Datasheet > A3240EUA-LC

A3240EUA-LC

更新时间： 2024-02-27 05:14:09

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
10页	187K
描述
Analog Circuit, 1 Func, PSIP3, SIP-3

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A3240EUA-LC 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	SIP	包装说明：	SIP,
针数：	3	Reach Compliance Code：	compliant
HTS代码：	8542.39.00.01	风险等级：	5.87
模拟集成电路 - 其他类型：	ANALOG CIRCUIT	JESD-30 代码：	R-PSIP-T3
JESD-609代码：	e0	长度：	4.105 mm
功能数量：	1	端子数量：	3
最高工作温度：	85 °C	最低工作温度：	-40 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	SIP
封装形状：	RECTANGULAR	封装形式：	IN-LINE
峰值回流温度（摄氏度）：	NOT SPECIFIED	认证状态：	Not Qualified
座面最大高度：	5.84 mm	最大供电电压 (Vsup)：	24 V
最小供电电压 (Vsup)：	4.2 V	标称供电电压 (Vsup)：	12 V
表面贴装：	NO	温度等级：	INDUSTRIAL
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	SINGLE
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	1.52 mm
Base Number Matches：	1

A3240EUA-LC 数据手册

3240

CHOPPER-STABILIZED,

PRECISION

HALL-EFFECT SWITCH

FUNCTIONAL DESCRIPTION

Chopper-Stabilized Technique. The Hall element can be

REG

considered as a resistor array similar to a Wheatstone bridge. A

large portion of the offset is a result of the mismatching of these

resistors. These devices use a proprietary dynamic offset

cancellation technique, with an internal high-frequency clock to

reduce the residual offset voltage of the Hall element that is

normally caused by device overmolding, temperature dependen-

cies, and thermal stress. The chopper-stabilizing technique

cancels the mismatching of the resistor circuit by changing the

direction of the current flowing through the Hall plate using

CMOS switches and Hall voltage measurement taps, while

maintaing the Hall-voltage signal that is induced by the external

magnetic flux. The signal is then captured by a sample-and-

hold circuit and further processed using low-offset bipolar

circuitry. This technique produces devices that have an

extremely stable quiescent Hall output voltage, are immune to

thermal stress, and have precise recoverability after temperature

cycling. This technique will also slightly degrade the device

output repeatability. A relatively high sampling frequency is

used in order that faster signals can be processed.

Dwg. EH-012

—

HALL

VOLTAGE

Dwg. AH-011-2

More detailed descriptions of the circuit operation can be

found in: Technical Paper STP 97-10, Monolithic Magnetic

Hall Sensor Using Dynamic Quadrature Offset Cancellation

and Technical Paper STP 99-1, Chopper-Stabilized Amplifiers

With A Track-and-Hold Signal Demodulator.

Operation. The output of these devices switches low (turns

on) when a magnetic field (south pole) perpendicular to the Hall

sensor exceeds the operate point threshold (B_OP). After turn-on,

the output is capable of sinking 25 mA and the output voltage is

V_OUT(SAT). When the magnetic field is reduced below the

release point (B_RP), the device output goes high (turns off). The

difference in the magnetic operate and release points is the

hysteresis (B_hys) of the device. This built-in hysteresis allows

clean switching of the output even in the presence of external

mechanical vibration and electrical noise.

OUT(SAT)

Applications. It is strongly recommended that an external

bypass capacitor be connected (in close proximity to the Hall

sensor) between the supply and ground of the device to reduce

both external noise and noise generated by the chopper-

stabilization technique.

FLUX DENSITY

Dwg. GH-007-2

SUPPLY

The simplest form of magnet that will operate these devices

is a ring magnet. Other methods of operation, such as linear

magnets, are possible. Extensive applications information on

magnets and Hall-effect sensors is also available in Application

Note 27701, or at

OUTPUT

www.allegromicro.com

0.1 µF

SUPPLY

Dwg. EH-013

www.allegromicro.com

1...4 5 678 9 10

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与A3240EUA-LC相关器件

型号	品牌	描述	获取价格	数据表
A3240EUA-T	ALLEGRO	CHOPPER-STABILIZED, PRECISION HALL-EF FECT SWITCH	获取价格
A3240EUA-TL	ETC	Hall-Effect Switch	获取价格
A3240EUA-TS	ALLEGRO	Analog Circuit, 1 Func, PSSO3, SMT-3	获取价格
A3240LH	ALLEGRO	CHOPPER-STABILIZED, PRECISION HALL-EFFECT SWITCH	获取价格
A3240LLH	ALLEGRO	CHOPPER-STABILIZED, PRECISION HALL-EFFECT SWITCH	获取价格
A3240LLH	SANKEN	Analog Circuit, 1 Func, PDSO3	获取价格

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