3D Hall sensor IC with low power consumption and high precision

The KTH5701 from Conntek offers solutions for industrial and consumer applications in a small package.

KTH5701 is a digital output 3D Hall sensor chip that integrates three independent Hall sensors for the X, Y, and Z axes. The signal chain uses a high precision operational amplifier and a 16-bit ADC to convert the analog signals into digital outputs. The external host can read the measurement data through SPI or I2C modes. Additionally, the chip integrates a temperature sensor for magnetic field temperature compensation.

KTH5701 supports different measurement modes: continuous sensing mode, wake-up sleep mode, and single measurement mode, making it suitable for various application scenarios. The BUTT_OUT pin is used to detect the button function between the magnet and the chip and can also be configured as a trigger mode to trigger a single measurement.

KTH5701 also integrates the CORDIC algorithm to support plane angle output (XY plane, XZ plane, YZ plane). The amplitude adjustment register greatly facilitates common knob applications in both on-axis and off-axis configurations. It supports magnetic field threshold detection for the selected plane (XY plane, XZ plane, YZ plane), allowing the same chip to detect both knob and button scenarios simultaneously.

KTH5701 features high integration and flexible application, making it widely applicable in various scenarios.

Typical Applications

• Knobs & Joysticks
• Linear position detection
• 3D position and angle detection
• Non-contact magnetic field measurement
• Low power magnetic encoders

Product Features

• 3D (X, Y, Z axis) magnetic field output
• CORDIC algorithm angle output1
• XY axis typical operating range: ±130 mT
• Z axis typical operating range: ±80 mT
• Temperature (T) output
• Supports absolute position detection
• XY, XZ, YZ axis plane angle output
• High precision 16-bit ADC output
• Supports button detection function
• Optional SPI or I2C communication interface
• Supports wake-up and measurement trigger modes
• Operating voltage: 2.8 V ∼ 5.5 V
• IO supply voltage as low as 1.8 V
• Operating temperature for industrial applications (AQ2): −40 ◦C ∼ +105 ◦C
• Operating temperature for consumer applications (AQ3): −40 ◦C ∼ +85 ◦C

The Evalkit EVM5701 is available for evaluation.

Downloads & Links

Conntek Product Catalog (PDF)

Contact

If you would like to know more about the KTH5701, please contact:

Guido Gandolfo
Product Line Manager
Motion Control
+49 5424 2340-57
ggandolfo@mev-elektronik.com