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.