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ANALOG DEVICES MAX9921AUB+

Hall Effect Sensor, µMAX, 10 Pins, 6 V, 18 V

ANALOG DEVICES MAX9921AUB+
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Manufacturer Part No:
MAX9921AUB+
Order Code:
2517282
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Technical Datasheet:
MAX9921AUB+   Datasheet
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Product Overview

The MAX9921AUB+ is a dual, 2-wire hall effect sensor interface with diagnostics in 10 pin µMAX package. It provides a single chip solution to interface two 2-wire hall effect sensor to a low voltage microprocessor (µP). This device supplies and monitors current drawn by two hall-effect sensors, filters the sensed current level and outputs the corresponding logic level. It includes input diagnostics and fault protection. These features allow device to determine fault conditions such as open inputs, inputs shorted to the battery and inputs shorted to ground. If MAX9921 detects any of these conditions at either IN1 or IN2, device shuts off current to corresponding input. It provides an 80µs blanking time following hall sensor power-up or restart. The open drain logic outputs are compatible with logic levels up to 5.5V. It is used in door modules, window lifters, Seat movers, electric sunroofs, powered lift gate controllers, powered running boards and seatbelt buckles.
  • Supply voltage range is 6V to 18V, operating temperature range from -40°C to 125°C
  • Automotive AEC-Q100 grade 1 qualified
  • Output enable input allows multiplexing of outputs from multiple MAX9921s
  • Provides supply current & interfaces to two 2-wire hall sensors
  • Error output with diagnostics of hall inputs and BAT voltage, hall output filtering
  • Protects hall sensors from overvoltage by isolating them from supply transients
  • Hall inputs protected from short to ground, ramps current to hall sensors at 4mA/µs
  • Hall sensor blanking following hall sensor power-up or restart
  • Low power shutdown, controlled with OE and DIAG inputs
  • Operates with ±2V ground shifts between hall sensor and MAX9921

Applications

Sensing & Instrumentation

Warnings

Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

Product Information

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10Pins

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6V

:
18V

:
-40°C

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125°C

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Technical Documents (1)

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Standard lead time for this product is 13 weeks.

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