1 Features

? High-precision linear 3D Hall-effect sensor to

optimize position sensing speed and accuracy:

– Sensitivity room temperature error, X, Y, Z

axes: ±2.5 (maximum)

– Sensitivity mismatch temperature drift X-Y

axes: ±2 (maximum)

– X-Y angle measurement room temperature

error: ±1.1° (maximum)

– X-Y angle measurement temperature drift:

±1.2° (maximum)

– 20 kSPS conversion rate for single axis

? Functional Safety-Compliant:

– Developed for functional safety applications

– Documentation available to aid ISO 26262

system design

– Systematic capability up to ASIL D

– Hardware integrity up to ASIL B or SIL 2

? AEC-Q100 qualified for automotive applications:

– Temperature grade 1: –40°C to 125°C

? Ultra-low power saving mode:

– 8 nA (typical) sleep mode current

? Selectable linear magnetic range at X, Y, or Z axis:

– TMAG5173x1-Q1: ±40 mT, ±80 mT

– TMAG5173x2-Q1: ±133 mT, ±266 mT

? Interrupt signal from user-defined magnetic and

temperature threshold cross

? Configurable unipolar and omnipolar switch

function

? Integrated angle CORDIC calculation with gain

and offset adjustment

? Configurable averaging filter for noise reduction

? I2C interface with cyclic redundancy check (CRC):

– Maximum 1 MHz I2C clock speed

? Conversion trigger by I2C or dedicated INT pin

? Integrated temperature compensation for multiple

magnet types

? Built-in temperature sensor

? 2.3 V to 3.6 V supply range

? I2C and INT pin tolerance: 5.5 V (maximum)

2 Applications

? Steering column control

? Steering wheel control

? Shifter systems

? E-bikes

? Actuators

? Door module

? Power seats

? Magnetic proximity switch

3 Description

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 is suitable for 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 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.