Melexis MLX90378 3D/Joystick Position Sensors
Melexis MLX90378 3D/Joystick Position Sensors are monolithic magnetic position processor ICs designed for 3D motion applications. Melexis MLX90378 magnetic field sensors consist of a TRIAXIS® GEN III Hall magnetic front end, an analog-to-digital signal conditioner, a DSP for advanced signal processing, and a dual output stage driver capable of providing two Pulse Width Modulated (PWM) outputs or a single SENT output with two channels. The SENT frames can be encoded in a variety of formats. Additionally, the SENT protocol allows for external measurements, error codes, and user-defined values. The two PWM signals correspond to the joystick angle.
The MLX90378 is sensitive to the three components of the magnetic flux density applied to the IC (i.e. Bx, By, and Bz). This sensitivity allows the MLX90378 components, with the correct magnetic circuit, to decode the absolute position of any moving magnet enabling the design of non-contacting 3D position sensors that are frequently required for both automotive and industrial applications. Melexis MLX90378 3D/joystick position sensors support a wide variety of automotive position sensing applications such as shifters, transmission sensors, and human-machine interfaces.
Features
- TRIAXIS Hall Technology
- On-chip signal processing for robust absolute position sensing
- Input/Gateway pin for external measurement
- Programmable measurement range
- Programmable linear transfer characteristic (four multi-points per axis)
- Enhanced serial data communication
- Forward/backward and left/right angle outputs
- Magnet push/pull detection
- XYZ output optional via SENT output
- Extra input pin for reading additional signals
- In-application programmable
- Highly flexible and robust position sensor
- SENT or dual PWM output
- EMC capable up to automotive OEM requirements
- SOIC-8 single die package or TSSOP-16 redundant dual-die package
- ASIL-C (SEooC) component
Applications
- Automotive shift Levers
- Industrial joysticks
- Transmission position sensors
Specifications
- -40°C to +160°C ambient temperature range
- 5.5V max. supply voltage
- 10.5mA max. supply current
- 4.05V max. under voltage detection
- 3.4V max. regulated voltage
- -1.5V to 5.0V input voltage range
- 1ms max. absolute watchdog timeout
- 25.2MHz max. main clock frequency
- Two magnetic poles
- Memory
- 32kB ROM
- 1024B RAM
- 256B NVRAM
Functional Block Diagram
Application Modes
Additional Resource
公開: 2019-02-11
| 更新済み: 2023-06-05