A3211 Datasheet, PDF (4/13 Pages) Allegro MicroSystems – Micropower, Ultra-sensitive Hall-effect Switches

A3211 and
A3212
Micropower, Ultrasensitive
Hall-Effect Switches
ELECTRICAL CHARACTERISTICS over operating voltage and temperature range (unless otherwise specified).
Characteristic
Symbol
Test Conditions
Limits
Min. Typ.* Max.
Units
Supply Voltage Range
Output Leakage Current
Output On Voltage
Awake Time
Period
Duty Cycle
V_DD
I_OFF
V_OUT
t_awake
t_period
d.c.
Operating
V_OUT = 3.5 V, Output off
I_OUT = 1 mA, V_DD = 2.75 V
2.5
2.75
3.5
V
–
<1.0
1.0
μA
–
100
300
mV
–
45
90
μs
–
45
90
ms
–
0.1
–
%
Chopping Frequency
f_C
I_DD(EN)
Chip awake (enabled)
Supply Current
I_DD(DIS)
I_DD(AVG)
Chip asleep (disabled)
V_DD = 2.75 V
V_DD = 3.5 V
* Typical data is at T_A = 25°C and V_DD = 2.75 V, and is for design information only.
–
340
–
kHz
–
–
2.0
mA
–
–
8.0
μA
–
5.1
10
μA
–
6.7
10
μA
Allegro MicroSystems, Inc.
4
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com