2 System Overview
System Specifications
PARAMETER
SPECIFICATION
Operating Voltage
2.3 V–5.5 V (
)
Magnetic Field Input
±100 mT (
)
Output format
0.2 V to Vcc – 0.2 V (
)
SPI up to 10 MHz
Best Angle Accuracy
< 0.1°
2.1 Block Diagram
Motor Supply
Voltage
C2000
LaunchPad™
Interface
Motor Driver
Hall-Effect
Sensor
TIDA-060040
BLDC
Motor
3.3 V
SPI Bus
Figure 2-1. TIDA-060040 Block Diagram
2.2 Highlighted Products
2.2.1 TMAG5170
is a high-precision linear 3D Hall-effect sensor designed for a wide range of industrial
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.
2.2.2 DRV5055A4
is a linear Hall-effect sensor that responds proportionally to magnetic flux density. The device can
be used for accurate position sensing in a wide range of applications. The device operates from 3.3-V or 5-V
power supplies. When no magnetic field is present, the analog output drives half of VCC. The output changes
linearly with the applied magnetic flux density, and five sensitivity options enable maximal output voltage swing
based on the required sensing range. North and south magnetic poles produce unique voltages.
System Overview
4
Absolute Angle Encoder Reference Design With Hall-Effect Sensors for
Precise Motor Position Control
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