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| 型號： | A3250 |
| 廠商： | Allegro MicroSystems, Inc. |
| 英文描述： | Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect Switches |
| 中文描述： | 現(xiàn)場可編程斬波穩(wěn)定單極霍爾效應開關 |
| 文件頁數(shù)： | 3/15頁 |
| 文件大小： | 418K |
| 代理商： | A3250 |
3
A3250-DS
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Allegro MicroSystems, Inc.
Field-Programmable, Chopper-Stabilized, Unipolar Hall-Effect Switches
A3250 and A3251
OPERATING CHARACTERISTICS
valid over operating T
A
and V
CC
, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
ELECTRICAL CHARACTERISTICS
Supply Voltage
1
V
CC
Running mode
4.2
–
24
V
Output Saturation Voltage
V
OUT(sat)
I
OUT
= 20 mA; Switch state = ON
–
175
400
mV
Output Leakage Current
I
OFF
V
OUT
= 24 V; Switch state = OFF
–
–
10
μA
Supply Current
I
CC(off)
A3250; B < B
RP
; V
OUT
= HIGH
–
4.0
7.0
mA
A3251; B > B
OP
; V
OUT
= HIGH
–
4.0
7.0
mA
I
CC(on)
A3250; B > B
OP
; V
OUT
= LOW
–
6.0
10.0
mA
A3251; B < B
RP
; V
OUT
= LOW
R
LOAD
= 820
, C
LOAD
= 10 pF
R
LOAD
= 820
, C
LOAD
= 10 pF
–
6.0
10.0
mA
Output Rise Time
t
r
t
f
–
–
5.0
μs
Output Fall Time
–
–
5.0
μs
Chopping Frequency
f
C
–
340
–
kHz
Power-Up Time
t
on
V
OUT
= HIGH
–
20
50
μs
Output Current Limit
1,2
I
OUT(lim)
Short-circuit protection
60
90
120
mA
Power-On State
POS
A3250; B < B
RP
, t > t
on
–
HIGH
–
mV
A3251; B < B
RP
, t > t
on
–
LOW
–
mV
MAGNETIC CHARACTERISTICS
Initial Operate Point
B
OP
–20
13
50
G
Temperature Drift of B
OP
B
OP
B
OP
≤
500 gauss
–35
–
35
G
Hysteresis (B
OP
– B
RP
)
B
hys
Package T
A
range = J
5.0
18
35
G
Package T
A
range = L
5.0
13
35
G
PROGRAMMING CHARACTERISTICS
Programmable B
OP
Values
3
B
OP(prog)
50
–
≥
350
G
Number of Programming Bits
–
Switchpoint set
–
6
–
Bit
Programming lock
–
1
–
Bit
Resolution
B
RES
–
7.0
–
G
TRANSIENT PROTECTION CHARACTERISTICS
Supply Zener Voltage
V
Z
28
–
–
V
Supply Zener Current
I
Z
V
CC
= 28 V
–
–
13
mA
Reverse Battery Current
I
RCC
V
RCC
= –18 V, T
J
< T
J(max)
–
–
–5.0
mA
1
Do not exceed TJ(max): Additional information on power derating is provided in the applications section.
2
Short-circuit protection is not intended for continuous operation; permanent damage may result.
3
Device can be used below 50 G but is not guaranteed to be a unipolar switch. It is the responsibility of the programmer to verify that the desired
switchpoint has been achieved.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| A3250_06 | 制造商:ALLEGRO 制造商全稱:Allegro MicroSystems 功能描述:Field-Programmable, Chopper-Stabilized Unipolar Hall-Effect Switches |
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