1. AD8512BRZ-REEL7 Substitution Conclusion The feasibility of substituting this part is relatively low. While its J-FET input stage offers a significantly lower input bias current (25 pA vs. 700 nA) and superior input offset voltage (80 µV vs. 275 µV), making it suitable for high-impedance sensor signal conditioning, several critical differences limit its direct drop-in compatibility. These include: a lack of rail-to-rail output, which restricts signal swing in low-voltage single-supply applications; a narrower supply voltage range (10-30 V vs. 4-44 V), failing to cover the original part's wide-voltage application scenarios; and a lower slew rate (20 V/µs vs. 45 V/µs), which may lead to insufficient response for high-speed signals. This substitute is only viable in applications sensitive to input current and where the supply conditions match. It cannot directly replicate the general-purpose utility of the original component.