Automotive, high-precision, linear 3D Hall-effect sensor with I²C interface

The TMAG5173-Q1 is a

low-power linear 3D Hall-effect sensor designed for a wide range of automotive and

industrial applications. This device integrates three independent Hall-effect

sensors in the X, Y, and Z axes. A precision analog signal-chain supports

applications requiring narrow design tolerance. Integrated safety mechanisms enable

robust functional safe system design. The device can be used in 1D linear

measurements, 2D angle measurements, 3D joystick measurements, magnetic threshold

cross detection, and various user configurable switch function applications. The

digital filter option allows up to 32 times sensor data integration for improved

noise performance. The I2C interface, while supporting multiple operating

VCC ranges, ensures seamless data communication with

microcontrollers. The device has an integrated temperature sensor available for

multiple system functions, such as thermal budget check or temperature compensation

calculation for a given magnetic field.

The TMAG5173-Q1 supports multiple

operating modes (including wake-up and sleep mode) to optimize the system power

consumptions and operating speed. During the active mode the device performs

continuous conversions autonomously. During standby mode the

INT pin or I2C communication can be used by a

microcontroller to trigger a new conversion. During the sleep mode the device

consumes ultra-low power and retains the configuration register values.

An integrated

angle calculation engine (CORDIC) provides full 360° angular position information

for both on-axis and off-axis topologies with an angle resolution of 1/16 degree.

The angle calculation is performed for any of the X-Y, Y-Z, or Z-X planes based off

the user configuration register selection. The device features magnetic gain and

offset correction to mitigate the impact of system mechanical error sources.

The TMAG5173-Q1 can be

configured through the user registers to enable any combination of magnetic axes and

temperature channel conversions. The device supports several I2C read

frames along with cyclic redundancy check and diagnostic status communications.

The TMAG5173-Q1 is

offered in four different factory-programmed I2C addresses. The device

also supports additional I2C addresses through the modification of a

user-configurable I2C address register. Each orderable part can be

configured to select one of two magnetic field ranges that suits the magnet strength

and component placement during system calibration.

The device performs consistently

across a wide ambient temperature range of –40°C to +125°C.