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TMAG5170A2QDGKT +BOM

High-precision, linear 3D Hall-effect sensor with SPI bus interface

Manufacturer:

Texas Instruments
Mfr.Part #:

TMAG5170A2QDGKT
Datasheet:

TMAG5170A2QDGKT Datasheet (PDF)
Type:

Linear Hall-Effect Sensor With SPI
Operating Supply Current:

3.4 mA
Maximum Output Current:

2 mA
Operating Point Min/Max:

+/- 75 mT to +/- 300 mT
EDA/CAD Models:

Request Free CAD Models for TMAG5170A2QDGKT

TMAG5170A2QDGKT General Description

The TMAG5170 is a high-precision linear 3D Hall-effect sensor designed for a wide range of industrial and personal electronics applications. The high level of integration offers flexibility and accuracy in a variety of position sensing systems. This device features 3 independent Hall sensors at X, Y, and Z axes.

A precision signal-chain along with an integrated 12-bit ADC enables high accuracy and low drift magnetic field measurements while supporting a sampling of up to 20 ksps. On-chip temperature sensor data is available for system-level drift compensation.

Integrated angle calculation engine (CORDIC) provides full 360° angular position information for both on-axis and off-axis angle measurement topologies. The angle calculation is performed using two user-selected magnetic axes. The device features magnetic gain and offset correction to mitigate the impact of system mechanical error sources.

The TMAG5170 can be configured through the SPI to enable any combination of magnetic axes and temperature measurements. Multiple sensor conversion schemes and SPI read frames help optimize throughput and accuracy. A dedicated ALERT pin can act as a system interrupt during low power wake-up and sleep mode, and can also be used by a microcontroller to trigger a new sensor conversion.

The TMAG5170 offers multiple diagnostics features to detect and report both system and device-level failures. The SPI communication features a user-enabled cyclic redundancy check to enhance the data integrity.

The device is offered in two different orderables to support wide magnetic fields ranges from ±25mT to ±300mT.

The device performs consistently across a wide ambient temperature range of –40°C to +150°C.

Key Features

High-precision linear 3D Hall-effect sensor to optimize position sensing speed and accuracy:
- Linear measurement total error: ±2.6% (maximum at 25°C)
- Sensitivity temperature drift: ±2.8% (maximum)
- 20-Ksps conversion rate for single axis
10-MHz serial peripheral interface (SPI) with cyclic redundancy check (CRC)
Built-in temperature sensor with < ±2°C error
Independently selectable X, Y, and Z magnetic ranges:
- TMAG5170A1: ±25, ±50, ±100 mT
- TMAG5170A2: ±75, ±150, ±300 mT
5-nA (typical) deep sleep mode current
Autonomous wake-up and sleep mode for threshold detection consuming only 1.5 µA
ALERT function to initiate sensor conversion or indicate conversion complete
Integrated diagnostics for fault detection
Integrated angle CORDIC calculation with gain and offset adjustment
2.3-V to 5.5-V supply voltage range
Operating temperature range: –40°C to +150°C

Specifications

Product Category	Board Mount Hall Effect / Magnetic Sensors	Type	Linear Hall-Effect Sensor With SPI
Operating Supply Current	3.4 mA	Maximum Output Current	2 mA
Operating Point Min/Max	+/- 75 mT to +/- 300 mT	Release Point Min/Max (Brp)	-
Operating Supply Voltage	2.3 V to 5.5 V	Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 150 C	Mounting Style	SMD/SMT
Product	Linear Hall Effect Sensors	Product Type	Hall Effect / Magnetic Sensors
Sensitivity	1308 mT	Factory Pack Quantity	250
Subcategory	Sensors	Supply Voltage - Max	5.5 V
Supply Voltage - Min	2.3 V	Termination Style	SMD/SMT