Datasheet

Automotive Grade, Fully Integrated, Hall Effect-Based Linear Current Sensor IC
with 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor
ACS714
12
Allegro MicroSystems, LLC
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
www.allegromicro.com
Characteristic Performance
I
P
= 50 A, unless otherwise specified
–40
25
150
T
A
(°C)
–40
25
125
T
A
(°C)
I
P
= 0 A
I
P
= 0 A
V
CC
= 5 V
V
CC
= 5 V
V
CC
= 5 V; I
P
= 0 A,
After excursion to 20 A
V
CC
= 5 V
Mean Supply Current versus Ambient Temperature
Sensitivity versus Sensed Current
45.00
44.00
43.00
42.00
41.00
40.00
39.00
38.00
37.00
36.00
35.00
Sens (mV/A)
Ip (A)
T
A
(°C)
T
A
(°C)
Mean I
CC
(mA)
9.8
9.7
9.6
9.5
9.4
9.3
9.2
9.1
9.0
8.9
-50-250 255075 125100 150
Supply Current versus Supply Voltage
10.2
10.0
9.8
9.6
9.4
9.2
9.0
V
CC
(V)
I
CC
(mA)
Nonlinearity versus Ambient Temperature
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
–50 0–25 25 50
12575 100 150
E
LIN
(%)
T
A
(°C)
Mean Total Output Error versus Ambient Temperature
8
6
4
2
0
–2
–4
–6
–8
–50 0–25 25 50
12575 100 150
E
TOT
(%)
I
P
(A)
Output Voltage versus Sensed Current
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
-40 40-30 30-20 20-10 100 -40 40-30 30-20 20-10 100
V
IOUT
(V)
4.5 4.6 4.84.7 4.9
5.0 5.35.15.2 5.45.5
39.10
39.05
39.00
38.95
38.90
38.85
38.80
Sens (mV/A)
T
A
(°C)
Sensitivity versus Ambient Temperature
–50 0–25 25 50
12575 100 150
T
A
(°C)
I
OM
(mA)
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
–4.0
–4.5
–5.0
-50 -25 0 25 50 75 125100 150
Magnetic Offset versus Ambient Temperature
T
A
(°C)
V
IOUT(Q)
(mV)
2526
2523
2520
2517
2514
2511
2508
2505
2502
2499
2496
2493
2490
2487
-50 -25 0 25 50 75 125100 150
T
A
(°C)
I
OUT(Q)
(A)
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0
–0.10
–0.20
–0.30
-50 -25 0 25 50 75 125100 150
0 A Output Voltage versus Ambient Temperature 0 A Output Voltage Current versus Ambient Temperature