Data Sheet

Fully Integrated, Hall Effect-Based Linear Current Sensor IC
with
2.1 kVRMS Isolation and a Low-Resistance Current Conductor
ACS712
6
Allegro MicroSystems, LLC
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
–40
25
85
150
T
A
(°C)
–40
25
85
150
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
Mean Supply Current versus Ambient Temperature
Sensitivity versus Sensed Current
200.00
190.00
180.00
170.00
160.00
150.00
140.00
130.00
120.00
110.00
100.00
Sens (mV/A)
186.5
186.0
185.5
185.0
184.5
184.0
183.5
183.0
182.5
182.0
181.5
181.0
Sens (mV/A)
Ip (A)
-6 -4 -2 0 2 4 6
T
A
(°C)
T
A
(°C) T
A
(°C)
Mean I
CC
(mA)
10.30
10.25
10.20
10.15
10.10
10.05
10.00
9.95
9.90
9.85
9.80
9.75
-50 -25 0 25 50 75 125100 150
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
Supply Current versus Supply Voltage
10.9
10.8
10.7
10.6
10.5
10.4
10.3
10.2
10.1
10.0
4.5 4.6 4.84.7 4.9
5.0 5.35.1 5.2 5.4 5.5
V
CC
(V)
I
CC
(mA)
T
A
(°C)
V
IOUT(Q)
(mV)
2520
2515
2510
2505
2500
2495
2490
2485
-50 -25 0 25 50 75 125100 150
T
A
(°C)
I
OUT(Q)
(A)
0.20
0.15
0.10
0.05
0
–0.05
–0.10
–0.15
-50 -25 0 25 50 75 125100 150
Nonlinearity versus Ambient Temperature
0.6
0.5
0.4
0.3
0.2
0.1
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
(%)
T
A
(°C)
Sensitivity versus Ambient Temperature
–50 0–25 25 50
12575 100 150
I
P
(A)
Output Voltage versus Sensed Current
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–7 –6 –5 –4 –3 –2
–1 0 1 2 3 4 5 6 7
V
IOUT
(V)
Magnetic Offset versus Ambient Temperature
V
CC
= 5 V
0 A Output Voltage versus Ambient Temperature 0 A Output Voltage Current versus Ambient Temperature
Characteristic Performance
I
P
= 5 A, unless otherwise specified