2. ALD2732ASAL Substitution Conclusion Substitution is not viable. Although the ALD2732ASAL is compatible with the original device in package and rail-to-rail output characteristics, its core performance parameters are uniformly inferior. The gain-bandwidth product (1.5 MHz) and slew rate (1.9 V/µs) are only half those of the original part, the input bias current (10 pA) is an order of magnitude higher, the input offset voltage (600 µV) is nearly four times greater, and the upper supply range (10 V) is narrower. In applications requiring moderate bandwidth, good transient response, or wider supply adaptability—such as intermediate-frequency signal conditioning, active filters, or systems operating at ±5 V supplies—direct replacement with the ALD2732ASAL would limit signal bandwidth, slow response speed, and prevent operation at higher supply voltages. The resulting performance degradation is substantial and does not meet substitution requirements.