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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AD5100EVAL датащи(PDF) 10 Page - Analog Devices |
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AD5100EVAL датащи(HTML) 10 Page - Analog Devices |
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10 / 32 page  AD5100 Preliminary Technical Data Rev. PrJ | Page 10 of 32 THEORY OF OPERATION The AD5100 is a Programmable System Management IC that has four channels of monitoring inputs. Two inputs have high voltage (30V) capability. For example if the AD5100 is used in the automotive application, the V1MON (Monitoring Input 1) should be the battery and the V2MON should either be the ignition switch or the pseudo CAN bus wake up signal input. Two other inputs, V3MON and V4MON, are low voltage for 0.9V, 1.8V, 2.5V, 3.3V, or 5V monitoring. The two high voltage inputs control the shutdown signal, SHDN , while the two low voltage inputs control the reset signal, RESET . The SHDN and RESET are both disabling functions for the external devices. The differences are output levels and driving capabilities that will be described later. In some cases the SHDN and RESET may be used interchangeably. The WDI (Watchdog) and MR (Manual Reset) inputs also control RESET output for external digital processor. Figure 4 shows the general flow chart and Table 7 summarizes the AD5100 functions and features. * See Table 9 RESET Configuration Register: If [0] = 0, then SHDN =0 and RESET = 0 If [0] = 1, then SHDN =0 and RESET = 1 V 1MON>UV yes No SHDN=0* V 1MON<OV yes SHDN=0* V 2MON>ON yes No SHDN=0 V 2MON>OFF yes SHDN=0 No V 3MON> Threshold yes No RESET=0 V 4MON> Threshold yes RESET=0 Valid WDI yes No RESET=0 MR=1 yes RESET=0 No No No V 2MON Level Sensitive Selected yes Using V 4OUT for PWM yes No V 4MON> Threshold yes V 4OUT=0 No V 4OUT=1 Standard WDI Selected yes No (Advance WDI Selected) Continue Monitoring Valid WDI No RESET=0 SHDN=0 yes No (V 2MON Rising Edge Sensitive Selected) Floating WDI Disabled yes No Floating WDI No RESET=0 yes V 4MON Disabled yes No Default Paths SHDN=1 * See Table 9 RESET Configuration Register: If [0] = 0, then SHDN =0 and RESET = 0 If [0] = 1, then SHDN =0 and RESET = 1 V 1MON>UV yes No SHDN=0* V 1MON<OV yes SHDN=0* V 2MON>ON yes No SHDN=0 V 2MON>OFF yes SHDN=0 No V 3MON> Threshold yes No RESET=0 V 4MON> Threshold yes RESET=0 Valid WDI yes No RESET=0 MR=1 yes RESET=0 No No No V 2MON Level Sensitive Selected yes Using V 4OUT for PWM yes No V 4MON> Threshold yes V 4OUT=0 No V 4OUT=1 Standard WDI Selected yes No (Advance WDI Selected) Continue Monitoring Valid WDI No RESET=0 SHDN=0 yes No (V 2MON Rising Edge Sensitive Selected) Floating WDI Disabled yes No Floating WDI No RESET=0 yes V 4MON Disabled yes No Default Paths SHDN=1 Figure 4. General Flow Chart Table 7. AD5100 Functions and Features Input Monitoring Range Shutdown Control Reset Cont rol Fault Dete ction Functions and Features If Not Used V1MON 6 – 30 V √ √ √ Over/Under Voltage Does not apply V2MON 3 – 30 V √ √ √ On/Off Voltage Tie to V1MON, Min Input CAN Bus Wake Up V3MON 2.5 – 5.0 V √ √ Connect to VOTP and Threshold to Minimum V4MON 0.9 – 3.3 V √ √ Additional Output Select Disable in Threshold WDI 0 – 5 V √ √ Standard, Advance, or Leave Floating Watchdog Selectable |
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