Hall (magnetic) sensors

InAs and GaAs Hall sensor features

  • Multiple packages available
  • Options for high stability or sensitivity
  • Compatible with Lake Shore 400 Series gaussmeters

Hall effect sensors provide a convenient method for measuring or detecting magnetic fields electronically by providing an output voltage proportional to magnetic flux density. As implied by its name, this device relies on the Hall effect. The Hall effect is the development of a voltage across a sheet of conductor when current is flowing and the conductor is placed in a magnetic field.

A typical Hall effect measurement scheme

Lake Shore offers a range of Hall sensors aimed at various applications. In all cases, these sensors go beyond the application of simple magnetic presence detection, such as those used in encoders, contactless switches, and electronic compasses. Lake Shore sensors are useful for field measurement applications, where field value, direction, and polarity are of interest.



Simplify your field measurements

Lake shore teslameter with a 2Dex plug-and-play Hall sensor
  • Connect sensor directly to a Lake Shore teslameter and read field values directly
  • Superior accuracy with full calibration, temperature, and linearity compensation

Hall sensor selection guide

Lake Shore Hall sensors offer the flexibility to power and read the resulting hall voltage with your own instrumentation.

 InAs—stableInAs—sensitiveGaAs
What makes this work?
Words to impress your boss
Indium arsenide bulk material, doped for high stability Indium arsenide bulk material, doped for high sensitivityGallium arsenide thin film
Temperature range
An advantage of non-silicon-based Hall sensors is the opportunity for use in more extreme temperatures
1.5 K to 375 K
(-271.5 °C to 102 °C)
208 K to 373 K
(-65 °C to 100 °C)
233 K to 402 K
(-40 °C to 125 °C)
Interchangeability
Ability to operate multiple sensors with identical drive and measurement setups
Poor—sensitivity range is large enough to require knowledge of the average sensitivity valuePoor—sensitivity range is large enough to require knowledge of the average sensitivity valuePoor—sensitivity range is large enough to require knowledge of the average sensitivity value
Ruggedness
Ability to survive shock and vibration
PoorPoorGood
Lake Shore instrument compatibility
Gaussmeter/teslameter compatibility for these sensors, allowing for field values to automatically be displayed by the instrument
425 or 475 gaussmeter using HMCBL cable; field conversion accomplished with single sensitivity value only, meaning linearity and temperature compensation is not carried out by the gaussmeter425 or 475 gaussmeter using HMCBL cable; field conversion accomplished with single sensitivity value only, meaning linearity and temperature compensation is not carried out by the gaussmeterNone
Planar Hall effect
Physical property related to Hall element thickness that introduces measurement error when the field is in-plane with the sensor element
Significant—bulk material produces enough of a planar Hall effect that fields with known directions are required for accurate measurementsSignificant—bulk material produces enough of a planar Hall effect that fields with known directions are required for accurate measurementsSome—thin-film elements may exhibit small amounts of planar Hall effect error
Sensitivity at nominal current
Impacts measurement accuracy and resolution—a higher number is better
5.5 to 11 mV/T55 to 125 mV/T110 to 280 mV/T
Sensitivity temperature coefficient
Impacts accuracy during large temperature shifts
50 ppm/°C800 ppm/°C600 ppm/°C
Nominal drive current
The recommended excitation level for these sensors
100 mA100 mA1 mA
Typical input resistance
Useful when selecting the drive circuit
2 Ω2 Ω750 Ω
Typical input resistance temperature coefficient
An additional source of measurement error if using a voltage source (rather than current source) to power the sensor
0.15%/°C0.18%/°C0.2%/°C
Best offset voltage (field equivalent)
An error component that has a bigger impact at small fields
±50 µV (4.5 mT)±75 µV (0.6 mT)±2.8 mV (10 mT)

 

What is a Hall effect sensor?

A Hall sensor (or Hall generator) is for measuring magnetic fields. It works on the principle of the Hall effect, which causes a voltage difference (Hall voltage) to develop across the conductor, proportional to the strength of the magnetic field.