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3V Linear Hall-Effect Sensor with I2C Output and Programmable EEPROM

A1454

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The A1454 provides a digital 12-bit output proportional to the magnetic field strength, with two programmable sensitivity options and an I²C interface for easy system integration. Its micropower sleep mode and EEPROM memory offer additional flexibility.

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Top Features

Packaging

  • 1 mm thin (TSSOP-08) package
  • Two factory programmed sensitivity options: 2 LSB/G (for fields up to ±1000 G) and 4 LSB/G (±500 G)
  • Temperature-stable sensitivity for NdFeB and ferrite magnets
  • I²C interface for easy integration with support for up to 127 unique addresses
  • EEPROM stores factory programmed settings and up to 16 bytes of user information (programmable through the I²C interface)
  • Micro-power sleep mode through I²C command for minimizing power in battery-operated applications
  • Precise recoverability after temperature cycling
  • Wide ambient temperature range: –40°C to 125°C
  • 12-bit ADC with 10-bit ENOB (Effective Number of Bits)

The A1454 integrates the Hall element, a 12-bit ADC, gain and offset compensation circuitry, EEPROM memory and the I²C interface on a single monolithic IC that is packaged in a space saving surface mount package (suffix LE).

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Part Number Specifications and Availability

Documentation and Resources

Documentation

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Soldering Methods for Allegro Products (SMD and Through-Hole)