Micro Power 3 V Linear Hall Effect Sensor ICs
with Tri-State Output and User Selectable Sleep Mode
A1391, A1392,
A1393, and A1395
4
Allegro MicroSystems, LLC
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
OUTPUT CHARACTERISTICS valid through full operating ambient temperature range, unless otherwise noted
Characteristic Symbol Test Conditions Min. Typ.
1
Max. Units
Linear Output Voltage
Range
V
OUTH
V
CC
= V
CCN
, V
REF
V
CC
–V
REF
– 0.1 – V
V
OUTL
V
CC
= V
CCN
, V
REF
V
CC
– 0.1 – V
Maximum Voltage Applied
to Output
V
OUTMAX
V
SLEEP
< V
INL
––V
CC
+ 0.1 V
Sensitivity
2
Sens
A1391 T
A
= 25°C, V
CC
= V
REF
= V
CCN
– 1.25 – mV/G
A1392 T
A
= 25°C, V
CC
= V
REF
= V
CCN
– 2.50 – mV/G
A1393 T
A
= 25°C, V
CC
= V
REF
= V
CCN
– 5 – mV/G
A1395 T
A
= 25°C, V
CC
= V
REF
= V
CCN
– 10 – mV/G
Quiescent Output V
OUTQ
T
A
= 25°C, B = 0 G – 0.500 × V
REF
–V
Output Resistance
3
R
OUT
f
out
= 1 kHz, V
SLEEP
> V
INH
, active mode – 20 –
f
out
= 1 kHz, V
SLEEP
< V
INL
, sleep mode – 4M –
Output Load Resistance R
L
Output to ground 15 – – k
Output Load Capacitance C
L
Output to ground – – 10 nF
Output Bandwidth BW
–3 dB point, V
OUT
= 1 V
pp
sinusoidal,
V
CC
= V
CCN
– 10 – kHz
Noise
4,5
V
n
1391
C
bypass
= 0.1 F,
BW
externalLPF
= 2 kHz
– 6 12 mV
pp
C
bypass
= 0.1 F, no load – – 20 mV
pp
1392 C
bypass
= 0.1 F, no load – – 40 mV
pp
1393
C
bypass
= 0.1 F,
BW
externalLPF
= 2 kHz
–12 24mV
pp
C
bypass
= 0.1 F, no load – – 40 mV
pp
1395 C
bypass
= 0.1 F, no load – – 80 mV
pp
1
Typical data are for initial design estimations only, and assume optimum manufacturing and application conditions, such as T
A
= 25°C. Performance
may vary for individual units, within the specified maximum and minimum limits.
2
For V
REF
values other than V
REF
= V
CCN
, the sensitivity can be derived from the following equation: K × V
REF
, where K =0.416 for the A1391, K= 0.823
for the A1392, K = 1.664 for the A1393, and K = 3.328 for the A1395.
3
f
OUT
is the output signal frequency
4
Noise specification includes digital and analog noise.
5
Values for BW
externalLPF
do not include any noise resulting from noise on the externally-supplied VREF voltage.
