A3122LT

更新时间： 2024-11-05 22:26:39

品牌	Logo	应用领域
急速微 - ALLEGRO		开关
页数	文件大小	规格书
8页	152K
描述
HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION

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A3122LT 数据手册

3121, 3122, AND

3123

HALL-EFFECT SWITCHES

FOR HIGH-TEMPERATURE OPERATION

These Hall-effect switches are monolithic integrated circuits with

tighter magnetic specifications, designed to operate continuously over

extended temperatures to +150°C, and are more stable with both tem-

perature and supply voltage changes. The unipolar switching character-

istic makes these devices ideal for use with a simple bar or rod magnet.

The three basic devices (3121, 3122, and 3123) are identical except for

magnetic switch points.

Each device includes a voltage regulator for operation with supply

voltages of 4.5 voltas to 24 volts, reverse battery protection diode,

quadratic Hall-voltage generator, temperature compensation circuitry,

small-signal amplifier, Schmitt trigger, and an open-collector output to

sink up to 25 mA. With suitable output pull up, they can be used with

bipolar or CMOS logic circuits. The 3121 is an improved replacement

for the 3113 and 3119.

The first character of the part number suffix determines the device

operating temperature range. Suffix ‘E–’ is for the automotive and

industrial temperature range of -40°C to +85°C. Suffix ‘L–’ is for the

automotive and military temperature range of -40°C to +150°C. Three

package styles provide a magnetically optimized package for most

applications. Suffix ‘–LT’ is a miniature SOT-89/TO-243AA transistor

package for surface-mount applications; suffix ‘–U’ is a three-lead

plastic mini-SIP while suffix ‘–UA’ is a three-lead ultra-mini-SIP.

Dwg. PH-003A

Pinning is shown viewed from branded side.

ABSOLUTE MAXIMUM RATINGS

at T = +25°C

FEATURES and BENEFITS

I Superior Temp. Stability for Automotive or Industrial Applications

Supply Voltage, V_CC...........................30 V

Reverse Battery Voltage, V_RCC........ -30 V

Magnetic Flux Density, B ....... Unlimited

Output OFF Voltage, V_OUT................ 28 V

Reverse Output Voltage, V_OUT........ -0.5 V

Continuous Output Current, I_OUT... 25 mA

Operating Temperature Range, T_A

I 4.5 V to 24 V Operation … Needs Only An Unregulated Supply

I Open-Collector 25 mA Output … Compatible with Digital Logic

I Reverse Battery Protection

I Activate with Small, Commercially Available Permanent Magnets

I Solid-State Reliability … No Moving Parts

I Small Size

Suffix ‘E–’ ................. -40°C to +85°C

Suffix ‘L–’ ............... -40°C to +150°C

Storage Temperature Range,

I Resistant to Physical Stress

T_S.............................. -65°C to +170°C

Always order by complete part number, e.g., A3121EU .

12 3 4 5 6 7 8

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与A3122LT相关器件

型号	品牌	获取价格	描述	数据表
A3122LU	ALLEGRO	获取价格	HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION
A3122LU	SANKEN	获取价格	Analog Circuit, 1 Func, PSIP3, MINI, PLASTIC, SIP-3
A3122LUA	ALLEGRO	获取价格	HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION
A3122LUA	SANKEN	获取价格	Analog Circuit, 1 Func, PSIP3, ULTRA MINI, SIP-3
A3122LUA-LC	ALLEGRO	获取价格	Analog Circuit, 1 Func, PSIP3, ULTRA MINI, SIP-3
A3122LUA-TL	ALLEGRO	获取价格	Analog Circuit, 1 Func, PSSO3, SMT-3
A3122U	ALLEGRO	获取价格	HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION
A3122UA	ALLEGRO	获取价格	HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION
A3123U*	ETC	获取价格	HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION
A3123E*	ETC	获取价格	HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION

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