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參數(shù)資料
| 型號： | A1220LUA-T |
| 廠商： | Allegro Microsystems Inc |
| 文件頁數(shù)： | 10/16頁 |
| 文件大?。?/td> | 347K |
| 描述： | IC HALL EFFECT LATCH 3V 3-SIP |
| 產(chǎn)品培訓模塊： | Current Sensor |
| 標準包裝： | 4,000 |
| 傳感范圍： | 40G 跳閘，-40G 釋放 |
| 類型： | 雙極卡鎖 |
| 電源電壓： | 3 V ~ 24 V |
| 電流 - 電源： | 4mA |
| 電流 - 輸出（最大）： | 25mA |
| 輸出類型： | 數(shù)字式，開漏極 |
| 特點： | 穩(wěn)壓電壓 |
| 工作溫度： | -40°C ~ 150°C |
| 封裝/外殼： | 3-SIP |
| 供應商設備封裝： | 3-SIP |
| 包裝： | 散裝 |
| 其它名稱： | 620-1446 A1220LUA-T-ND |
Chopper Stabilized Precision Hall Effect Latches
A1220, A1221,
A1222, and A1223
10
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
C
BYP
A122x
VOUT
GND
0.1 糉
VCC
Output
R
L
V
S
Operation
The output of these devices switches low (turns on) when a mag-
netic field perpendicular to the Hall element exceeds the operate
point threshold, B
OP
(see panel A of figure 1). After turn-on, the
output voltage is V
OUT(SAT)
. The output transistor is capable of
sinking current up to the short circuit current limit, I
OM
, which is
a minimum of 30 mA. When the magnetic field is reduced below
the release point, B
RP
, the device output goes high (turns off).
The difference in the magnetic operate and release points is the
hysteresis, B
HYS ,
of the device. This built-in hysteresis allows
clean switching of the output even in the presence of external
mechanical vibration and electrical noise.
Removal of the magnetic field will leave the device output
latched on if the last crossed switchpoint is B
OP
, or latched off if
the last crossed switch point is B
RP
.
Powering-on the device in the hysteresis range (less than B
OP
and
higher than B
RP
) will give an indeterminate output state. The cor-
rect state is attained after the first excursion beyond B
OP
or B
RP
.
Applications
It is strongly recommended that an external bypass capacitor be
connected (in close proximity to the Hall element) 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 figure 1, a 0.1 糉 capacitor is typical.
Extensive applications information for Hall effect devices is
available in:
" Hall-Effect IC Applications Guide, Application Note 27701
" Guidelines for Designing Subassemblies Using Hall-Effect
Devices, Application Note 27703.1
" Soldering Methods for Allegros Products SMT and Through-
Hole, Application Note 26009
All are provided in Allegro Electronic Data Book, AMS-702, and
the Allegro Web site, www.allegromicro.com.
Figure 1. Switching behavior of latches. In panel A, on the horizontal axis, the B+ direction indicates increasing south polarity magnetic field strength,
and the B direction indicates decreasing south polarity field strength (including the case of increasing north polarity). This behavior can be exhibited
when using a circuit such as that shown in panel B.
(A)
(B)
Functional Description
B
HYS
V
CC
V
OUT(SAT)
B+
B
V+
0
0
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| A1220LUA-T | 制造商:Allegro MicroSystems 功能描述:Hall Effect Latch IC |
| A1220U | 制造商:TECCOR 制造商全稱:TECCOR 功能描述:solid state crowbar devices |
| A1220UA4LRP | 功能描述:硅對稱二端開關元件 4Chp 100/180V 50A RoHS:否 制造商:Bourns 轉折電流 VBO:40 V 最大轉折電流 IBO:800 mA 不重復通態(tài)電流: 額定重復關閉狀態(tài)電壓 VDRM:25 V 關閉狀態(tài)漏泄電流（在 VDRM IDRM 下）: 保持電流（Ih 最大值）:50 mA 開啟狀態(tài)電壓:5 V 關閉狀態(tài)電容 CO:120 pF 最大工作溫度:+ 150 C 安裝風格:SMD/SMT 封裝 / 箱體:DO-214AA |
| A1220UA4LTP | 功能描述:硅對稱二端開關元件 4Chp 100/180V 50A RoHS:否 制造商:Bourns 轉折電流 VBO:40 V 最大轉折電流 IBO:800 mA 不重復通態(tài)電流: 額定重復關閉狀態(tài)電壓 VDRM:25 V 關閉狀態(tài)漏泄電流（在 VDRM IDRM 下）: 保持電流（Ih 最大值）:50 mA 開啟狀態(tài)電壓:5 V 關閉狀態(tài)電容 CO:120 pF 最大工作溫度:+ 150 C 安裝風格:SMD/SMT 封裝 / 箱體:DO-214AA |
| A1220UA4LXX | 制造商:LITTELFUSE 制造商全稱:Littelfuse 功能描述:The series provides a specialized asymmetrical dual port overvoltage protection |
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