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參數(shù)資料
| 型號(hào)： | A3245 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Chopper-Stabilized Omnipolar Hall-Effect Switches |
| 中文描述： | 斬波穩(wěn)定全極霍爾效應(yīng)開(kāi)關(guān) |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大?。?/td> | 392K |
| 代理商： | A3245 |
A3245
A3245-DS, Rev. 1
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
The A3245 integrated circuit is an omnipolar, ultrasensitive Hall-effect switch
with a digital output. This sensor has an integrated regulator permitting operation
to 24 V, making it the
fi
rst omnipolar switch available for operation to 24 V. This
device is especially suited for operation over extended temperature ranges, up
to +150°C. Superior high-temperature performance is made possible through an
Allegro
patented dynamic offset cancellation, which reduces the residual offset
voltage normally caused by device overmolding, temperature excursions, and
thermal stress.
The A3245 Hall-effect switch includes the following on a single silicon chip:
voltage regulator, Hall-voltage generator, small-signal ampli
fi
er, chopper stabiliza-
tion, Schmitt trigger, and a short circuit protected open-drain output. Advanced
BiCMOS wafer fabrication processing is used to take advantage of low-voltage
requirements, component matching, very low input-offset errors, and small com-
ponent geometries.
The omnipolar operation of the A3245 allows activation with either a north
or
a south polarity
fi
eld of suf
fi
cient strength. In the absence of a magnetic
fi
eld,
the output is off. This patented magnetic-polarity-independence feature makes
this device an excellent replacement for reed switches, with improved ease of
manufacturing, because the A3245 does not require manufacturers to orient their
magnets. These devices allow simple on/off switching in industrial, consumer, and
automotive applications.
The A3245 is rated for operation between the ambient temperatures –40°C and
85°C for the E temperature range, and –40°C to 150°C for the L temperature
range. The small geometries of the BiCMOS process allow these devices to be
provided in ultrasmall packages. The package styles available provide magneti-
cally optimized solutions for most applications. Package LH is an SOT23W, a
miniature low-pro
fi
le surface-mount package, while package UA is a three-lead
ultramini SIP for through-hole mounting. Each package is available in a lead (Pb)
free version, with 100% matte tin plated leadframes.
AB SO LUTE MAX MUM RAT NGS
Supply Voltage, V
CC
..........................................
28 V
Reverse-Supply Voltage, V
RCC
........................
–18 V
Reverse-Supply Current, I
RCC
........................–
2 mA
Output Off Voltage, V
OUT
..................................
28 V
Output Current, I
OUTSINK
...........
Internally Limited
Magnetic Flux Density, B.........................
Unlimited
Operating Temperature
Ambient, T
A
, Range E..................
–40oC to 85oC
Ambient, T
A
, Range L................
–40oC to 150oC
Maximum Junction, T
J(MAX)
......................
165oC
Storage Temperature, T
S
..................
–65oC to 170oC
Chopper-Stabilized
Omnipolar Hall-Effect Switches
Package LH, 3-pin Surface Mount
Features and Bene
fi
ts
Package UA, 3-pin SIP
Omnipolar operation
Chopper stabilization
y
Superior temperature stability
y
Extremely low switchpoint drift
y
Insensitive to physical stress
Reverse battery protection
Output short circuit protection
Solid state reliability
Small size
Robust EMC capability
High ESD ratings (HBM)
1
3
2
V
G
V
1
2
3
V
V
G
1
2
3
1
2
3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| A3245EUA | Chopper-Stabilized Omnipolar Hall-Effect Switches |
| A3245EUA-T | Chopper-Stabilized Omnipolar Hall-Effect Switches |
| A3245LLHLT-T | Chopper-Stabilized Omnipolar Hall-Effect Switches |
| A3245LUA | Chopper-Stabilized Omnipolar Hall-Effect Switches |
| A3245LUA-T | Chopper-Stabilized Omnipolar Hall-Effect Switches |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A3245_06 | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:Chopper-Stabilized Omnipolar Hall-Effect Switches |
| A32450-0009 | 功能描述:重負(fù)荷電源連接器 A32 PLUG 50mm CONT 50MMPINCON RoHS:否 制造商:Hirose Connector 系列:PS2 產(chǎn)品類型:Connectors 位置/觸點(diǎn)數(shù)量: 端接類型:Crimp 觸點(diǎn)材料: 觸點(diǎn)電鍍:Gold 電壓額定值: 電流額定值:300 A 附件類型: |
| A32450-0019 | 功能描述:重負(fù)荷電源連接器 A32 PLUG 50mm CONT WITH 2.5mm AUX CONT RoHS:否 制造商:Hirose Connector 系列:PS2 產(chǎn)品類型:Connectors 位置/觸點(diǎn)數(shù)量: 端接類型:Crimp 觸點(diǎn)材料: 觸點(diǎn)電鍍:Gold 電壓額定值: 電流額定值:300 A 附件類型: |
| A32450-0049 | 功能描述:重負(fù)荷電源連接器 A32 PLUG 50mm CONT WITH 2 AUX/2 PILOT RoHS:否 制造商:Hirose Connector 系列:PS2 產(chǎn)品類型:Connectors 位置/觸點(diǎn)數(shù)量: 端接類型:Crimp 觸點(diǎn)材料: 觸點(diǎn)電鍍:Gold 電壓額定值: 電流額定值:300 A 附件類型: |
| A32450-1009 | 功能描述:重負(fù)荷電源連接器 A32 PLUG 50mm CONT 50MMPINCON RoHS:否 制造商:Hirose Connector 系列:PS2 產(chǎn)品類型:Connectors 位置/觸點(diǎn)數(shù)量: 端接類型:Crimp 觸點(diǎn)材料: 觸點(diǎn)電鍍:Gold 電壓額定值: 電流額定值:300 A 附件類型: |
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