. The AD8613AUJZ-R2's gain bandwidth product (400 kHz) and slew rate (0.1 V/µs) are significantly lower than those of the original part (7 MHz, 5 V/µs). It is entirely incapable of handling mid-to-high-frequency signals and is suitable only for applications with minimal signal speed requirements, such as temperature sensing or battery monitoring. Its key advantage is a quiescent current (38 µA) approximately 30 times lower than the original's (1.1 mA), which is a significant benefit for battery-powered devices. Additionally, it offers slight advantages in input bias current (0.2 pA) and offset voltage (400 µV). Its output drive current (80 mA) is slightly lower, and its supply voltage upper limit (5 V) is slightly narrower than the original's (5.5 V). Attention must be paid to margin when driving heavier loads or operating from a single 5V supply.