Original Part
Standard (General Purpose) Amplifier 2 Circuit Push-Pull 8-TSSOP
Alternative Part
1. RC4558PW Substitution Conclusion
The RC4558PW is not a direct drop-in replacement for the original part UPC358GR-9LG-E1-A due to significant differences in key parameters. Its minimum supply voltage of 10V (vs. 3V for the original) restricts use in low-voltage applications. The output current capability is only 10mA (compared to 40mA), which may be insufficient for driving heavier loads. Quiescent current is notably higher at 2.5mA per channel (original: 350µA), leading to increased power dissipation. Input bias current is 150nA (original: 14nA), which could degrade accuracy in high-impedance signal paths. Furthermore, its output stage is differential (original: push-pull), requiring circuit compatibility verification. Substituting in low-voltage, high-drive, or low-power designs may result in performance degradation or circuit failure.
2. AS358GTR-E1 Substitution Conclusion
The AS358GTR-E1 demonstrates high potential as a direct substitute, as its core parameters closely align with the original part. The supply voltage range (3V to 36V) is compatible and even wider. Output current capability matches at 40mA. Input bias current (20nA) and input offset voltage (2mV) are of the same order of magnitude. A minor deviation is the slightly higher quiescent current (700µA vs. 350µA), which may cause a modest increase in power consumption but is generally acceptable in most applications. The output structure is not explicitly stated in the summary; the datasheet must be checked to confirm whether it is push-pull. Overall, this device can deliver comparable performance in general-purpose amplification circuits, though unlisted parameters such as slew rate should be verified to ensure suitability for higher-frequency applications.
Analysis ID: D898-DA79000
Based on part parameters and for reference only. Not to be used for procurement or production.
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