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A1365 Datasheet(PDF) 21 Page - Allegro MicroSystems |
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A1365 Datasheet(HTML) 21 Page - Allegro MicroSystems |
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21 / 32 page 
Low-Noise, High-Precision, Programmable Linear Hall-Effect Sensor IC With High-Bandwidth (120 kHz) Analog Output and Integrated Fault Comparator A1365 21 Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.S.A. 1.508.853.5000; www.allegromicro.com UVLO Enable Counter will start counting. If VCC is higher than VPORL when the counter reaches tUVLOE , the UVLO function will be enabled and the ouput will be pulled near GND [10]. The output will enter a high-impedance state as VCC goes below VPORL [11]. If VCC falls below VPORL before the UVLO Enable Couner reaches tUVLOE, the output will transition directly into a high-impedance state [7']. Detecting Broken Ground Wire If the GND pin is disconnected, node A becoming open (see Figure 12), the VOUT pin will go to a high-impedance state. The output voltage will go to VBRK(HIGH) if a load resistor RL(PULLUP) is connected to VCC or to VBRK(LOW) if a load resistor RL(PULLDWN) is connected to GND. The device will not respond to any applied magnetic field. If the ground wire is reconnected, the A1365 will resume normal operation. A Connecting VOUT to RL(PULLUP) A1365 VCC VCC VCC RL(PULLUP) GND A VOUT A1365 VCC VCC RL(PULLDWN) Connecting VOUT to RL(PULLDWN) VF(PULLUP) RF(PULLUP) FAULT VF(PULLUP) RF(PULLUP) FAULT GND VOUT GND VF(PULLUP) RF(PULLUP) VOUT A1365 VCC V+ CBYPASS CL CF (Optional) FAULT Figure 13: Typical Application Drawing Figure 14: Connections for Detecting Broken Ground Wire |
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