0755-2810 2601
 | KTH5701Chip Overview： KTH5701 is a 3‑axis digital‑output Hall‑effect sensor IC, integrating three independent Hall sensors for the X‑axis, Y‑axis and Z‑axis respectively. Its signal chain adopts high‑precision operational amplifiers, and analog signals are converted into digital outputs via a 16‑bit ADC. The external host can read measurement data through either SPI or I2C interface. In addition, an on‑chip temperature sensor is embedded for magnetic‑field temperature compensation. KTH5701 supports multiple operating modes including continuous‑sensing mode, wake‑up‑sleep mode and single‑shot measurement mode to accommodate diverse application scenarios. The BUTT_OUT pin can realize button‑function detection between the magnet and the chip; it can also be configured as Trigger mode to initiate a single‑shot measurement. Meanwhile, KTH5701 is equipped with the CORDIC algorithm to output planar angles for the XY, XZ and YZ planes. Amplitude‑trim registers are implemented to greatly simplify both on‑axis and off‑axis knob applications. Magnetic‑field threshold detection is available for the selected XY, XZ or YZ plane. A single chip is capable of simultaneous detection for both knob and button use‑cases. Featuring high integration and high application flexibility, this device is widely suitable for a broad range of scenarios. |
Functional Block Diagram：
| Typical Applications: ‑ Agricultural irrigation‑ Knobs & joysticks‑ Linear position detection‑ 3D position and angle detection‑ Non‑contact magnetic‑field measurement ‑ Low‑power magnetic encoders
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‑ 3‑D magnetic‑field output (X‑axis, Y‑axis, Z‑axis)
‑ Angle output via CORDIC algorithm
‑ Typical operating range for X‑Y axes: ±130 mT
‑ Typical operating range for Z‑axis: ±80 mT
‑ Temperature (T) output
‑ Absolute position detection supported
‑ Plane angle output for XY, XZ and YZ planes
‑ High‑precision 16‑bit ADC output
‑ Button‑detection function supported
‑ Selectable SPI / I²C communication interface
‑ Wake‑up and measurement‑trigger modes supported
‑ Supply voltage: 2.8 V ~ 5.5 V
‑ IO supply voltage down to 1.8 V
‑ AQ2 industrial‑grade operating temperature: ‑40 ℃ ~ +105 ℃
‑ AQ3 consumer‑grade operating temperature: ‑40 ℃ ~ +85 ℃
0755-2810 2601 
+86 189 2646 8515 
Sales-net@junmintech.cn
Device Information：
Note 1: When using the angle‑output function of the chip, it is recommended that the magnetic flux densities of the two axes on the corresponding plane are both greater than 20 mT.