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參數(shù)資料
| 型號(hào)： | A1148LUATI |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
| 中文描述： | 低電流超靈敏雙線斬波穩(wěn)定單極霍爾效應(yīng)開關(guān) |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 319K |
| 代理商： | A1148LUATI |
A1147 and A1148
A1147-DS, Rev. 6
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
AB SO LUTE MAX MUM RAT NGS
Supply Voltage, V
CC
..........................................
28 V
Reverse-Supply Voltage, V
RCC
........................
–18 V
Magnetic Flux Density, B.........................
Unlimited
Power Dissipation, P
D
............................
Graph, p. 5
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
On-chip protection
y
Supply transient protection
y
Reverse-battery protection
y
On-board voltage regulator
y
3.5 to 24 V operation
Low Current Ultrasensitive Two-Wire Chopper-Stabilized
Unipolar Hall Effect Switches
Package LH, 3-pin SOT
Features and Benefits
The A1147 and A1148 devices are two-wire, unipolar, Hall effect switches that are
factory-programmed at end-of-line to optimize ultrasensitive magnetic switchpoint
accuracy. These devices use a patented high frequency chopper-stabilization tech-
nique, produced using the Allegro advanced BiCMOS wafer fabrication process,
to achieve magnetic stability and to eliminate offset inherent in single-element
devices exposed to harsh application environments.
Commonly found in a number of automotive applications, these switches are
utilized to sense seat track position, seat belt buckle presence, hood/trunk latch-
ing, and shift selector position. Two-wire unipolar switches, such as the A1147
and A1148, are particularly advantageous in price-sensitive applications because
they require one less wire for operation than do switches with the more traditional
open-collector output. Additionally, the system designer inherently gains diagnos-
tics because there is always output current flowing, which should be in either of
two narrow ranges. Any current level not within these ranges indicates a fault con-
dition. These devices also feature on-chip transient protection and a Zener clamp
to protect against overvoltage conditions on the supply line.
The output currents of the A1148 switches HIGH in the presence of a south (+)
polarity magnetic field of sufficient strength, and switches LOW otherwise, as in
the presence of a weak field or a north (–) polarity field. The A1147 has an oppo-
site output: the currents switch LOW in the presence of a south-polarity magnetic
field of sufficient strength, and switch HIGH otherwise.
Both versions are offered in two package styles. The LH is a SOT-23W, miniature
low-profile package for surface-mount applications. The UA is a three-lead ultra-
mini SIP for through-hole mounting. Each package is available in a lead (Pb) free
version (suffix,
–T
) with 100% matte tin plated leadframe. Field-programmable
versions also available: A1180 and A1181.
Package UA, 3-pin SIP
Chopper stabilization
y
Low switchpoint drift over operating
temperature range
y
Low sensitivity to stress
Factory programmed at end-of-line for
optimized switchpoints
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相關(guān)PDF資料 |
PDF描述 |
|---|---|
| A1148LUATI-T | Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
| A1148LLHLT | Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
| A1147 | Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
| A1148 | Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
| A1147ELHLT | Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| A1148LUATI-T | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:Low Current Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
| A11490 | 功能描述:大功率LED - 單色 Amber 590nm 5 Watt RoHS:否 制造商:Cree, Inc. 照明顏色:Blue 波長(zhǎng):465 nm 光強(qiáng)度: 光通量/輻射通量:500 mW 正向電流:350 mA 正向電壓:3.1 V 安裝風(fēng)格:SMD/SMT 功率額定值: 系列:XB-D 封裝:Reel |
| A114A | 制造商:General Electric Company 功能描述: 制造商:Advanced Semiconductor Inc 功能描述:Rectifier Diode, 100 Volt, Axial-B 制造商:SIGNAL DIODE 功能描述:Rectifier Diode, 100 Volt, Axial-B |
| A11-4A | 制造商:Honeywell Sensing and Control 功能描述: |
| A114AX9 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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