MH254 Specifications
扶壁式挡墙
Micropower CMOS Unipolar Hall Effect Switch MH254 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.
MH254 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.
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The package type is in a Halogen Free version has been verified by third party Lab.
Features and Benefits
●CMOS Hall IC Technology
金属氢
●Strong RF noise protection
● 1.65 to 6V for battery-powered applications
●Operation down to 1.65V,Unipolar Hall Switch Micro power consumption
●High Sensitivity for reed switch replacement applications
●Low sensitivity drift in crossing of Temp. range
●Ultra Low power consumption at 5uA (Avg)
●High ESD Protection, HBM > ±4KV( min )
●Totem-pole output
Applications
●Solid state switch
●Handheld Wireless Handset Awake Switch ( Flip Cell/PHS Phone/Note Book/Flip Video Set)
●Magnet proximity sensor for reed switch replacement in low duty cycle applications
●Water Meter
●PDA
●PDVD
●NB
●Pad PC
MH254 Specifications
Micropower CMOS Unipolar Hall Effect Switch北京农大附小
coredrawPart No. Temperature Suffix Package Type
MH254EST E (-40℃ to + 85℃)ST (TSOT-23)
Custom sensitivity selection is available by MST sorting technology
Functional Diagram
Note: Static sensitive device; please observe ESD precautions. Reverse V DD protection is not included. For reverse voltage protection, a 100Ω resistor in series with V DD is recommended.
MH254, HBM > ±4KV which is verified by third party lab.
宽带直流放大器
Note: Exceeding the absolute maximum ratings may cause permanent damage. Exposure to absolute maximum- rated conditions for extended periods may affect device reliability.
Electrical Specifications
DC Operating Parameters：Ta=25℃, V DD=1.8V
C1：10nF
C2：100pF Typical application circuit
Sensor Location, package dimension and marking
MH254 Package
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