2. ALD2704BSAL Substitution Conclusion Direct substitution feasibility is below average. It should only be considered after a rigorous evaluation of key system parameters. The core differences from the original part are: The input offset voltage is 2mV (compared to 160µV for the original), still an order of magnitude higher, which directly impacts DC accuracy. The supply voltage range is narrowed to 6.5V to 10V (originally 4V to 12V), raising the minimum operating voltage while lowering the maximum withstand voltage, making it incompatible with wider or lower supply schemes in the original design. The quiescent current rises to 5mA (originally ~320µA), resulting in significantly higher power consumption. Its advantages include an improved slew rate of 5V/µs and stronger output current capability, offering superior dynamic performance, although its gain bandwidth product of 2.1MHz remains slightly lower than the original part. It is only suitable for applications where offset voltage requirements are not stringent, the supply voltage is matched, and greater emphasis is placed on output drive and transient response.