1. OP282GSZ Substitution Conclusion The OP282GSZ can serve as a drop-in replacement for the original MC33072ADR2G, sharing package compatibility (8-SOIC) and a dual-channel architecture. However, key technical differences limit its universality. Its supply voltage range is narrower (9V to 36V vs. 3V to 44V), precluding operation in low-voltage (e.g., single-supply 3V) or high-voltage (>36V) applications. Its slew rate (9 V/µs vs. 13 V/µs) and gain-bandwidth product (4 MHz vs. 4.5 MHz) are slightly lower, which may lead to a minor degradation in high-speed signal processing performance. Furthermore, its lower output current (10 mA vs. 30 mA) provides insufficient drive capability for heavy loads. The J-FET design of the OP282GSZ offers distinct advantages: extremely low input bias current (3 pA vs. 100 nA) and lower offset voltage (200 µV vs. 500 µV), making it suitable for high-input-impedance, high-precision measurement circuits. It also features significantly lower quiescent current (210 µA/channel vs. 1.9 mA/channel). In summary, the OP282GSZ can be considered a viable substitute if the application is confined to medium-to-low speed operation, a supply voltage between 9V and 36V, light loads, and requires high input precision. Otherwise, the power supply, speed, and drive requirements must be carefully evaluated for compatibility.