參數(shù)資料
型號(hào)： A1182
廠商： Allegro MicroSystems, Inc.
英文描述： Two-Wire, Programmable, Chopper-Stabilized, Unipolar Hall-Effect Switch
中文描述： 兩線，可編程，斬波穩(wěn)定，單極霍爾效應(yīng)開(kāi)關(guān)
文件頁(yè)數(shù)： 4/16頁(yè)
文件大?。?/td> 356K
代理商： A1182
4
A1180-DS, Rev. 2
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Sensitive Two-Wire Field-Programmable Chopper-Stabilized Unipolar Hall Effect Switches
A1180/81/82/83
MAGNETIC CHARACTERISTICS
1
over the operating voltage and temperature range, unless otherwise speci
fi
ed
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Programmable Operate Point Range
B
OPrange
I
CC
= I
CC(H)
for A1180 and A1182
I
CC
= I
CC(L)
for A1181 and A1183
60
–
200
G
Initial Operate Point Range
B
OPinit
V
CC
= 12 V
–
33
60
G
Switchpoint Step Size
2
B
RES
V
CC
= 5 V, T
A
= 25°C
4
8
12
G
Number of Programming Bits
–
Switchpoint setting
–
5
–
Bit
Programming locking
–
1
–
Bit
Temperature Drift of B
OP
Δ
B
OP
–
–
±20
G
Hysteresis
B
HYS
B
HYS
= B
OP
– B
RP
5
15
30
G
1
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
fi
eld (or a weaker north polarity
fi
eld, if present).
2
The range of values speci
fi
ed for B
RES
is a maximum, derived from the cumulative programming bit errors.
ELECTRICAL CHARACTERISTICS
over the operating voltage and temperature range, unless otherwise speci
fi
ed
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Supply Voltage
1
V
CC
Device powered on
3.5
–
24
V
Supply Current
2
I
CC(L)
B >B
OP
for A1180; B <B
RP
for A1181
2
–
5
mA
B >B
OP
for A1182; B <B
RP
for A1183
B >B
OP
for A1181, A1183
B <B
RP
for A1180, A1182
I
CC
= I
CC(L)(max)
+ 3 mA; T
A
= 25°C
5
–
6.9
mA
I
CC(H)
12
–
17
mA
Supply Zener Clamp Voltage
V
Z(supply)
28
–
40
V
Supply Zener Clamp Current
I
Z(supply)
V
Z(supply)
= 28 V
–
–
I
CC(L)(max)
+ 3 mA
mA
Reverse Supply Current
I
RCC
V
RCC
= –18 V
No bypass capacitor; capacitance of the
oscilloscope performing the measurement
= 20 pF
–
–
–1.6
mA
Output Slew Rate
3
di/dt
–
36
–
mA/
μ
s
Chopping Frequency
f
C
–
200
–
kHz
Power-On Time
4
t
on
After factory trimming; with and without
bypass capacitor (C
BYP
= 0.01
μ
F)
t
on
≤
t
on(max)
;
V
CC
slew rate
≥
25 mV/
μ
s
–
–
25
μ
s
Power-On State
5,6
POS
–
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
fi
eld (or a weaker north polarity
fi
eld, if present).
3
Measured without bypass capacitor between VCC and GND. Use of a bypass capacitor results in slower current change.
4
Measured with and without bypass capacitor of 0.01
μ
F. Adding a larger bypass capacitor causes longer Power-On Time.
5
POS is de
fi
ned as true only with a V
CC
slew rate of 25 mV /
μ
s or greater. Operation with a V
CC
slew rate less than 25 mV /
μ
s can permanently harm
device performance.
6
POS is unde
fi
ned for t > t
on
or B
RP
< B < B
OP
.
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