Linear 3 V Hall-effect position sensor IC with I2C output

Micropower mode is ideal for battery-powered applications

Allegro MicroSystems: The new A1454 from Allegro MicroSystems Europe is a linear 3 V Hall-effect sensor IC that provides a 12-bit digital I2C output that is proportional to the strength of the magnetic field that is present.

The A1454 is targeted at the consumer, industrial and instrumentation markets with end applications to include non-life-critical medical and consumer devices that require linear position sensing. The quiescent output value of the A1454 is set at mid-scale, and the device is available in two different factory-programmed sensitivity ranges: 2 LSB/G and 4 LSB/G. The sensitivity temperature coefficient is also factory programmed to support either neodymium or ferrite magnets.

The A1454 I²C interface allows easy integration into a wide variety of applications. The I²C address can 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 I²C interface also provides a user-controlled sleep input command that puts the device into micro-power mode, reducing 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 analogue and high-density digital circuitry. The A1454 integrates the Hall element, a 12-bit analogue-digital converter, gain and offset compensation circuitry, EEPROM memory, and the I²C interface on a single monolithic IC. It is packaged in a space-saving (1 mm thickness) TSOP-8 surface mount package.

About Allegro
Allegro MicroSystems, LLC is a leader in developing, manufacturing and marketing high-performance semiconductors. Allegro's innovative solutions serve high-growth applications within the automotive market, with additional focus on office automation, industrial, and consumer/communications solutions. Allegro is headquartered in Worcester, Massachusetts (USA) with design, applications, and sales support centers located worldwide. Further information about Allegro can be found at www.allegromicro.com

Allegro MicroSystems Europe, headquartered in Chertsey, United Kingdom, is the European sales and marketing operation, and operates a network of representatives and distributors throughout Europe.  Allegro also has an engineering design centre in Edinburgh in Scotland and an application and marketing centre in Annecy in France.