2. BU7487F-E2 Substitution Conclusion The BU7487F-E2 delivers significantly improved bandwidth and slew rate, making it suitable for high‑speed applications, but at the cost of substantially higher power consumption and weaker output drive capability, along with a different package size. Substitution requires a trade‑off between performance and power. Key differences include: a slew rate of 10 V/µs (original: 1 V/µs), enabling very fast signal response suitable for high‑speed data acquisition or audio processing; a gain‑bandwidth product of 10 MHz (original: 1 MHz), expanding bandwidth by a factor of ten to support amplification of higher‑frequency signals; an input bias current of 1 pA (original: 15 nA), similarly providing the advantage of high‑impedance input and reduced bias error; a supply current of 6 mA (original total current ≈1.64 mA), increasing power consumption by roughly 3.7×, which may significantly shorten battery life or increase thermal management demands; an output current of 12 mA (original: 40 mA), limiting drive capability and making it unsuitable for high‑current loads; a supply voltage range of 3 V to 5.5 V (original: 2.7 V to 5.5 V), with a slightly higher minimum voltage that restricts applications at very low voltages (e.g., below 2.7 V); and a package width of 4.40 mm (original: 3.90 mm), necessitating PCB layout redesign. If the application demands high‑speed performance and can tolerate higher power consumption, the BU7487F-E2 is a viable substitute, but drive capability and voltage compatibility must be verified.