A3212LLHLT-T

更新时间： 2024-01-26 22:30:48

品牌	Logo	应用领域
急速微 - ALLEGRO		模拟IC 开关信号电路光电二极管信息通信管理
页数	文件大小	规格书
13页	381K
描述
MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCH

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A3212LLHLT-T 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：	,
针数：	3	Reach Compliance Code：	compliant
HTS代码：	8542.39.00.01	风险等级：	5.64
Is Samacsys：	N	模拟集成电路 - 其他类型：	ANALOG CIRCUIT
JESD-30 代码：	R-PSSO-G3	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：	150 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	240	认证状态：	Not Qualified
座面最大高度：	1.57 mm	最大供电电压 (Vsup)：	3.5 V
最小供电电压 (Vsup)：	2.5 V	标称供电电压 (Vsup)：	2.75 V
表面贴装：	YES	技术：	BICMOS
温度等级：	AUTOMOTIVE	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	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：	3.035 mm	Base Number Matches：	1

A3212LLHLT-T 数据手册

A3212

MICROPOWER,

ULTRA-SENSITIVE

HALL-EFFECT SWITCH

FUNCTIONAL DESCRIPTION

Low Average Power. Internal timing circuitry activates the

sensor for 45 µs and deactivates it for the remainder of the pe-

riod (45 ms). 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

"AWAKE"

IDD(EN)

"SLEEP"

SAMPLE &

OUTPUT LATCHED

IDD(DIS)

Dwg. WH-017-2

—

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 cancel-

lation 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 dependencies, 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. A relatively high sam-

pling frequency is used for faster signal processing capability

can be processed.

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.

Dwg. EH-012-1

115 Northeast Cutoff, Box 15036

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

1...3 4 567 8 9...13

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与A3212LLHLT-T相关器件

型号	品牌	描述	获取价格	数据表
A3212LLHLX-T	ALLEGRO	Analog Circuit,	获取价格
A3212LUA	ALLEGRO	MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCH	获取价格
A3212LUA	SANKEN	Analog Circuit, 1 Func, BICMOS, PSIP3, ULTRA MINI, SIP-3	获取价格
A3212LUA2	ALLEGRO	Analog Circuit, 1 Func, BICMOS, PSIP3, SIP-3	获取价格
A3212LUA-C	ALLEGRO	Sensor/Transducer, Open-drain, BICMOS, 3 Pin, Plastic/epoxy,	获取价格
A3212LUA-LC	ALLEGRO	暂无描述	获取价格

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