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DRV5012AEDMRT Datasheet(PDF) 7 Page - Texas Instruments |
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DRV5012AEDMRT Datasheet(HTML) 7 Page - Texas Instruments |
7 / 20 page B PCB GND OUT SEL REF Output Control Voltage Regulator Ultra-low-power Oscillator Element Bias Offset Cancellation Temperature Compensation Amp VCC VCC 0.1 F (min) Copyright © 201 7, Texas Instrumen ts Incorpor ate d 7 DRV5012 www.ti.com SLVSDD5 – AUGUST 2017 Product Folder Links: DRV5012 Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated 7 Detailed Description 7.1 Overview The DRV5012 device is a magnetic sensor with a digital output that latches the most recent pole measured. Applying a south magnetic pole near the top of the package causes the output to drive low, a north pole causes the output to drive high, and the absence of a magnetic field causes the output to continue to drive the previous state, whether low or high. The device integrates a Hall effect element, analog signal conditioning, and a low-frequency oscillator that enables ultra-low average power consumption. By operating from a 1.65-V to 5.5-V supply, the device periodically measures magnetic flux density, updates the output, and enters a low-power sleep state. A logic input pin, SEL, sets the sampling frequency to 20 Hz or 2.5 kHz with a tradeoff in power consumption. 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 Magnetic Flux Direction The DRV5012 device is sensitive to the magnetic field component that is perpendicular to the top of the package (as shown in Figure 7). Figure 7. Direction of Sensitivity |
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