*功耗（3UA）霍尔开关MH250

品牌:MST 型号:MH250 种类:霍尔 材料:硅 材料物理性质:半导体 材料晶体结构:单晶 制作工艺:集成 输出信号:模拟型 *护等级:*D 线性度:0（%F.S.） 迟滞:0（%F.S.） 重复性:0（%F.S.） 灵敏度:35G 漂移:0 分辨率:0

MH 250
Low Switch Point Drift &High Sensitivity Micropower Hall Effect Switch

MH 250 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.
MH 250 is special made for low operation voltage, 1.7V, to active the chip which is includes the
following on a single silicon chip: voltage regulator, Hall voltage generator, *all-signal amplifier,
chopper stabilization, Schmitt trigger, and a short circuit protected open-drain output. Advanced CMOS
wafer fabrication processing is used to take advantage of low-voltage requirements, component matching,
very low input-offset errors, and *all component geometries. This device requires the presence of
omni-polar magnetic fields for operation.
MH 250 is rated for operation between the ambient temperatures –40°C and +85°C for the E
temperature range. The four package styles available provide magnetically optimized solutions for most
applications. Package t*es SO is an SOT-23(1.1 mm nominal height), ST is an TSOT-23(0.8 mm nominal
height),SQ is an QFN2020-3(0.55 mm nominal height), a miniature low-profile surface-mount package,
while package UA is a three-lead ultra mini SIP for through-hole mounting.
The package t*e is in a Green version has been verified by third party Lab.
Features and Benefits
? CMOS Hall IC Technology
? MST patented RF noise protection
? 1.7 to 3.5V for battery-powered applications
? Omni polar, output switches with absolute value of North or South pole from magnet
? Operation down to 1.7V, Micro power consumption
? High Sensitivity for direct reed switch replacement applications
? Multi Small Size option
? Low sensitivity drift in crossing of Temp. range
? Ultra Low power consumption at 3uA (Avg)
? Green chip is qualified by third party lab.
? High *D Protection, HBM> +/- 4KV( min )
Applications
? Solid state switch
? Handheld Wireless Handset Awake Switch ( Flip Cell/PHS Phone/Note Book/Flip Video Set)
? Lid close sensor for battery powered devices
? Magnet proximity sensor for reed switch replacement in low duty cycle applications
? Water Meter
? Floating Meter
? PDVD
? *