3250
PROGRAMMABLE, CHOPPER-
STABILIZED, PRECISION,
HALL-EFFECT SWITCH
ELECTRICAL CHARACTERISTICS over operating voltage and temperature range (unless
otherwise noted).
Limits
Characteristic
Supply Voltage
Power-On State
Symbol
V
CC
POS
Test Conditions
Operating
After programming, V
CC
= 0
¡
5 V:
A3250x, B < B
OP
A3251x, B < B
RP
Output on, I
OUT
= 20 mA
Output on, V
OUT
= 12 V
Output off, V
OUT
= 24 V
Before programming, output off
Before programming, output on
Reverse Supply Current
Power-On Delay
Output Rise Time
Output Fall Time
Clock Frequency
Zener Voltage
Zener Impedance
I
RCC
t
on
t
r
t
f
f
C
V
Z
z
z
I
ZT
= 100
µA,
T
A
= 25°C
I
ZT
= 10 mA, T
A
= 25°C
V
RCC
= -30 V
V
CC
> 5 V
R
L
= 820
Ω,
C
L
= 20 pF
R
L
= 820
Ω,
C
L
= 20 pF
Min.
4.25
HIGH
LOW
—
65
—
—
—
—
—
—
—
—
27
—
Typ.
—
HIGH
LOW
175
80
—
3.0
4.0
—
20
200
100
340
32
50
Max.
26.5
HIGH
LOW
400
95
10
7.0
8.0
-5.0
50
—
—
—
37
—
Units
V
—
—
mV
mA
µA
mA
mA
mA
µs
ns
ns
kHz
V
Ω
Low Output Voltage
Output Current Limit
Output Leakage Current
Supply Current
V
OUT(SAT)
I
OUTM
I
OFF
I
CC
NOTE: Typical data is at V
CC
= 5 V and T
A
= +25°C and is for design information only.
MAGNETIC CHARACTERISTICS over operating supply voltage and temperature range.
Limits
Characteristic
A3250x Operate Point
(output turns on), B
OP
A3251x Release Point
(output turns off), B
RP
Hysteresis
∆B
xP
B
hys
Symbol
B
xP
Test Conditions
Programmable offset range
Initial (before programming)
Resolution
After programming, B
xP
≤
500 G
After programming, |B
OP
— B |
RP
Min.
500
20
—
-35
5.0
Typ.
670
—
10
—
—
Max.
850
—
—
+35
35
Units
G
G
G
G
G
NOTE: Typical data is at V
CC
= 5 V and T
A
= +25°C and is for design information only.
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