Original Part
Alternative Part
1. LM358DGKR Substitution Conclusion
The LM358DGKR can generally serve as a replacement for the LM358DMR2G, but key parameter differences may affect performance in specific applications. Notably, its gain-bandwidth product is reduced from 1 MHz to 800 kHz, which limits bandwidth in high-frequency signal processing and may degrade frequency response. The input offset voltage increases from 2 mV to 3 mV, introducing slightly higher DC error and impacting the accuracy of precision amplification circuits. Input bias current decreases from 45 nA to 20 nA, improving input impedance and making it more suitable for high-impedance sensor interfaces. Supply current per channel drops from 800 µA to 500 µA, helping to reduce overall system power consumption. The maximum supply voltage range is narrowed from 32 V to 30 V, which remains acceptable for most industrial applications, though caution is advised under extreme operating conditions. Both devices are offered in 8-pin MSOP-type packages with pin-to-pin compatibility, allowing for direct substitution.
2. LM2904ST Substitution Conclusion
The LM2904ST can replace the LM358DMR2G in many general-purpose applications, though with some performance trade-offs. Key differences include a reduction in gain-bandwidth product from 1 MHz to 700 kHz, which may limit signal integrity in high-frequency circuits. Output current decreases from 40 mA to 30 mA, reducing its ability to drive capacitive or low-impedance loads. However, the slew rate improves to 0.6 V/µs (compared to a typical LM358 range of 0.3–0.5 V/µs), which enhances transient response and signal tracking speed. Input bias current drops from 45 nA to 20 nA, increasing input impedance and reducing loading on the signal source. Supply current changes from 800 µA per channel to a likely total of 700 µA, offering lower power consumption. The maximum supply voltage range is reduced from 32 V to 30 V, which generally does not affect standard designs. The package is similar and pin-compatible, allowing for direct substitution.
Analysis ID: D8B4-3AC1000
Based on part parameters and for reference only. Not to be used for procurement or production.
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