Which hall sensors I need to count motor rounds or simply check a mechanical position ?
All this sensors are compatible with ARDUINO developing platforms.
Here a list of the best 10 linear Hall sensors
Position Hall sensors Applications
- Motion control
- Linear position encoders
- Incremental off-axis rotary encoders
- Brushless motors
- contactless sensing
- measure the vertical component of a magnetic field
- Seat position and occupant detection
- magnetic fingerprint detection
- Industrial Automation and Robotics
- Home Appliances
- Gamepads, Pedals, Keyboards, Triggers
- Height Leveling, Tilt and Weight Measurement
- Fluid Flow Rate Measurement
- Medical Device
- Absolute Angle Encoding
- High Current Sensing
How an Hall sensor works under magnetic effect
Analog bipolar linear hall effect sensor
Linear Output Hall Sensor
• Superior Temperature Stability: Sensitivity ±10% Over Temperature
• High Sensitivity Options (you have to choose your desired full scale):
– –11 mV/mT (OA)
– –23 mV/mT (PA)
– –45 mV/mT (RA)
– –90 mV/mT (VA)
– +23 mV/mT (CA)
– +45 mV/mT (EA)
• Supports a Wide Voltage Range: 2.5 to 38 V – No External Regulator Required
• Wide Operating Temperature Range: TA = –40 to 125°C (Q, see Figure 17)
• Amplified Output Stage: 2.3-mA Sink, 300 µA Source
• Output Voltage: 0.2 ~ 1.8 V: B = 0 mT, OUT = 1 V
• Fast Power-On: 35 µs
The DRV5053 output stage is capable of up to 300-μA of current source or 2.3-mA sink. For proper operation, ensure that equivalent output load ROUT > 10 kΩ.
The capacitive load directly present on the OUT pin should be less than 10 nF to ensure the internal operational amplifier is stable. If an external RC filter is added to reduce noise, it is acceptable to use a resistor ≥ 200 Ω with a capacitor ≤0.1 µF.
Ratiometric linear hall effect sensor
Ratiometric Linear Hall Effect Magnetic Sensor
• Operates From 3.3-V and 5-V Power Supplies
• Analog Output With VCC / 2 Quiescent Offset
• Magnetic Sensitivity Options (At VCC = 5 V):
– A1: 100 mV/mT, ±21-mT Range
– A2: 50 mV/mT, ±42-mT Range
– A3: 25 mV/mT, ±85-mT Range
– A4: 12.5 mV/mT, ±169-mT Range
• Fast 20-kHz Sensing Bandwidth
• Low-Noise Output With ±1-mA Drive
• Compensation For Magnet Temperature Drift
Ratiometric PWM output hall effect sensor
PWM-Output Linear Hall Effect Magnetic Sensor
• Operates From 3.3-V and 5-V Power Supplies
• 2-kHz Clock Output With 50% Quiescent Duty
• Magnetic Sensitivity Options (At VCC = 5 V):
– A1: 2%D/mT, ±21-mT Range
– A2: 1%D/mT, ±42-mT Range
– A3: 0.5%D/mT, ±84-mT Range
– A4: 0.25%D/mT, ±168-mT Range
• Open-Drain Output With 20-mA Sink Capability
• Compensation for Magnet Temperature Drift
Low cost and small solution for linear analog magnetic sensor
Miniature and subminiature construction: Designed for compact designs with tight space requirements
• Energy efficient: Low current consumption of 6 mA at 5 Vdc
• Easy PC board interface: Single current sourcing output for common electronic circuits
• Circuit design flexibility: Voltage range of 2.7 Vdc to 6.5 Vdc
• Low noise output: Virtually eliminates the need for filtering
• Stable output: Thin film resistors improve accuracy
• Wide range of environments: Temperature range of -40 °C to 100 °C [-40 °F to 212 °F]
• Application flexibility: Responds to either positive or negative Gauss
The device integrates a voltage regulator, Hall sensor with advanced offset cancellation system and an analog output driver, all in a single package.
The Output voltage is proportional to the applied magnetic field and to the chip supply voltage (ratiometric).
Multiple sensitivity codes & magnet compensation options exists.
The Output Offset Level (Quiescent Level) at zero magnetic field equals to 50% of the chip supply voltage.
The MLX90393 is designed for micropower applications, with programmable duty cycles in the range of 0.1% to 100%. Single measurement mode, burst mode and wake-up on change mode.
The MLX90393 magnetic field sensor can be reprogrammed to different modes and with different settings at run-time.
The sensor offers a 16-bit output proportional to the magnetic flux density sensed along the XYZ axes using the Melexis proprietary Triaxis® technology and also offers a temperature output signal.
These digital values are available via I2C and SPI, where the MLX90393 is a slave on the bus.
For certain encoder applications speed is crucial, which is possible by increasing the duty cycle to 100% (i.e. maximum current consumption) and minimizing the conversion time (i.e. higher data rate at the expense of more noise on the signal). Other battery powered applications that only require occasional sensor readout can opt for a different trade-off: reduced duty cycle (lower current consumption) and an average conversion time for reduced noise.
New applications for linear output Hall-effect sensors, such as displacement and angular position, require higher accuracy and smaller package sizes. The Allegro A1308 and A1309 linear Hall-effect sensor ICs have been designed specifically to meet both requirements. These temperature-stable devices are available in both surface-mount and through-hole packages.
The accuracy of each device is enhanced via end-of-line optimization. Each device features nonvolatile memory to optimize device sensitivity and the quiescent voltage output (QVO: output in the absence of a magnetic field) for a given application or circuit. This A1308 and A1309 optimized performance is sustained across the full operating temperature range by programming the temperature coefficient for both sensitivity and QVO at Allegro end-of-line test.
These ratiometric Hall-effect sensor ICs provide a voltage output that is proportional to the applied magnetic field. The quiescent voltage output is adjusted around 50% of the supply voltage.
The features of these linear devices make them ideal for use in automotive and industrial applications requiring high accuracy, and they operate across an extended temperature range, –40°C to 150°C.
TDK Micronas HAL 242x family of linear hall sensors
The new HAL 24xy family offers extended distance measurement, improved robustness and state-of-the-art diagnostic functions for applications under stringent conditions.
All new family members will leverage upon TDK-Micronas long success in Linear Hall-effect sensors, full in-house manufacturing and automotive proven 0 ppm track record. It uses TDK-Micronas’s latest technology node, a new digital architecture as well as further enhanced Hall plates. The sensor provides an improved output linearization by incorporating a flexible compensation function with up to 16 programmable setpoints. In addition, angles up to 180° can be measured even with a simple magnet configuration.
High-precision linear Hall-effect sensor with ratiometric 12-bit analog output (HAL/HAR 242x)
0.25 kHz to 2 kHz (up to 12 bit) PWM output (HAL/HAR 2455)
16 setpoints for various output signal characteristics
High immunity against ESD (8 kV) and EMC
Multiple customer-programmable magnetic characteristics in a non-volatile memory with redundancy and lock function
Programmable temperature compensation for sensitivity and offset
Magnetic field measurements in the range up to 200 mT
Low output voltage drifts over temperature
Open-circuit (ground and supply line break detection), overvoltage and undervoltage detection
Programmable output clamping function
Digital readout of temperature and magnetic field information in calibration mode
Operates from −40 °C up to 170 °C junction temperature
Operates from 4.5 V up to 5.5 V supply voltage in specification
Operates with static magnetic fields and dynamic magnetic fields up to 2 kHz
Overvoltage and reverse-voltage protection at all pins
Short-circuit protected push-pull output
High performance programmable Linear Hall sensor
- Integration of two individual programmable Linear Hall sensor IC’s with PWM open-drain output signal
- 20-bit Digital Signal Processing
- Digital temperature and stress compensation
- 12-bit overall resolution
- Operating automotive temperature range -40°C to 125°C
- Minimal drift of output signal over temperature and lifetime
- Programmable parameters stored in EEPROM with single bit error correction: – PWM output frequency – Magnetic range, sensitivity (gain), offset, and polarity of the output slope – Bandwidth – Clamping levels – Customer temperature compensation coefficients for all common magnets
- Re-programmable until memory lock
- Supply voltage 4.5 – 5.5 V (4.1 – 16 V extended range)
- Configurable magnetic range: ±50 mT, ±100 mT, or ±200 mT
- Reverse-polarity and overvoltage protection for all pins • Output short-circuit protection • On-board diagnostics (overvoltage, EEPROM error)
- Realtime system for linear speed up to 8 m/s at full resolution
- Absolute position within the magnetic period of 4 mm
- 12-bit interpolation w. 4096 increments, resolution better 1 μm
- Automatic signal offset compensation
- Automatic amplitude control for optimum operating point
- Programmable features: interpolation factor, hysteresis, minimum phase distance, zero position and code direction
- Electronic index generation with multi-purpose enable input
- RS422-compatible A/B/Z outputs for encoder quadrature signals with up to 8MHz edge rate
- UVW commutation signals for EC motor applications
- BiSS/SSI interface for high-speed serial data output (BiSS/SSI) and configuration (BiSS)
- Zener-Zap ROM for non-volatile setup and OEM data
- Signal monitoring: loss of signal, excessive frequency
- Single 5 V supply
- Extended temperature range of -40 to +125 °C
Asahi Kasei EQ-431L Factory Programmed Linear Hall Ics
EQ-431L is composed of an InAs Quantum Well Hall Element and a signal processing IC chip in a package
Analog output which proportional to the magnetic field strength and pole.
■ Magnetic sensitivity 65mV/mT(typ.)
■ Supply voltage from 3.0V to 5.5V at single power supply
■ Operating temperature range -40℃～100℃
■ Ratio-metric analog output
■ 3pin surface mount plastic package
■ Quick response 4 μs
Rated output current : 1 mA;
Rated consumption current : 12 mA;
Ahest Linear Hall Sensor AH3507
Rated working voltage 4.5 V ~ 6 V;
Operating temperature range: -40℃ ~ 125℃;
Rail to Rail voltage output, Rated output current : 6 mA;
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