Automotive Grade, Fully Integrated, Hall Effect-Based Linear Current Sensor
with 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor
ACS714
x20A PERFORMANCE CHARACTERISTICS over Range E: TA = –40°C to 85°C1, CF = 1 nF, and VCC = 5 V, unless otherwise specified
Characteristic
Optimized Accuracy Range
Sensitivity
Symbol
Test Conditions
Min.
–20
96
Typ.
Max.
Units
IP
–
20
A
Sens
Over full range of IP, TA = 25°C
100
104
mV/A
Peak-to-peak, TA = 25°C, 100 mV/A programmed Sensitivity,
CF = 47 nF, COUT = open, 2 kHz bandwidth
Noise
VNOISE(PP)
–
11
–
mV
TA = –40°C to 25°C
TA = 25°C to 150°C
TA = –40°C to 25°C
TA = 25°C to 150°C
IP = 0 A
–
–
–0.34
–0.07
0.017
–0.004
–
–
–
mV/°C
mV/°C
mV/A/°C
mV/A/°C
mV
Zero Current Output Slope
∆IOUT(Q)
–
–
Sensitivity Slope
∆Sens
–
–
Electrical Offset Voltage
Total Output Error2
VOE
–30
–
30
–
ETOT
IP =±20 A, TA = 25°C
±1.5
%
1Device may be operated at higher primary current levels, IP, and ambient temperatures, TA, provided that the Maximum Junction Temperature,
TJ(max), is not exceeded.
2Percentage of IP, with IP = 20 A. Output filtered.
x20A PERFORMANCE CHARACTERISTICS over Range L: TA = –40°C to 150°C1, CF = 1 nF, and VCC = 5 V, unless otherwise specified
Characteristic
Symbol
Test Conditions
Min.
–20
–
Typ.
Max.
Units
Optimized Accuracy Range
IP
–
20
A
Over full range of IP, TA = 25°C
100
–
–
mV/A
mV/A
Sensitivity
Sens
Over full range of IP, TA = –40°C to 150°C
94
104
Peak-to-peak, TA = 25°C, 100 mV/A programmed Sensitivity,
CF = 47 nF, COUT = open, 2 kHz bandwidth
Noise
VNOISE(PP)
–
11
–
mV
TA = –40°C to 25°C
TA = 25°C to 150°C
TA = –40°C to 25°C
TA = 25°C to 150°C
IP = 0 A
–
–
–0.34
–0.07
0.017
–0.004
–
–
–
mV/°C
mV/°C
mV/A/°C
mV/A/°C
mV
Zero Current Output Slope
∆IOUT(Q)
–
–
Sensitivity Slope
∆Sens
VOE
–
–
Electrical Offset Voltage
Total Output Error2
–40
–
40
–
IP =±20 A, TA = 25°C
±1.5
%
ETOT
IP =±20 A, TA = –40°C to 150°C
–5
–
5
%
1Device may be operated at higher primary current levels, IP, and ambient temperatures, TA, provided that the Maximum Junction Temperature,
TJ(max), is not exceeded.
2Percentage of IP, with IP = 20 A. Output filtered.
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
6
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
