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參數(shù)資料
| 型號(hào)： | A3230LUA-T |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Chopper-Stabilized Hall-Effect Bipolar Switch |
| 中文描述： | 斬波穩(wěn)定霍爾效應(yīng)雙極開(kāi)關(guān) |
| 文件頁(yè)數(shù)： | 8/12頁(yè) |
| 文件大小： | 478K |
| 代理商： | A3230LUA-T |
8
A3230-DS
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Chopper-Stabilized Hall Effect Bipolar Switch
A3230
exhibiting negative switch behavior operate in a similar but
opposite manner. A north polarity
fi
eld of suf
fi
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
fi
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
fi
elds, as in a ring magnet.
Bipolar devices adopt an indeterminate output state when
powered-on in the absence of a magnetic
fi
eld or in a
fi
eld that
lies within the hysteresis band of the device. The correct state is
attained after the
fi
rst excursion beyond B
OP
or B
RP
.
For more information on Bipolar switches, refer to Application
Note 27705,
Understanding Bipolar Hall Effect Sensors
.
Applications
It is strongly recommended that an external bypass capacitor be
connected (in close proximity to the Hall sensor) 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
fi
gure 1, a 0.1μF capacitor is typical.
Extensive applications information on magnets and Hall-effect
sensors 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 Allegro’s Products – SMT and Through-
Hole
, AN26009
All are provided in
Allegro Electronic Data Book
, AMS-702 and
the Allegro Web site: www.allegromicro.com
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| A3230 | Chopper-Stabilized Hall-Effect Bipolar Switch |
| A3230LLHLT-T | Chopper-Stabilized Hall-Effect Bipolar Switch |
| A3230LUA | Chopper-Stabilized Hall-Effect Bipolar Switch |
| A3242LLHLT | Chopper-Stabilized Unipolar Hall-Effect Switches |
| A3242ELHLT | Chopper-Stabilized Unipolar Hall-Effect Switches |
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