ACS712 View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
Manufacturer
ACS712 Datasheet PDF : 14 Pages
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ACS712
Fully Integrated, Hall Effect-Based Linear Current Sensor IC
with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor
Characteristic Performance
IP = 20 A, unless otherwise specified
Mean Supply Current versus Ambient Temperature
9.7
Supply Current versus Supply Voltage
10.4
9.6
9.5
9.4
VCC = 5 V
9.3
9.2
10.2
10.0
9.8
9.6
9.4
9.2
VCC = 5 V
9.1
-50 -25 0 25 50 75 100 125 150
TA (°C)
Magnetic Offset versus Ambient Temperature
0
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
VCC = 5 V; IP = 0 A,
After excursion to 20 A
–3.5
–4.0
–4.5
–5.0
-50 -25 0 25 50 75 100 125 150
TA (°C)
Mean Total Output Error versus Ambient Temperature
8
6
4
2
0
–2
–4
–6
–8
–50 –25 0
25 50 75 100 125 150
TA (°C)
Output Voltage versus Sensed Current
5.0
4.5
4.0
3.5
VCC = 5 V
3.0
2.5
TA (°C)
2.0
–40
–20
1.5
25
1.0
85
0.5
125
0
–25 –20 –15 –10 –5 0 5 10 15 20 25
IP (A)
0 A Output Voltage versus Ambient Temperature
2525
2520
2515
2510
2505
IP = 0 A
2500
2495
2490
2485
-50 -25 0
25 50 75 100 125 150
TA (°C)
9.0
4.5 4.6 4.7 4.8 4.9 5.0 5.1 5.2 5.3 5.4 5.5
VCC (V)
Nonlinearity versus Ambient Temperature
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
–50 –25 0
25 50 75 100 125 150
TA (°C)
Sensitivity versus Ambient Temperature
100.8
100.6
100.4
100.2
100.0
99.8
99.6
99.4
99.2
99.0
–50 –25 0
25 50 75 100 125 150
TA (°C)
110.00
108.00
106.00
104.00
102.00
Sensitivity versus Sensed Current
TA (°C)
–40
25
85
150
100.00
98.00
96.00
94.00
92.00
90.00
–25 –20 –15 –10 –5 0 5
Ip (A)
10 15 20 25
0 A Output Voltage Current versus Ambient Temperature
0.25
0.20
0.15
0.10
IP = 0 A
0.05
0
–0.05
–0.10
–0.15
-50 -25 0 25 50 75 100 125 150
TA (°C)
Allegro MicroSystems, Inc.
7
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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