Moteur de recherche de fiches techniques de composants électroniques |
|
AD5100YRQZ Fiches technique(PDF) 11 Page - Analog Devices |
|
AD5100YRQZ Fiches technique(HTML) 11 Page - Analog Devices |
11 / 32 page Preliminary Technical Data AD5100 Rev. PrJ | Page 11 of 32 MR 0 – 5 V √ Highest Prority on Leave Floating Other Inputs Monitoring Inputs V1MON V1MON is a high-voltage monitoring input that controls the SHDN and RESET functions of the external devices. In addition, it also provides a shutdown warning to the system. V1MON monitors inputs from 6V to 30V. It has a 16-level programmable over-voltage, under-voltage (OV,UV) shutdown threshold with an 8-step 0.05ms-200ms shutdown hold time and 0.05ms-1200ms shutdown delay. The shutdown hold time means that the shutdown of the external device is held until the programmed-time is reached. On the other hand, the shutdown delay means that shuting down the external device is delayed until the programmed-time is reached. The OV threshold chosen must be greater than the UV threshold. When the shutdown is triggered either because the input has reached OV or UV threshold, such fault condition will be temporarily recorded in the Fault Detection Register. The SHDNWARN output will transition low for signaling before shutdown occurs. The occurance of Shutdown is depending on how long the shutdown programmed-delay is set relative to the SHDNWARN propagation delay, this feature attempts to allow the system to finish any critical house keeping tasks before shuting down the external device. The V1MON, shutdown, and shutdown warning timing diagrams are shown in Figure 5. The ranges of OV and UV Thresholds are shown in Table 5a and the programming codes of the selected-thresholds are found in Table 5b. The defaulted OV threshold is 18.00V and UV threshold is 8.43V. Simarily, the ranges of shutdown hold and delay times are shown in Table 6a and the programming codes of the selected-timings are found in Table 6b. The defaulted shutdown hold time is 200ms delay time is 1200ms. The voltage at V1MON provides the power for the AD5100 but valid signal at V2MON must be present before the internal VREG starts operation. Details will be explained in the power section. * = Programmable V2MON V 2MON_ON * t GLITCH t 2SD_DELAY * V 2MON_OFF * t 2SD_HOLD * t 2SD_HOLD * t 1SD_DELAY * t 1SD_HOLD * t 1SD_DELAY * V 1MON V 1MON_OV * V 1MON_UV * t GLITCH t 1SD_HOLD * SHDN t 2SD_DELAY * SHDNWARN t FD_DELAY t FD_DELAY t FD_DELAY t FD_DELAY t MIN # #: The duration of the t MIN must be shorter than tVREG_Off_Delay or else the AD5100 will be powered off * = Programmable V2MON V 2MON_ON * t GLITCH t 2SD_DELAY * V 2MON_OFF * t 2SD_HOLD * t 2SD_HOLD * t 1SD_DELAY * t 1SD_HOLD * t 1SD_DELAY * V 1MON V 1MON_OV * V 1MON_UV * t GLITCH t 1SD_HOLD * SHDN t 2SD_DELAY * SHDNWARN t FD_DELAY t FD_DELAY t FD_DELAY t FD_DELAY t MIN # #: The duration of the t MIN must be shorter than tVREG_Off_Delay or else the AD5100 will be powered off Figure 5. V1MON and V2MON Shutdown Timing Diagrams (Note RESET follows SHDN ). The V1MON pin is monitored by two comparators, one for over-voltage, and one for under-voltage detection. Both are designed with 1.5% hysteresis. When the V1MON n input goes above the programmed OV threshold, the comparator will become active immediately, indicating an OV condition has occurred. Due to hysteresis, the V1MON input must be brought below the programmed OV threshold by 1.5% before the comparator will be in-active, indicating the OV condition has gone away, see Figure 6. |
Numéro de pièce similaire - AD5100YRQZ |
|
Description similaire - AD5100YRQZ |
|
|
Lien URL |
Politique de confidentialité |
ALLDATASHEET.FR |
ALLDATASHEET vous a-t-il été utile ? [ DONATE ] |
À propos de Alldatasheet | Publicité | Contactez-nous | Politique de confidentialité | Echange de liens | Fabricants All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |