XYT1661 Description/概述：

    The XYT1661 Omnipolar Hall effect sensor IC is fabricated from mixed signal CMOS technology. It is comprised of two Hall plates and a CMOS output driver,mainly designed for battery-operation. The total power consumption in normal operation is typically 3.6μW with a 1.8V power source. either north or south poles of sufficient strength will turn the output on. The output will be turned off under no magnetic field. While the magnetic flux density (B) is larger than operating point (BOP), the output will be turned on (low), the output is held until B is lower than release point (BRP), and then turned off.

    The XYT1661 is available in many flexible packaging options, such as SOT23-3L/SIP-3L. Operating temperature range of the XYT1661 is from -40°C to 85°C.

XYT1661 Features/特性：

1.9uA Micro power design

Operation with North or South pole(omnipolar)

CMOS Output

1.65V to 5.5V battery operation

High sensitivity and high stability of the magnetic switching points

High resistance to mechanical stress

Digital output signal

Good RF noise immunity

-40℃to 85℃operating temperature

SOT23-3L/SIP-3L(TO92S) package

XYT1661 Applications/应用：

Smart meter

toys

Cover switch in Notebook PC/PDA

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

XYT1661 Pin Configuration：

Part Number	Package Type	Packing Qty	BOP (Gauss)	BRP(Gauss)	Temperature	Eco Plan	Lead
XYT1661WAD	SOT23-3L	3000pcs/Reel	±30(Typ.)	±20(Typ.)	-40~ +85℃	ROHS	Cu
XYT1661MD	SIP-3L	1000pcs/Bag	±30(Typ.)	±20(Typ.)	-40~ +85℃	ROHS	Cu