SE01 - Hall Effect
This xCHIP is equipped to sense and record the Hall voltage caused by the Hall Effect. The A1454 linear Hall effect sensor IC provides a 12-bit digital output word that is proportional to the strength of the magnetic field that is present. Its quiescent output value is at mid-scale, and it comes in 2 different factory programmed sensitivity ranges: 2LSB/G & 4LSB/G. The sensitivity temperature coefficient is also factory programmed to support either Neodymium or Ferrite magnets. The A1454 incorporates an I2C interface for easy integration into a wide variety of applications. The I2C address can either be set by external resistors or programmed via EEPROM, to support up to 127 unique I2C addresses, allowing for multiple ICs on the same bus. It also includes 16 bytes of user programmable EEPROM. The A1454 I2C interface provides a user-controlled sleep input command that puts the device in micro-power mode, which reduces the current consumption of the A1454. This low power feature makes the A1454 perfect for portable, battery-operated applications.
The BiCMOS monolithic process allows the integration of both high precision analog and high-density digital circuitry. The A1454 integrates the Hall element, a 12-bit ADC, gain & offset compensation circuitry, EEPROM memory and the I2C interface on a single monolithic IC that is packaged in a space saving surface mount package.
- Based on the A1454 Linear Hall Effect Sensor
- EEPROM Stores Factory Programmed Settings and up to 16 Bytes of User Information (programmable through the I2C).
- 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).
- Temperature-stable sensitivity for NdFeB and ferrite magnets.
- Sensitivity options: 2 LSB/G (for fields up to ±1000 G) and 4 LSB/G (±500 G).