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參數(shù)資料
| 型號(hào)： | A1145LUA-T |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
| 中文描述： | 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 |
| 文件大小： | 319K |
| 代理商： | A1145LUA-T |
A1145 and A1146
A1145-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
...........................................
28V
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
Ultrasensitive Two-Wire Chopper-Stabilized
Unipolar Hall Effect Switches
Package LH, 3-pin SOT
Features and Benefits
The A1145 and A1146 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 A1145
and A1146, 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 A1146 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 A1145 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: A1185 and A1186.
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 |
|---|---|
| A1145LUATI | Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
| A1145LUATI-T | Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
| A1145ELHLT | Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
| A1145ELHLT-T | Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
| A1145EUA | 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 |
|---|---|
| A1145LUATI | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
| A1145LUATI-T | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
| A1146 | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:Ultrasensitive Two-Wire Chopper-Stabilized Unipolar Hall Effect Switches |
| A-1146 | 制造商:TE Connectivity 功能描述: |
| A1146ELHLT | 功能描述:IC SWITCH HALL EFFECT UNI SOT-23 RoHS:否 類別:傳感器，轉(zhuǎn)換器 >> 磁性 - 霍爾效應(yīng)，數(shù)字式開關(guān)，線性，羅盤 (IC) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉(zhuǎn) 電源電壓:4.5 V ~ 5.5 V 電流 - 電源:15mA 電流 - 輸出（最大）:- 輸出類型:數(shù)字式，PWM，8.5 位串行 特點(diǎn):可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應(yīng)商設(shè)備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
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