A3212
MICROPOWER,
ULTRA-SENSITIVE
HALL-EFFECT SWITCH
ELECTRICAL CHARACTERISTICS over operating voltage and temperature range (unless
otherwise specified).
Limits
Characteristic
Supply Voltage Range
Output Leakage Current
Output On Voltage
Awake Time
Period
Duty Cycle
Chopping Frequency
Supply Current
Symbol
V
DD
I
OFF
V
OUT
t
awake
t
period
d.c.
f
C
I
DD(EN)
I
DD(DIS)
I
DD(AVG)
Chip awake (enabled)
Chip asleep (disabled)
V
DD
= 2.75 V
V
DD
= 3.5 V
Test Conditions
Operating
1
V
OUT
= 3.5 V, B
RPN
< B < B
RPS
I
OUT
= 1 mA, V
DD
= 2.75 V
Min.
2.5
–
–
–
–
–
–
–
–
–
–
Typ.
2.75
<1.0
100
45
45
0.1
340
–
–
5.1
6.7
Max.
3.5
1.0
300
90
90
–
–
2.0
8.0
10
10
Units
V
µA
mV
µs
ms
%
kHz
mA
µA
µA
µA
NOTES: 1. Operate and release points will vary with supply voltage.
2. B
OPx
= operate point (output turns on); B
RPx
= release point (output turns off).
3. Typical Data is at T
A
= +25°C and V
DD
= 2.75 V and is for design information only.
MAGNETIC CHARACTERISTICS over operating voltage and temperature range (unless
otherwise specified).
Limits
Characteristic
Operate Points
Symbol
B
OPS
B
OPN
Release Points
B
RPS
B
RPN
Hysteresis
B
hys
Test Conditions
South pole to branded side
North pole to branded side
South pole to branded side
North pole to branded side
|B
OPx
- B
RPx
|
Min.
–
-55
10
–
–
Typ.
37
-40
31
-34
5.9
Max.
55
–
–
-10
–
Units
G
G
G
G
G
NOTES: 1. Negative flux densities are defined as less than zero (algebraic convention), i.e., -50 G is less than +10 G.
2. B
OPx
= operate point (output turns on); B
RPx
= release point (output turns off).
3. Typical Data is at T
A
= +25°C and V
DD
= 2.75 V and is for design information only.
4. 1 gauss (G) is exactly equal to 0.1 millitesla (mT).
4
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
