TDK-Micronas HAC® & HAR® 3930 Stray-Field 3D Position Sensors
TDK-Micronas HAC® 3930 and HAR® 3930 Stray-Field Robust 3D Position Sensors feature PWM or SENT output and measure 360° angular range, linear movements, and the 3D position information of a magnet. Based on Hall technology, these modules measure vertical and horizontal magnetic-field components and suppress external magnetic stray fields using an array of Hall plates. The HAC 3930 and HAR 3930 devices address the need for stray-field robust 3D position sensing (linear and angular) and ISO 26262-compliant development. Both products are defined as SEooC ASIL B ready according to ISO 26262, and the HAR 3930 can be integrated into automotive safety-related systems up to ASIL D.
The TDK-Micronas HAC 3930 sensor features integrated capacitors, meeting electrostatic discharge (ESD) and electromagnetic compatibility (EMC) requirements while eliminating the need for a PCB, reducing total system size and cost. The HAC 3930 comes in a small three-pin leaded transistor TO92UF package.
The HAR 3930 provides full redundancy thanks to two independent dies stacked in a single package, each electrically connected to the pins of one package side. This stacked-die architecture makes sure both dies occupy the same magnetic-field position to generate synchronous measurement signals. The HAR 3930 also offers two switch outputs (configurable high-/low-side switch). The HAR 3930 is offered in a 16-pin SSOP16 SMD package.
Features
- Accurate angular measurement up to 360° and linear position detection
- 3D position detection supporting transmission of 2 angles out of BX, BY, BZ
- Compensation of magnetic stray fields (rotary or linear position detection)
- SEooC ASIL B ready according to ISO 26262 to support functional safety applications
- Configurable output slew rates to reduce EMC emission
- SENT according to SAEJ2716 rev. 4 (APR2016), supporting 3 frame formats
- Programming via sensor output pins, no additional programming pin required
- Various configurable signal processing parameters, including output gain and offset, reference position, and temperature-dependent offset
- Modulo function (90°/120°/180°) for chassis-position applications
- Programmable arbitrary output characteristic with 17 variable or 33 fixed setpoints
- Programmable characteristics in non-volatile memory (EEPROM) with redundancy and lock function
- Read access on non-volatile memory after customer lock
- Onboard diagnostics of different functional blocks of the sensor
- HAC 3930
- User-configurable PWM or SENT output (push-pull and open-drain output)
- EMC and ESD robust package design
- Small 3-pin leaded transistor TO92UF package
- HAR 3930
- User-configurable PWM or SENT output for each die (push-pull output and open-drain output)
- 2 additional switch outputs
- User-configurable switching levels
- 16-pin SSOP16 SMD package
Applications
- HAC 3930
- Chassis position
- Turbocharger
- Valve position (throttle valves)
- Exhaust gas recirculation (EGR)
- Shift position
- Liquid-level measurements
- Non-contact potentiometer
- Transmission position detection
- Clutch position
- Brake pedal position / brake stroke sensors
- HAR 3930
- Throttle valve position
- Shift position
- Steering angle
- Non-contact potentiometer
- Clutch position
- Transmission position detection
- Brake pedal position / brake stroke sensors
- Accelerator pedal position
Specifications
- 3V to 18V supply voltage range
- 0.1kHz to 2kHz pulse width modulation (PWM)
- ±10mT to ±130mT recommended magnetic-field amplitude range
- Up to 8ksps sampling frequency
- -40°C to +170°C junction temperature range (+160°C maximum ambient temperature)
Related Sensors
TDK HAR 3920-2100 Dual-Die Position Sensor
Offers robust stray-field compensation capabilities and ratiometric analog and switch outputs.