1. LM2902QDRQ1 Substitution Conclusion Direct substitution is not recommended. This device may only be considered for undemanding, non-precision circuits where input error and power consumption are of minimal concern. There is a generational performance gap between the LM2902QDRQ1 and the original LT1465. Key parameters show significant degradation: input bias current is 40,000 times higher (20 nA vs. 0.5 pA), input offset voltage is approximately 5 times worse (3 mV vs. 600 µV), and the quiescent current per channel is nearly 10 times greater (1.4 mA vs. 145 µA). Substituting with this part will severely degrade performance in designs relying on high input impedance and low input error, such as photodetection circuits, high-impedance sensor interfaces, and integrators. This will lead to substantially increased input error and a significant rise in system power consumption. While it offers a slightly higher gain-bandwidth product and carries automotive-grade qualification, these benefits do not compensate for the fundamental shortcomings in its input stage performance.