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    CST8191采用低功耗CMOS工藝，設(shè)計(jì)用于低功耗、高性能單極檢測(cè)大廳效應(yīng)應(yīng)用，如蓋開關(guān)、非接觸開關(guān)、固態(tài)開關(guān)、蓋關(guān)閉傳感器等電池操作?；魻柤呻娐芳闪艘粋€(gè)用于磁傳感的片上霍爾電壓發(fā)生器，一個(gè)放大霍爾電壓的比較器，一個(gè)斬波放大器，一個(gè)施密特觸發(fā)器來提供開關(guān)滯后的噪聲抑制，以及一個(gè)互補(bǔ)輸出。

    CST8191在3.3V電源條件下的總功耗通常小于1.8uA。CST1918被設(shè)計(jì)用來應(yīng)對(duì)交替的南極。當(dāng)磁通密度(B)大于操作點(diǎn)（BOP）時(shí)，輸出將打開（低），保持輸出，直到磁通密度(B)低于釋放點(diǎn)（BRP），然后關(guān)閉（高）。

    該芯片可采用SOT23-3L、SSOT23-3L、TSOT23-3L、SOT553、SIP-3L、DFN1006-3L和DFN101010-4L封裝，額定功率超過-40°C至85°C。該包裝符合RoHS標(biāo)準(zhǔn)。

    Using low power CMOS process, the CST8191 is designed for low power, high performance unipolar detection hall-effect application, such as cover switch,contactless switch, solid state switch and lid close sensor etc battery operation. The hall IC integrated an on-chip hall voltage generator for magnetic sensing, a comparator that amplifiers the hall voltage, a Chopper amplifier, a Schmitt trigger to provide switching hysteresis for noise rejection, and a complementary output.

    The total power consumption of CST8191 is typically less than 1.8uA at 3.3V power supply.CST1918 is designed to respond to alternating South pole. When the magnetic flux density (B) is larger than operate point (BOP), the output will be turned on (low),the output is held until the magnetic flux density (B) is lower than release point (BRP), then turn off (high).

    The device is available in SOT23-3L, SSOT23-3L,TSOT23-3L, SOT553, SIP-3L, DFN1006-3L and DFN1010-4L Packages and is rated over the -40°C to 85°C. The package is RoHS compliant.

CST8191 Features/特性:

Input Voltage Range : 1.65V to 5.5V

Micro-power consumption ideal for battery power applications

Unipolar Operation, easy to use as output

Very high sensitivity hall sensor

Low Power CMOS process technology

Chopper stabilization amplifier stage

Magnetic Sensitivity (typical) BOP=±42Gauss, BRP=±25Gauss

Good RF noise immunity

No need pull-up resistor

Small Solution Size

RoHS & Green Compliant

SOT23-3L, SSOT23-3L, TSOT23-3L, SOT553, SIP-3L, DFN1006-3L and DFN1010-4L Packages

-40℃ to +125 ℃ Temperature Range

CST8191 Applications/應(yīng)用:

Cover switch in clam-shell cellular phones

Cover switch in Notebook, PC/PAD

Contact-less switch in consumer products

Solid State Switch

Handheld Wireless Handset Awake Switch

Lid close sensor for battery-powered devise

Magnet proximity sensor for reed switch replacement in low duty cycle applications

DV, DSC, and White Goods

CST8191 Ordering Information：

Part Number	BOP(Gauss)	BRP Gauss)	Package Type	Package Qty	Temperature	Eco Plan
CST8191S2RN	-42	-25	SSOT23-3L	7-in reel 3000pcs/reel	-40～85℃	Green
CST8191STRN	-42	-25	SOT23-3L	7-in reel 3000pcs/reel	-40～85℃	Green
CST8191TWRN	-42	-25	TSOT23-3L	7-in reel 3000pcs/reel	-40～85℃	Green
CST8191WRN	+42	+25	SOT553	7-in reel 3000pcs/reel	-40～85℃	Green
CST8191D6RN	+42	+25	DFN1006-3L	7-in reel 10000pcs/reel	-40～85℃	Green
CST8191D1RN	+42	+25	DFN1010-4L	7-in reel 10000pcs/reel	-40～85℃	Green
CST8191MBN	+42	+25	SIP-3L	1000pcs/Package	-40～85℃	Rohs
CST8191NMBN	-42	-25	SIP-3L	1000pcs/Package	-40～85℃	Rohs

CST8191 Marking & Pin Assignment: