1. OPA2614IDR Substitution Conclusion Conditional substitution; careful evaluation of the application context is required. The OPA2614IDR is compatible with the AD8058ARZ in core architecture (voltage-feedback, dual-channel) and package. However, a key difference is its differential output type, which mandates a differential interface in the subsequent circuit; otherwise, direct substitution is not possible. Performance-wise, its -3dB bandwidth (180 MHz) and slew rate (145 V/µs) are significantly lower than those of the AD8058ARZ (325 MHz, 1150 V/µs), resulting in reduced capability for processing high-frequency or fast transient signals. It is therefore unsuitable for the ultra-high-speed applications for which the original design was intended. On the other hand, its input offset voltage (200 µV) is far superior to that of the original part (1 mV), which benefits DC accuracy. However, its input bias current (6 µA) is 12 times larger, which will generate greater offset error in high-source-impedance applications. If the original design is not an extreme high-speed application and the circuit can be adapted for differential reception, this part can be considered as an alternative option offering high output current (350 mA).