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SI52111-A1 датащи(PDF) 7 Page - Silicon Laboratories |
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SI52111-A1 датащи(HTML) 7 Page - Silicon Laboratories |
7 / 20 page Si52111 -A1/A2 Rev 1.2 7 2. Crystal Recommendations If using a crystal input, the device requires a parallel resonance crystal. 2.1. Crystal Loading Crystal loading is critical in achieving low ppm performance. To realize low ppm performance, use the total capacitance the crystal sees to calculate the appropriate capacitive loading (CL). Figure 1 shows a typical crystal configuration using two trim capacitors. It is important that the trim capacitors are in series with the crystal. Figure 1. Crystal Capacitive Clarification Table 6. Crystal Recommendations Frequency (Fund) Cut Loading Load Cap ESR Drive Shunt Cap (max) Motional (max) Tolerance (max) Stability (max) Aging (max) 25 MHz AT Parallel 12–15 pF <50 >150 µW 5 pF 0.016 pF 35 ppm 30 ppm 5 ppm |
Аналогичный номер детали - SI52111-A1 |
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Аналогичное описание - SI52111-A1 |
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