1. TL072CDT Substitution Conclusion From a core performance perspective, the TL072CDT has significant limitations as a direct replacement for the AD8512BRZ-REEL. The TL072 features a lower gain-bandwidth product (4 MHz vs. 8 MHz) and a slower slew rate (16 V/µs vs. 20 V/µs), which will degrade high-frequency signal processing capability and transient response speed. Its input offset voltage (3 mV vs. 80 µV) is nearly 40 times higher, introducing non-negligible DC error and making it unsuitable for high-precision amplification or DC-sensitive circuits. However, the TL072 offers slightly better input bias current (20 pA vs. 25 pA), a wider supply range (6-36 V), and lower quiescent current (1.4 mA vs. 2.2 mA per channel). It also carries AEC-Q100 automotive-grade qualification. For applications with relaxed bandwidth and precision requirements, but where low power consumption, wide supply voltage, or automotive environment compatibility are needed, the TL072 can serve as a cost-effective alternative, provided system error and frequency response are re-evaluated.