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A1220ELHLX-T PDF预览

A1220ELHLX-T

更新时间: 2024-02-26 20:28:43
品牌 Logo 应用领域
急速微 - ALLEGRO /
页数 文件大小 规格书
13页 281K
描述
Chopper Stabilized Precision Hall Effect Latches

A1220ELHLX-T 数据手册

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A1220, A1221, and A1222  
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  
The A1220, A1221, and A1222 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  
includesonasinglesiliconchipavoltageregulator,Hall-voltage  
generator,small-signalamplifier,chopperstabilization,Schmitt  
trigger, and a short-circuit protected open-collector output 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)  
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. 8  

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