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參數(shù)資料
| 型號： | A3230LUA-T |
| 廠商： | Allegro Microsystems Inc |
| 文件頁數(shù)： | 9/14頁 |
| 文件大小： | 512K |
| 描述： | IC SW HALL EFFECT CHOPPER 3-SIP |
| 產(chǎn)品培訓(xùn)模塊： | Current Sensor |
| 標(biāo)準(zhǔn)包裝： | 4,000 |
| 傳感范圍： | 25G 跳閘，-25G 釋放 |
| 類型： | 雙極卡鎖 |
| 電源電壓： | 3.6 V ~ 24 V |
| 電流 - 電源： | 3.5mA |
| 電流 - 輸出（最大）： | 60mA |
| 輸出類型： | 數(shù)字式，開漏極 |
| 特點： | 穩(wěn)壓電壓 |
| 工作溫度： | -40°C ~ 150°C |
| 封裝/外殼： | 3-SIP |
| 供應(yīng)商設(shè)備封裝： | 3-SIP |
| 包裝： | 散裝 |
| 產(chǎn)品目錄頁面： | 1139 (CN2011-ZH PDF) |
| 其它名稱： | 620-1045 |
Chopper-Stabilized Hall Effect Bipolar Switch
A3230
8
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
exhibiting negative switch behavior operate in a similar but
opposite manner. A north polarity eld of suf cient strength,
> B
RP
, (more north than B
RP
) is required for operation, although
the result is that V
OUT
switches high, as shown in panel C. When
the eld is reduced beyond the B
OP
level, the device switches
back to the low state.
The A3230 is designed to attain a small hysteresis, and thereby
provide more sensitive switching. Although this means that
true latching behavior cannot be guaranteed in all cases, proper
switching can be ensured by use of both south and north mag-
netic elds, as in a ring magnet.
Bipolar devices adopt an indeterminate output state when
powered-on in the absence of a magnetic eld or in a eld that
lies within the hysteresis band of the device. The correct state is
attained after the rst excursion beyond B
OP
or B
RP
.
For more information on Bipolar switches, refer to Application
Note 27705, Understanding Bipolar Hall Effect Sensor ICs.
Applications
It is strongly recommended that an external bypass capacitor be
connected (in close proximity to the Hall element) between the
supply and ground of the device to reduce both external noise
and noise generated by the chopper stabilization technique. As is
shown in Panel B of gure 1, a 0.1糉 capacitor is typical.
Extensive applications information on magnets and Hall-effect
devices is available in:
" Hall-Effect IC Applications Guide, AN27701,
" Hall-Effect Devices: Gluing, Potting, Encapsulating, Lead
Welding and Lead Forming, AN27703.1
" Soldering Methods for Allegros Products SMT and Through-
Hole, AN26009
All are provided in Allegro Electronic Data Book, AMS-702 and
the Allegro Web site: www.allegromicro.com
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