A3213ELHLT

更新时间： 2024-02-08 13:20:00

品牌	Logo	应用领域
急速微 - ALLEGRO		光电二极管信息通信管理
页数	文件大小	规格书
11页	570K
描述
MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCHES

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A3213ELHLT 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	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：	0.69	模拟集成电路 - 其他类型：	ANALOG CIRCUIT
JESD-30 代码：	R-PSIP-T3	JESD-609代码：	e3
长度：	4.09 mm	湿度敏感等级：	1
功能数量：	1	端子数量：	3
最高工作温度：	150 °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：	5.3 mm	最大供电电压 (Vsup)：	5.5 V
最小供电电压 (Vsup)：	2.4 V	标称供电电压 (Vsup)：	3 V
表面贴装：	NO	技术：	BICMOS
温度等级：	AUTOMOTIVE	端子面层：	Matte Tin (Sn)
端子形式：	THROUGH-HOLE	端子节距：	1.27 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

A3213ELHLT 数据手册

3213 AND 3214

MICROPOWER,

ULTRA-SENSITIVE

HALL-EFFECT SWITCHES

FUNCTIONAL DESCRIPTION

Low Average Power. Internal timing circuitry activates the

sensor for 60 µs and deactivates it for the remainder of the

period (240 µs for the A3213xx and 60 ms for the A3214xx).

A short "awake" time allows for stabilization prior to the

sensor sampling and data latching on the falling edge of the

timing pulse. The output during the "sleep" time is latched in

the last sampled state. The supply current is not affected by

the output state.

PERIOD

60 µs - "AWAKE"

IDD(EN)

"SLEEP"

SAMPLE &

OUTPUT LATCHED

Dwg. EH-012-1

IDD(DIS)

Dwg. WH-017-1

Chopper-Stabilized Technique. The Hall element can be

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 depen-

dencies, 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 tempera-

ture 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.

—

HALL

VOLTAGE

Dwg. AH-011-2

Operation. The output of this device switches low (turns on)

when a magnetic field perpendicular to the Hall sensor exceeds

the operate point B_OPS(or is less than B_OPN). After turn-on,

the output is capable of sinking up to 1 mA and the output

voltage is V_OUT(ON). When the magnetic field is reduced below

the release point B_RPS(or increased above B_RPN), the device

output switches high (turns off). The difference in the mag-

netic 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.

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.

As used here, negative flux densities are defined as less

than zero (algebraic convention) and -50 G is less than +10 G.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

1...4 5 678 9 10 11

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与A3213ELHLT相关器件

型号	品牌	描述	获取价格	数据表
A3213ELHLT-T	ALLEGRO	MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCHES	获取价格
A3213ELHLX-T	ALLEGRO	Micropower Ultra-Sensitive Hall-Effect Switches	获取价格
A3213EUA	ALLEGRO	MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCHES	获取价格
A3213EUA-LC	ALLEGRO	Analog Circuit, 1 Func, BICMOS, PSIP3, SIP-3	获取价格
A3213EUA-LC-T	ALLEGRO	Sensor/Transducer, Open-drain, BICMOS, 3 Pin, Plastic/epoxy,	获取价格
A3213EUA-T	ALLEGRO	MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCHES	获取价格

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