Original Part
Alternative Part
1. LM258DRG4 Substitution Conclusion
Direct substitution is not recommended, as the LM258DRG4 falls significantly short of the original LT1469IS8-2TRPBF in key performance metrics. Its gain-bandwidth product is only 700 kHz (vs. 200 MHz for the LT1469), slew rate is 0.3 V/µs (vs. 30 V/µs), and input offset voltage is as high as 3 mV (vs. 50 µV). The LM258DRG4 cannot meet the requirements of high-speed, high-precision applications and is only suitable for low-frequency, low-accuracy scenarios such as power supply monitoring or basic signal conditioning. There is a notable gap in dynamic response and error performance compared to the original part.
2. MC33078MDREP Substitution Conclusion
This device can serve as a downgraded substitute in certain applications, but performance trade-offs must be evaluated. The MC33078MDREP offers a gain-bandwidth product of 16 MHz (vs. 200 MHz for the LT1469), a slew rate of 7 V/µs (vs. 30 V/µs), and an input offset voltage of 150 µV (vs. 50 µV). While its bandwidth and slew rate exceed those of general-purpose op-amps, they remain well below the original part, which may affect high-frequency signal handling. Input precision is also somewhat inferior, though its supply range and output current are comparable. It is suitable for mid-frequency, moderate-precision applications such as audio processing or medium-speed data acquisition. Substitution may be considered if system bandwidth and speed requirements are not stringent.
Analysis ID: 68B4-6813000
Based on part parameters and for reference only. Not to be used for procurement or production.
SkyChip © 2026, Email: sales@skychip.com