1. TL3474AIPW Substitution Conclusion The TL3474AIPW is compatible with the original device in terms of package and supply voltage range; however, significant differences in key parameters make it unsuitable as a direct replacement. The primary deviations are as follows: First, the TL3474AIPW is a general-purpose standard amplifier (non-JFET), and its input bias current (100 nA) is substantially higher than that of the JFET-based ADA4000 (5 pA). This can introduce considerable error in high-impedance or precision sensing applications. Second, its input offset voltage (1 mV) is an order of magnitude greater than that of the original part (200 µV), degrading DC accuracy. Third, the slew rate (13 V/µs) and gain-bandwidth product (4 MHz) are slightly lower, which may affect high-speed signal response. Although it offers better output current and low-voltage operation capability, its insufficient core precision characteristics limit its use to general-purpose circuits where input errors are not critical.