A3212 Allegro MicroSystems, A3212 Datasheet - Page 4

• Manufacturer Part Number: A3212
• Description: MICROPOWER/ ULTRA-SENSITIVE HALL-EF FECT SWITCH
• Manufacturer: Allegro MicroSystems

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