参数资料
型号: A1140EUA-T
厂商: Allegro Microsystems Inc
文件页数: 5/15页
文件大小: 487K
描述: IC SWITCH HALL EFFECT UNI 3-SIP
标准包装: 500
传感范围: 110G 跳闸,45G 释放
类型: 单极开关
电源电压: 3.5 V ~ 24 V
电流 - 电源: 5mA
输出类型: 数字式,开漏极
特点: 稳压电压
工作温度: -40°C ~ 85°C
封装/外壳: 3-SIP
供应商设备封装: 3-SIP
包装: 散装
Sensitive Two-Wire Chopper-Stabilized
Unipolar Hall Effect Switches
A1140, A1142, and
A1143
4
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
ELECTRICAL CHARACTERISTICS over the operating voltage and temperature ranges, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.   Typ.   Max.   Units
Supply Voltage
1
V
CC
3.5

24
V
Supply Current
2
 
I
CC(L)
B>B
OP
 for A1140
2

5
mA
B>B
OP
 for A1142; B
RP
 for A1143
5
-
6.9    mA
I
CC(H)
B>B
OP
 for A1143
B
RP
 for A1140, A1142
12
-
17    mA
Reverse Supply Current
I
RCC
 V
RCC
 = 18 V

    1.6    mA
Supply Zener Clamp Voltage  V
ZSUPPLY
I
CC
 = I
CC(L)(max)
+ 3 mA; T
A
 = 25癈
28

40
V
Supply Zener Clamp Current  I
ZSUPPLY
V
ZSUPPLY
 = 28 V


I
CC(L)(max)
+ 3 mA
mA
Output Slew Rate
3
di/dt
Capacitance of the oscilloscope performing the
measurement = 20 pF

36
    mA/約
Chopping Frequency
f
C

200

kHz
Power-On Time
3
t
on
C
BYPASS
 = 0.01 糉


25
Power-On State
5,6
POS   t < t
on
; V
CC
 slew rate > 25 mV/約
    HIGH    

1
V
CC
 represents the generated voltage between the VCC pin and the GND pin.
2
Relative values of B use the algebraic convention, where positive values indicate south magnetic polarity, and negative values indicate north magnetic
polarity; therefore greater B values indicate a stronger south polarity field (or a weaker north polarity field, if present).
3
Measured without bypass capacitor between VCC and GND. Use of a bypass capacitor results in slower current change.
 
3
Measured with and without bypass capacitor of 0.01 糉. Adding a larger bypass capacitor causes longer Power-On Time.
5
POS is defined as true only with a V
CC
 slew rate of 25 mV / 約 or greater. Operation with a V
CC
 slew rate less than 25 mV / 約 can permanently harm
device performance.
6
POS is undefined for t > t
on
 or B
RP
 < B < B
OP
 .
MAGNETIC CHARACTERISTICS over the operating voltage and temperature ranges, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.   Typ.*   Max.   Units
Operate Point
B
OP
A1140, A1142 I
CC
 = I
CC(L)
50
80    110    G
A1143
I
CC
 = I
CC(H)
Release Point
B
RP
A1140, A1142 I
CC
 = I
CC(H)
45
65    105    G
A1143
I
CC
 = I
CC(L)
Hysteresis
B
HYS
B
HYS
 = B
OP
  B
RP
5
15
30
G
*Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions, such as T
A
 = 25癈 and V
CC
 = 12 V.
Performance may vary for individual units, within the specified maximum and minimum limits.
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