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Original Part

Current Feedback Amplifier 1 Circuit SOT-23-5

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Alternative Part

Current Feedback Amplifier 1 Circuit SOT-23-5

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Current Feedback Amplifier 1 Circuit SOT-23-5

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1. EL5161IWZ-T7A Substitution Conclusion The EL5161IWZ-T7A is not a suitable direct replacement for the AD8009JRTZ-REEL7, as its key performance parameters exhibit significant gaps. The most critical issues are its bandwidth (200 MHz vs. 845 MHz) and slew rate (1700 V/µs vs. 5500 V/µs), which are substantially lower than those of the original part. Consequently, its performance in high-speed signal processing, pulse response, and high-frequency gain flatness will be severely inadequate for the target applications of the original part, such as video, high-speed data acquisition, or communications. While it offers advantages in ultra-low-power designs due to its significantly lower quiescent current (750µA vs. 16mA), and features slightly better input bias current and offset voltage, these benefits cannot compensate for the critical shortfall in speed performance. Furthermore, its maximum supply voltage (10 V vs. 12 V) and output drive current (140 mA vs. 175 mA) are also more limited.
2. LMH6702MFX/NOPB Substitution Conclusion The LMH6702MFX/NOPB shows potential as a replacement for the AD8009JRTZ-REEL7 in terms of bandwidth performance, but its use is subject to strict application constraints. Its -3dB bandwidth (1.7 GHz) is notably higher than that of the original part (845 MHz), and its slew rate (3100 V/µs), while lower than the original, remains exceptionally high. It may even offer superior performance in ultra-high-frequency and small-signal processing. The primary limitations are its narrower supply voltage range (10-12 V vs. 5-12 V) and a minimum operating voltage as high as 10V. This precludes its use in any standard system operating from a single 5V supply or ±5V (total 10V) or lower. Additionally, its output drive current (80 mA) is only 46% of the original part's, resulting in significantly weaker capability to drive low-impedance loads such as cables or ADCs. Substitution can only be considered for ultra-high-bandwidth applications where the supply voltage is ±5V or a single supply above 10V, and where drive current requirements are not demanding.
Analysis ID: EDE5-7C5E000
Based on part parameters and for reference only. Not to be used for procurement or production.
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