Automotive Grade, Fully Integrated, Hall Effect-Based Linear Current Sensor
with 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor
ACS714
Characteristic Performance
IP = 20 A, unless otherwise specified
Mean Supply Current versus Ambient Temperature
Supply Current versus Supply Voltage
9.7
9.6
9.5
9.4
9.3
9.2
9.1
10.4
10.2
10.0
9.8
VCC = 5 V
VCC = 5 V
9.6
9.4
9.2
9.0
4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5
-50 -25
0
25
50
75 100 125 150
VCC (V)
TA (°C)
Magnetic Offset versus Ambient Temperature
0
Nonlinearity versus Ambient Temperature
0.35
–0.5
0.30
0.25
0.20
0.15
0.10
0.05
0
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
–4.0
–4.5
–5.0
VCC = 5 V; IP = 0 A,
After excursion to 20 A
–50
–25
0
25
50
75
100
125
150
-50 -25
0
25
50
75 100 125 150
TA (°C)
TA (°C)
Mean Total Output Error versus Ambient Temperature
Sensitivity versus Ambient Temperature
8
100.8
100.6
100.4
100.2
100.0
99.8
6
4
2
0
–2
–4
–6
–8
99.6
99.4
99.2
99.0
–50
–25
0
25
50
75
100
125
150
–50
–25
0
25
50
75
100
125
150
TA (°C)
TA (°C)
Output Voltage versus Sensed Current
Sensitivity versus Sensed Current
110.00
108.00
106.00
104.00
102.00
100.00
98.00
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
TA (°C)
–40
25
85
150
VCC = 5 V
TA (°C)
–40
–20
25
85
125
96.00
94.00
92.00
90.00
–25 –20 –15 –10 –5
0
5
10 15 20 25
–25 –20 –15 –10 –5
0
5
10 15 20 25
Ip (A)
IP (A)
0 A Output Voltage versus Ambient Temperature
0 A Output Voltage Current versus Ambient Temperature
0.25
2525
2520
2515
0.20
0.15
IP = 0 A
2510
2505
2500
2495
2490
2485
IP = 0 A
0.10
0.05
0
–0.05
–0.10
–0.15
-50 -25
0
25
50
TA (°C)
75 100 125 150
-50 -25
0
25
50
75 100 125 150
TA (°C)
Allegro MicroSystems, Inc.
9
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
