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Texas Instruments TMAG5170D-Q1 3D Linear Hall-Effect Sensor

Texas Instruments TMAG5170D-Q1 High-Precision 3D Linear Hall-Effect Sensor is a fully redundant, electrically isolated dual die 3D hall effect sensor with a precision signal chain. The two dies are vertically aligned, providing superior matching output results, with each die being independently configurable, including temperature sensing with temperature drift compensation. Multiple measurement types supported include 1D linear, 2D angle, 3D joystick, and magnetic threshold cross applications.

The Texas Instruments TMAG5170D-Q1 contains on-chip diagnostic features required for high-reliability automotive and industrial applications, including internal and external fault condition monitors. The device supports multiple power options, such as wake-up and sleep mode, allowing designers to optimize system power consumption based on system-level needs.

Integrated angle calculation engine (CORDIC) provides full 360° angular position information for both on-axis and off-axis angle measurements with magnetic offset and gain correction to mitigate the impact of system mechanical error sources. The integrated ALERT function can be used to generate interrupts with either sensor conversion, magnetic threshold cross, or functional safety violation.

Features

3D Hall-effect sensor performance
- ±2.3% (Max) sensitivity mismatch thermal drift X-Y axes
- ±1.2° (Max) X-Y angle thermal drift
- 20kSPS conversion rate for single-axis
Fully isolated dual-die with vertically aligned sensing elements
Functional Safety-Compliant
- Developed for functional safety applications
- Designed to meet ASIL D requirements when implemented with the appropriate system-level control according to the Functional Safety Manual
AEC-Q100 qualified for automotive applications at temperature grade 0 (-40°C to 150°C)
Configurable 10-MHz serial peripheral interface (SPI) with cyclic redundancy check (CRC)

Built-in temperature sensor and compensation for multiple magnet types
Independently selectable X, Y, and Z ranges
- TMAG5170DA1-Q1: ±25, ±50, ±100mT
- TMAG5170DA2-Q1: ±75, ±150, ±300mT
Autonomous wake-up and sleep mode for threshold detection consuming only 1.5µA
Integrated digital filter with up to 32 times sensor data integration
Conversion trigger through the ALERT, CS, or SPI communications
2.3V to 5.5V supply voltage range

Applications

Electric power steering
Shifter systems
Steering column control

Brake systems
Wiper modules
Actuators

Texas Instruments TMAG5170D-Q1 3D Linear Hall-Effect Sensor

Features

Applications

Functional Block Diagram

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