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Hall IC Characteristics Evaluation Service
Operating at high speed and at low noise, Hall ICs (Magnetic Proximity Sensors) are efficient low-cost devices for use in harsh environments. They are expected to play an important role in the automotive market, etc., but can entail serious problems as a result of a single failure or malfunction of this small Hall IC. In order to prevent such problems and to meet requirements in terms of product quality & reliability improvement, OKI Engineering performs quantitative evaluations of Hall ICs by means of measuring magnetic flux density using a combination of gauss meters.
Hall IC Measurement Example (Sample, Jig and used Equipment)
- Test Sample
- Hall IC made in Japan (Vcc = 3.6V to 16V)
- Measurement Items
- Operating magnetic flux density (DC measurement is generally practicable as well)
- Evaluation Jig
- Our Company's dedicated Hall IC jig
- Used Equipment
- Gauss meter, test magnet, oscilloscope, multimeter
Extraction of Electrical Characteristics, Ta = 25°C
| Item | Symbol | Min | Nominal | Max |
|---|---|---|---|---|
| Operating magnetic flux density | B-LH | 10mT | - | - |
| B-HL | - | - | 60mT |
Example of Measuring a Hall IC Operating Magnetic Flux Density (Measurement Results)
Table of Hall IC Operating Magnetic Flux Density Measurement Results, Ta = 25°C
Example of Hall IC Hysteresis Measurement
- ※ Power supply to the Hall IC: 12V
- ※ Hall IC output voltage: measured with a multimeter
- ※ Evaluation circuit configured to the specification for the LED to light up at "L" output voltage when the operating Hall IC responds to magnetic force.
Example of Hall IC Waveform Measurement with an Oscilloscope
- Hall IC output waveform #1
(at rise stage: Hall IC turns OFF → ON)
- Hall IC output waveform #2
(at fall stage: Hall IC turns ON → OFF)
