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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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ADL8122ACPZN-R7 датащи(PDF) 26 Page - Analog Devices |
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ADL8122ACPZN-R7 датащи(HTML) 26 Page - Analog Devices |
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26 / 28 page  Data Sheet ADL8122 APPLICATIONS INFORMATION analog.com Rev. 0 | 26 of 28 OVERDRIVE RECOVERY OPTIMIZATION The overdrive recovery performance of the 10 MHz to 10 GHz circuit (see Figure 94) can be improved by adjusting the C1 and L1 values shown in Figure 99. Figure 82 is the overdrive recovery time performance comparison of the baseline ADL8122-EVALZ configuration vs. the optimized ADL8122-EVALZ. The reduced val- ue of the input DC blocking capacitor, C1, has the most impact on the improved overdrive recovery. However, by using a smaller C1 value, the minimum frequency of operation was adjusted from 10 MHz to 350 MHz. For optimum performance, the VDD2 voltage (5 V) must come from a separate supply other than VDD (5 V). The bypass capacitor on VDD2 is incorporated to limit any power supply related noise from entering the device. Figure 98. Gain and Return Loss vs. Frequency for ADL8122-EVALZ Overdrive Recovery Time Optimized Circuit, 10 MHz to 12 GHz, VDD = 5 V, RBIAS = 620 Ω Figure 99. Application Circuit for ADL8122-EVALZ Optimized Overdrive Recovery Time |
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