1. ISL28114FEZ-T7A Substitution Conclusion The ISL28114FEZ-T7A can fully replace the AD8515AKSZ-R2 and offers superior performance in multiple aspects. Both share the same package (SC70-5) and have highly overlapping supply voltage ranges (both operate from 1.8V, with the ISL28114FEZ-T7A supporting a slightly higher maximum of 5.5V). Their core bandwidth (5MHz) and rail-to-rail output characteristics are identical. Key differences include: The ISL28114FEZ-T7A features a lower input offset voltage (500µV vs. 1mV), providing higher DC accuracy. Its lower input bias current (3pA vs. 5pA) makes it more suitable for high-impedance sensor interfaces. The device also exhibits a lower quiescent current (300µA vs. 410µA), contributing to reduced system power consumption. Furthermore, it offers stronger output drive capability (31mA vs. 20mA), enabling it to drive heavier loads. The only slightly inferior parameter is the slew rate (2.5V/µs vs. 2.7V/µs), a negligible difference with no practical impact for general applications. While maintaining compatibility, the ISL28114FEZ-T7A provides improvements in precision, power consumption, and drive capability, making it a direct replacement.