2. LMV321IDBVT Substitution Conclusion While the LMV321IDBVT matches the bandwidth and package, critical parameter mismatches introduce high substitution risk, requiring careful evaluation. The most significant deviation is its input bias current of 15nA, which is nearly four orders of magnitude higher than the original's 2pA. When used with high-impedance sources, in integrator circuits, or as a precision sensor front-end, this will generate substantial input offset error, severely degrading accuracy. Furthermore, its quiescent current (130µA) is notably higher than the original (85µA), making it unsuitable for low-power applications. Although it offers a slightly higher slew rate (1V/µs), its supply range (2.7V-5.5V) similarly cannot cover the original's 1.8V low-voltage applications. Substitution should only be considered in general-purpose, non-precision circuits where input bias current is highly non-critical and the supply voltage matches.