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參數(shù)資料
| 型號： | A3212EELLT-T |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCH |
| 中文描述： | 微功耗，超靈敏霍爾開關外匯FECT |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 384K |
| 代理商： | A3212EELLT-T |
The A3212 integrated circuit is an ultra-sensitive, pole in de pen dent Hall-effect
switch with a latched digital output. This sensor is es pe cial y suited for opera-
tion in battery-operated, hand-held equip ment such as cellular and cordless
tele phones, pagers, and palmtop com put ers. A 2.5 volt to 3.5 volt operation and a
unique clocking scheme reduce the average op er at ng power requirements to less
than 15
μ
W with a 2.75 volt supply.
Unlike other Hall-effect switches, either a north or south pole of suf i cient
strength will turn the output on; in the absence of a magnetic field, the output
is off. The polarity independence and minimal power requirement allow these
devices to easily replace reed switches for superior reliability and ease of manu-
facturing, while eliminating the requirement for signal conditioning.
Improved stability is made possible through chopper stabilization (dynamic off-
set cancellation), which reduces the residual offset voltage normally caused by
device overmolding, temperature de pen den cies, and thermal stress.
This device includes on a single silicon chip a Hall-voltage generator, small-sig-
nal amplifier, chopper sta bi i za ion, a latch, and a MOSFET output. Ad vanced
BiCMOS processing is used to take advantage of low-voltage and low-power
requirements, component matching, very low input-offset errors, and small com-
ponent geometries.
Four package styles provide magnetically op i mized solutions for most ap pli
ca ions. Miniature low-profile surface-mount package types
EH
and
EL
(0.75 and 0.50 mm nominal height) are leadless,
LH
is a leaded low-profile
SMD, and
UA
is a three-lead SIP for through-hole mount ng. Each package is
available in a lead (Pb) free version (suffix,
–T
) with 100% matte tin plated lead-
frame. EL package for limited release, engineering samples available.
FEATURES
■
Micropower Operation
■
Operation with North or South Pole
■
■
2.5 V to 3.5 V Battery Operation
Chopper Stabilized
Superior Temperature Stability
Extremely Low Switch-Point Drift
Insensitive to Physical Stress
■
ESD Protected to 5 kV
■
Sol d-State Reliability
■
Small Size
■
Easily Manufacturable with Magnet Pole Independence
D
2
A3212
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
DD
..............................
5 V
Magnetic Flux Density, B ..........
Unlimited
Output Off Voltage, V
OUT
......................
5 V
Output Current, I
OUT
...........................
1 mA
Junction Temperature, T
J
................
+170°C
Operating Temperature, T
A
Range 'E-' ....................
-40°C to +85°C
Range 'L-' ..................
-40°C to +150°C
Storage Temperature Range,
T
S
..............................
-65°C to +170°C
Caution: These CMOS devices have input
static protection (Class 3) but are still sus-
ceptible to damage if exposed to extremely
high static electrical charges.
MICROPOWER, ULTRA-SENSITIVE
HALL-EF FECT SWITCH
2 x 2 mm MLPD
Package A3212EELLT-T
Approximate actual size
相關PDF資料 |
PDF描述 |
|---|---|
| A3212 | MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCH |
| A3212EEHLT | MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCH |
| A3212EEHLT-T | MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCH |
| A3212ELHLT | MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCH |
| A3212ELHLT-T | MICROPOWER, ULTRA-SENSITIVE HALL-EF FECT SWITCH |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| A3212ELHLT | 制造商:Allegro MicroSystems LLC 功能描述:Hall Effect Sensor 1mA Latch 2.75V 3-Pin SOT-23W T/R |
| A3212ELHLT-T | 功能描述:IC SWITCH HALL EFFECT SOT23W RoHS:是 類別:傳感器，轉換器 >> 磁性 - 霍爾效應，數(shù)字式開關，線性，羅盤 (IC) 系列:- 標準包裝:1 系列:- 傳感范圍:20mT ~ 80mT 類型:旋轉 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:可編程 工作溫度:-40°C ~ 150°C 封裝/外殼:20-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:20-SSOP 包裝:Digi-Reel® 其它名稱:AS5132-HSST-500DKR |
| A3212ELHLT-T-CUT | 制造商:Allegro MicroSystems LLC 功能描述: |
| A3212ELHLX-T | 制造商:Allegro MicroSystems LLC 功能描述:IC SWITCH HALL EFFECT SOT23W |
| A3212EUA | 制造商:Allegro MicroSystems LLC 功能描述: |
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