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bl-he-dh257

New BL-HE-DH257 Hall -effect sensor is a temperature stable, stress-resistant, Low Tolerance of Sensitivity micro-power switch

BL-HE-DH257
The voltage of the Hall sensor changes with the change of the magnetic field strength. The stronger the magnetic field, the higher the voltage. The weaker the magnetic field, the lower the voltage. The voltage value of the Hall switch is very small, usually only a few millivolts, but when amplified by the amplifier in the integrated circuit, the voltage can be amplified enough to output a strong signal. For the Hall integrated circuit to function as a sensor, mechanical methods are required to change the magnetic field intensity. Unipolar low-power Hall switches are usually used in switching, current detection and other applications. They only require one polarity of power supply to work.
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  • Model Number:BL-HE-DH257
  • Place of Origin:Guangdong, China
  • Brand Name:Beelee
  • Supply Voltage(VDD):7V
  • Output Voltage(Vout):7V
  • Output Curent(IOUT):1mA
  • Reverse Voltage(VDD) (VOUT):-0.3V
  • Storage Temperature Rang(Ts):-65 to +150 ℃
  • Maximum Junction Temp:150℃


01.BL-HE-DH257 Hall -effect sensor is a temperature stable, stress-resistant, Low Tolerance of Sensitivity micro-power switch. Superior high-temperature performance is made possible through a dynamic offset cancellation that utilizes chopper-stabilization. This method reduces the offset voltage normally caused by device over molding, temperature dependencies, and thermal stress.
02.BL-HE-DH257 is special made for low operation voltage, 1. 65V, to active the chip which is includes the following on a single silicon chip: voltage regulator, Hall voltage generator, small-signal amplifier, chopper stabilization, Schmitt trigger, CMOS output driver. Advanced CMOS wafer fabrication processing is used to take advantage of low-voltage requirements, component matching, very low input-offset errors, and small component geometries. This device requires the presence of unipolar magnetic fields for operation.
03.The package type is in a Halogen Free version has been verified by third party Lab.


 

























































































(At 4.5v to 24V with 20mA load unless otherwise noted.) 
ParameterConditionMinTypMaxUnits
Supply voltage—3.8—30.0V
Supply current25℃—510mA
Output current——40—mA
Vsat at 20mA25℃——0.4 V
Output leakage———10.0 μA
Rise time25℃—0.21.5 μS
Fall time25℃—0.51.5μS
Operating temperature—-40—150℃
Storage temperature—-40—150℃

 


A:Yes,we can provide the free samples for your testing,please contact us for free and tell us which product you need.


2.Q:Do you accept customization?


A:Yes,customization is acceptable,please contact our sales staffs for consult.


3.Q:Can you provide help for technical issues?


A:Yes,we have more than 15 years of research and development in the electronic switch industry. If you need technical help in the purchase process, please feel free to contact us

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