Datasheet > A3121L-LT

A3121L-LT

更新时间： 2024-11-03 23:26:43

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A3121L-LT 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 (A3121, A3122, and A3123) are identical except

for magnetic switch points.

Each device includes a voltage regulator for operation with supply

voltages of 4.5 volts to 24 volts, reverse battery protection diode, qua-

dratic 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 A3121 is an improved replacement for the

UGx3113 and UGx3119.

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 SOT89/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.

FEATURES and BENEFITS

■ Superior Temp. Stability for Automotive or Industrial Applications

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

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

■ Reverse Battery Protection

ABSOLUTE MAXIMUM RATINGS

at T = +25°C

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

■ Activate with Small, Commercially Available Permanent Magnets

■ Solid-State Reliability … No Moving Parts

■ Small Size

■ Resistant to Physical Stress

The A3121xU is not for new design.

The A3122xU and A3123xU are last-time buy.

Orders accepted until April 15, 2002.

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

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

Storage Temperature Range,

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A3121L-LT相关器件

型号	品牌	获取价格	描述	数据表
A3121LLTTR	ALLEGRO	获取价格	Analog Circuit, 1 Func, PSSO3, TO-243AA, SOT-89, 3 PIN
A3121LT	ALLEGRO	获取价格	HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION
A3121LU	ALLEGRO	获取价格	HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION
A3121LU	SANKEN	获取价格	Analog Circuit, 1 Func, PSIP3, MINI, PLASTIC, SIP-3
A3121L-U	ETC	获取价格
A3121LUA	ALLEGRO	获取价格	HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION
A3121LUA-LC	ALLEGRO	获取价格	Analog Circuit, 1 Func, PSIP3, ULTRA MINI, SIP-3
A3121LUA-TL	ALLEGRO	获取价格	Analog Circuit, 1 Func, PSSO3, SMT-3
A3121U	ALLEGRO	获取价格	HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION
A3121UA	ALLEGRO	获取价格	HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION

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