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AD5100EVAL датащи(PDF) 14 Page - Analog Devices |
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AD5100EVAL датащи(HTML) 14 Page - Analog Devices |
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14 / 32 page ![]() AD5100 Preliminary Technical Data Rev. PrJ | Page 14 of 32 V 4MON t GLITCH t RS_HOLD* RESET V 4MON t RS_HOLD* t RS_DELAY t RS_DELAY •Programmable Most Applications using V 4OUT require disabling of V4MON triggered reset V 4OUT V 4MON t GLITCH t RS_HOLD* RESET V 4MON t RS_HOLD* t RS_DELAY t RS_DELAY •Programmable Most Applications using V 4OUT require disabling of V4MON triggered reset V 4OUT Figure 10. V4MON , RESET , and V4OUT Timing Diagrams The V4MON pin is monitored by a comparator to detect an under-voltage condition. It is designed with 6% hysteresis. When the V4MON input drops below the programmed UV threshold, the comparator will become active immediately, indicating a UV condition has occurred. Due to hysteresis, the V4MON input must be brought above the programmed UV threshold by 6% before the comparator will be in-active, indicating the UV condition has gone away, See Figure 11. The V4MON comparator is used to control the V4OUT pin and also (in conjunction with a hold timer) to control the RESET pin. V4MON exhibits typical input resistance of 50KΩ that users should account the loading effect. V 4MON V 4MON_UV Hysteresis UV Comparator In-Active UV Comparator In-Active V 4MON V 4MON_UV Hysteresis UV Comparator In-Active UV Comparator In-Active Figure 11. V4MON Hysteresis. The default V4MON is Disabled. User should refer to Table 5b if they want to program a different setting. |
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