1. AS358AMTR-G1 Substitution Conclusion The AS358AMTR-G1 cannot serve as a direct replacement for the AD8682ARZ-REEL due to significant differences in key performance parameters. It may only be considered in non‑critical applications where precision, speed, and power consumption are not essential. The primary discrepancies are as follows: First, the input bias current degrades from 6 pA (AD8682) to 20 nA (AS358)—a difference exceeding 3000×—making the AS358 unsuitable for high‑impedance signal sources or precision integrator circuits, where it would introduce substantial DC error. Second, the input offset voltage increases from 350 µV to 2 mV (roughly a 6× degradation in accuracy), severely limiting its use in low‑level signal amplification or high‑precision measurement circuits. Finally, the quiescent current per channel rises from 210 µA to 700 µA. Moreover, the AD8682’s JFET‑input architecture provides superior bandwidth (3.5 MHz) and slew rate (9 V/µs), whereas the AS358, as a general‑purpose op‑amp, typically offers lower dynamic performance. Taken together, these differences restrict the AS358 to only the most undemanding general‑purpose amplification roles. In any application involving precision, low power, or moderate speed, substituting with the AS358 would result in system performance falling below specification.