1. AD8602DRMZ-REEL Substitution Conclusion The AD8602DRMZ-REEL is generally compatible with the original part in terms of package and supply voltage range, making it a potential substitute. However, key performance parameters differ significantly: its gain-bandwidth product (8.4 MHz) and slew rate (6 V/µs) are both lower than those of the original part (20 MHz, 10 V/µs), which will limit bandwidth and response speed in high-frequency or fast-transient signal applications. Additionally, its input offset voltage (1.3 mV) is substantially higher than the original's (100 µV), introducing greater DC error and degrading accuracy in precision amplification or DC-coupled circuits. On the other hand, its input bias current (0.2 pA) is lower, making it more suitable for high-impedance sensor signal acquisition. Substitution may be considered if the application does not demand high bandwidth, speed, or DC precision but requires very low input current.