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AN4038 数据表(PDF) 13 Page - STMicroelectronics |
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AN4038 数据表(HTML) 13 Page - STMicroelectronics |
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13 / 39 page  AN4038 STM8TL5xxx sensitivity setting Doc ID 022686 Rev 1 13/39 Figure 9. Noise versus target reference To avoid any false proximity detection and to guarantee system stability, the detection threshold value (see Section 3.3: Detection threshold) must be set to filter out noise on the acquisition signal. Figure 10 shows the test for detection distance versus the target reference with the best detection threshold value (see how to select the best threshold in Section 3.3: Detection threshold). This test was performed using sensor #10 (see Figure 2). Figure 10. Detection distance versus target reference with best detection threshold With an optimum detection threshold setup, the detection distance increases slowly when the target reference increases significantly. |
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