1. AD8602DRZ-REEL7 Substitution Conclusion Direct substitution is not recommended and should only be considered for specific, non-critical applications. The AD8602DRZ-REEL7 exhibits significant deviations from the original TS1872IYDT in key parameters. Its supply voltage range (2.7V to 5.5V) is narrower than that of the TS1872 (1.8V to 6V), rendering it inoperable at lower (e.g., 1.8V) or higher (e.g., 6V) voltages. The input offset voltage (1.3mV) is substantially higher than the TS1872's 100µV, which could introduce unacceptable static error in applications demanding high DC precision, such as sensor signal conditioning. Furthermore, it lacks the AEC-Q100 automotive-grade qualification of the TS1872, making it unsuitable for environments requiring automotive-level reliability. Although it offers higher bandwidth and slew rate (beneficial for higher-speed signals) and extremely low input bias current (suitable for high-impedance sources), these advantages do not compensate for the fundamental gaps in supply adaptability, precision, and reliability grade.