Original Part
Alternative Part
1. LM358ADR2G Substitution Conclusion
The LM358ADR2G can serve as a replacement for the LM2904WHDT in most general-purpose applications. Their key parameters are highly similar: the supply voltage range (3–32V vs. 3–30V), output current (40mA), and package (8-SOIC) are fully compatible. The primary differences lie in the LM358ADR2G’s higher input bias current (45nA vs. 20nA), which may introduce slightly greater input error when used with high-impedance signal sources or in high-precision integrator circuits. Its lower gain-bandwidth product (1MHz vs. 1.1MHz) and unspecified slew rate also suggest somewhat weaker performance in handling high-frequency or fast-transient signals. However, in non-demanding applications such as general DC amplification, low-frequency sensor conditioning, or logic-level conversion, these differences are generally acceptable, and the LM358ADR2G offers a slightly higher supply voltage ceiling (32V).
2. LM258DRG4 Substitution Conclusion
The LM258DRG4 can be used as a limited substitute for the LM2904WHDT, with close attention to performance degradation. Its bandwidth (700kHz vs. 1.1MHz) and slew rate (0.3V/µs vs. 0.6V/µs) are notably lower, reducing signal processing speed and frequency response capability. This may make it unsuitable for mid-range audio or applications requiring fast step response. The slightly higher input offset voltage (3mV vs. 2mV) could affect DC accuracy, but its input bias current (20nA) matches the original part, which is beneficial for high-impedance circuits. An advantage is its lower quiescent current (500µA vs. 700µA), making it preferable for battery-powered systems. Substitution is feasible if the application is not sensitive to bandwidth and slew rate, and low power consumption is prioritized.
Analysis ID: 6F20-7A96000
Based on part parameters and for reference only. Not to be used for procurement or production.
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