Original Part
Alternative Part
1. AD8613AKSZ-REEL Substitution Conclusion
This part is not a direct substitute for OPA364AIDBVTG4. The key differences lie in the AD8613’s gain-bandwidth product (GBW) of only 400 kHz and slew rate of only 0.1 V/µs, which are significantly lower than the OPA364’s 7 MHz and 5 V/µs. As a result, the AD8613 cannot handle higher-frequency or fast-slewing signals. In applications with demanding dynamic performance—such as sensor signal conditioning or ADC driver stages—this would lead to insufficient bandwidth and signal distortion. Although the AD8613 offers advantages in input bias current (0.2 pA vs. 1 pA) and quiescent current (38 µA vs. 1.1 mA), making it more suitable for ultra-low-power or high-impedance DC applications, the fundamental shortfall in frequency response prevents it from covering the typical use cases of the original part.
2. AD8613AKSZ-REEL7 Substitution Conclusion
The substitution conclusion for this part is identical to that of the AD8613AKSZ-REEL, as the only difference is the packaging format (reel specification); electrical parameters and package are exactly the same. It likewise cannot directly replace OPA364AIDBVTG4. The primary limitation remains the significantly lower gain-bandwidth product (400 kHz) and slew rate (0.1 V/µs), which would severely degrade signal-processing speed and fail to meet the original design’s requirements for mid-to-high frequency or fast transient response. While its low input bias current and microamp-level quiescent current are valuable in DC precision or battery-powered scenarios, the performance gap stems from fundamentally different chip design objectives (low-speed precision vs. general-purpose medium-speed). Therefore, it can only be considered a conditional substitute in very low-frequency or pure DC applications, and is not interchangeable in most cases.
Analysis ID: 1039-FA71000
Based on part parameters and for reference only. Not to be used for procurement or production.
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