Datasheet

ManualsBrandsUnbranded ManualsSensorsHall effect sensor AH3661UA 2.4 - 5.4 Vdc Reading range: -0.007 - +0.007 T Soldering

NANJING AH ELECTRONIC SCIENCE ＆ TECHNOLOGY CO.,LTD

ADD：Room901, BLDG 1, Cheng Kai Mansion,198, HongWu Road, Nanjing, 210002

TEL：86-25-84670370 FAX：86-25-68976999

E-mail：nianrong@ahest.com Web: www.ahest.com

AH3661 is an Omnipolar micro-power high sensitivity Hall effect sensor which designed for

battery-powered handheld digital devices. The sensor chip integrated with voltage regulator, Hall effect voltage

generator, dynamic offset compensated, temperature compensation, wake / sleep controller, differential amplifier,

Schmitt trigger, logic controller, as well as open-drain output driver and other circuit unit. Specially designed

circuit enables the sensor has a full magnetic pole (regardless S pole or N pole) magnetic field excitation function,

excellent symmetry of the positive and negative magnetic switch, and very small average current consumption

characteristics.

◆ Omnipolar switch type Hall effect sensor magnetic and electric transfer characteristic：

When the magnet(regardless S pole or N pole) is closed to sensor（︱B︱≥︱Bop︱），the sensor

outputs low level; When the magnet is far away with the sensor（︱B︱≤︱Brp︱）, the sensor outputs high level.

Stable hysteresis （Bhx =︱Bopx--Brpx︱）enables the sensors stable switch state. The sensors' magnetic and

electric transfer characteristic curve is shown as the figure:

AH3661 Omnipolar Micropower Hall Effect Sensor

◆ Outline

◆ Magnetic and electric transfer characteristic

-B

Brpn

Bops

VoL

Vcc

Bhs

Bopn

Brps

Bhn

Summary of content (9 pages)

PAGE 1
AH3661 Omnipolar Micropower Hall Effect Sensor ◆ Outline AH3661 is an Omnipolar micro-power high sensitivity Hall effect sensor which designed for battery-powered handheld digital devices. The sensor chip integrated with voltage regulator, Hall effect voltage generator, dynamic offset compensated, temperature compensation, wake / sleep controller, differential amplifier, Schmitt trigger, logic controller, as well as open-drain output driver and other circuit unit.
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 Awake/sleep cycle The product chip is with built-in awake/sleep clock control circuit, its awake/sleep cycle time is shown as the figure。 ◆ Ordering Information  Part No. and order mark： AH 3661 M/UA Package form code Part No. code Trademark code  Package Form and outer packing Package code Package form Outer packing M SOT-23-3L（SMD） Reel,3kpcs/reel UA TO-92UA/TO-92S（DIP） Bag,1kpcs/bag, or 0.5kpcs/bag NANJING AH ELECTRONIC SCIENCE ＆ TECHNOLOGY CO.
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◆ Features  Rated working voltage 2.4V ~ 5.5V,   Work under Omnipolar, the excitation field (body static mode, Human-Body Model, regardless of N or S pole, high magnetic HBM); Immune to ESD which is greater than 5kV sensitivity, highly symmetric of positive and negative magnetic switching points;   Products meet the EU RoHS instruction Built-in dynamic offset voltage 2011/65 / EU and REACH regulations compensation circuit, high temperature 1907/2006 / EU requirements.
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◆ Limit Condition Limit Value Parameter a Symbol Unit Min. Max Storage temp. Ts -55 150 ℃ Supply voltage VCC 2.4 7 V Admitting power loss pd — 300 Magnetic strength B Unlimited Unlimited mT Output current IO — 5 mA a mW On the glass fiber epoxy resin that is 50 mm ×50 mm ×1.6 mm ◆ Operating Condition Parameter Value Symbol Unit Supply voltage VCC Min. 2.4 Max. 5.4 V Operating Temp. Ta -40 85 ℃ Output current IO — 5 mA ◆ Electrical characteristic Value Max.
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◆ Magnetic Characteristic Value Parameter Symbol Operating point S pole faces the product mark Magnetic strength N pole faces the product mark S pole faces the product mark Release Point N pole faces the magnetic strength Hysteresis Test condition BOPS BOPN BRPS VCC1 = VCC2 =2.75V IO = 1 mA Min. Typ. Max. — 3.5 7 －7 -3.5 — 1 2.5 — product mark BRPN — -2.
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 Pin Function Function Pin No. Pin Symbol Pin Name When︱B︱≥︱Bop︱ When︱B︱≤︱Brp︱ 1 Vcc Power supply Power Supply（+） 2 GND Ground Power Supply（-） 3 Vo Output Low Level High Level ◆ Typical Application Circuit Vcc RL 1 3 C 3 Vo 2 GND Note： a) C is filter capaciter，C= 0.01μF～0.1μF； b) RLis pull-up resistor，RL=0.5MΩ～1MΩ。 NANJING AH ELECTRONIC SCIENCE ＆ TECHNOLOGY CO.
PAGE 7
Electrical Characteristic  ◆ Typical Characteristic Curve Electrical Characteristic NANJING AH ELECTRONIC SCIENCE ＆ TECHNOLOGY CO.,LTD ADD：Room901, BLDG 1, Cheng Kai Mansion,198, HongWu Road, Nanjing, 210002 TEL：86-25-84670370 FAX：86-25-68976999 E-mail：nianrong@ahest.com Web: www.ahest.
PAGE 8
 Magnetic Characteristic ◆ Package Outline and Pin Identify ◆  SOT-23-3L（M Type）Package Figure（Unit:mm） NANJING AH ELECTRONIC SCIENCE ＆ TECHNOLOGY CO.,LTD ADD：Room901, BLDG 1, Cheng Kai Mansion,198, HongWu Road, Nanjing, 210002 TEL：86-25-84670370 FAX：86-25-68976999 E-mail：nianrong@ahest.com Web: www.ahest.
PAGE 9
 TO-92UA/TO-92S（UA type）Package Figure（Unit:mm） Note: In the package outline figure, Pin 1 is Vcc, Pin 2 is GND, Pin 3 is output   Mark Mark XX or AHXX means abbreviated parts No., the second line XXXX means product lot No. Pin configuration a) M Type: It faces product mark, and two pins are downward, towards the left, clockwise, the pin No. is 1、2、3 in turn. b) UA Type: It faces product mark, and the pins are downward, from left to right, the pin No. is 1、2、3 in turn.