Original Part
Alternative Part
1. AD8620ARZ-REEL Substitution Conclusion
The AD8620ARZ-REEL is not a general-purpose drop-in replacement for the TL072CDT and requires careful evaluation. Its primary limitation is a narrower supply voltage range (10–26 V) compared to the TL072 (6–36 V), which may preclude operation in single-supply +5 V or higher dual-supply (e.g., ±15 V) applications. Performance-wise, it represents a significant upgrade: its gain-bandwidth product (25 MHz vs. 4 MHz) and slew rate (60 V/µs vs. 16 V/µs) far exceed those of the TL072, enabling it to handle higher frequency and faster signals. Moreover, its substantially improved input offset voltage (85 µV vs. 3 mV) and bias current (3 pA vs. 20 pA) deliver higher DC accuracy and lower input error. Note, however, that its quiescent current (3 mA per channel) is also considerably higher than that of the TL072 (1.4 mA total).
2. AD648JRZ-REEL7 Substitution Conclusion
The AD648JRZ-REEL7 can serve as a replacement for the TL072CDT only in specific low-power, low-bandwidth applications, with a noticeable performance downgrade. Its key advantage is an extremely low quiescent current (340 µA per channel), resulting in significantly lower power consumption than the TL072, making it well-suited for battery-powered equipment. However, its key performance parameters are substantially weaker than those of the TL072: a lower gain-bandwidth product (1 MHz vs. 4 MHz) and slew rate (1.8 V/µs vs. 16 V/µs) limit its ability to process the same bandwidth or fast-changing signals; its output drive capability (15 mA vs. 40 mA) is also lower, reducing its ability to drive low-impedance loads. Although its supply range (9–36 V) offers good compatibility with the TL072, the significant performance gap restricts its use to applications where speed and output drive are not critical.
Analysis ID: 9103-CD1A000
Based on part parameters and for reference only. Not to be used for procurement or production.
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