Datasheet > A1220_12

A1220_12

更新时间： 2024-11-26 12:51:19

品牌	Logo	应用领域
急速微 - ALLEGRO		传感器
页数	文件大小	规格书
16页	307K
描述
The A1220, A1221, A1222, and A1223 Hall-effect sensor ICs are extremely temperature-stable and stress-resistant devices especially suited for operation over extended temperature ranges to 150Â°C.

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A1220_12 数据手册

A1220, A1221, A1222, and A1223

Chopper Stabilized Precision Hall Effect Latches

Features and Benefits

Description

▪ Symmetrical latch switchpoints

▪ Resistant to physical stress

▪ Superior temperature stability

▪ Output short-circuit protection

▪ Operation from unregulated supply down to 3 V

▪ Reverse battery protection

TheA1220, A1221,A1222, andA1223 Hall-effect sensor ICs

are extremely temperature-stable and stress-resistant devices

especiallysuitedforoperationoverextendedtemperatureranges

to 150°C. Superior high-temperature performance is made

possiblethroughdynamicoffsetcancellation,whichreducesthe

residualoffsetvoltagenormallycausedbydeviceovermolding,

temperature dependencies, and thermal stress. Each device

includes on a single silicon chip a voltage regulator, Hall-

voltagegenerator,small-signalamplifier,chopperstabilization,

Schmitttrigger,andashort-circuitprotectedopen-drainoutput

to sink up to 25 mA. A south pole of sufficient strength turns

the output on. A north pole of sufficient strength is necessary

to turn the output off.

▪ Solid-state reliability

▪ Small package sizes

Packages:

An onboard regulator permits operation with supply voltages

of 3 to 24 V. The advantage of operating down to 3 V is that

the device can be used in 3-V applications or with additional

external resistance in series with the supply pin for greater

protection against high voltage transient events.

Two package styles provide magnetically optimized packages

for most applications. Package type LH is a modified 3-pin

SOT23WsurfacemountpackagewhileUAisathree-pinultra-

mini SIP for through hole mounting. Both packages are lead

(Pb) free, with 100% matte tin plated leadframes.

3-pin SOT23W

(suffix LH)

(A1220, A1221

and A1222)

(A1223)

3-pin SIP (suffix UA)

Not to scale

Functional Block Diagram

VCC

Regulator

To All Subcircuits

VOUT

Low-Pass

Filter

Amp

Control

Current Limit

GND

A1220-DS, Rev. 14

12 3 4 5 6 7...16

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