ACS722KMA Просмотр технического описания (PDF) - Allegro MicroSystems
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ACS722KMA
Allegro MicroSystems
ACS722KMA Datasheet PDF : 17 Pages
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ACS722KMA
High Accuracy, Hall-effect Based Current Sensor
IC in High Isolation SOIC16 Package
xKMATR-40AB PERFORMANCE CHARACTERISTICS: TA Range K, valid at TA = – 40°C to 125°C, VCC = 3.3 V, unless
otherwise specified
Characteristic
Symbol
Test Conditions
Min. Typ.1 Max. Units
Nominal Performance
Current Sensing Range
Sensitivity
Zero Current Output Voltage
IPR
Sens
VIOUT(Q)
IPR(min) < IP < IPR(max)
Bidirectional; IP = 0 A
–40
–
40
A
–
33
–
mV/A
–
VCC x
0.5
–
V
Accuracy Performance
Total Output Error2
ETOT
IP = IPR(max), TA = 25°C to 125°C
IP = IPR(max), TA = –40°C to 25°C
Total Output Error Components 3: ETOT = ESENS + 100 × VOE/(Sens × IP)
Sensitivity Error
ESENS
TA = 25°C to 125°C; measured at IP = IPR(max)
TA = –40°C to 25°C; ; measured at IP = IPR(max)
Offset Voltage4
VOE
IP = 0 A; TA = 25°C to 125°C
IP = 0 A; TA = -40°C to 25°C
Lifetime Drift Characteristics
–2 ±1.25
2
%
–
±2
–
%
–1.5 ±1.2
1.5
%
–
±1.75
–
%
–10
±3
10
mV
–
±5
–
mV
Sensitivity Error Lifetime Drift
Total Output Error Lifetime
Drift
Esens_drift
Etot_drift
–
±1
–
%
–
±1
–
%
1 Typical values with +/- are 3 sigma values.
2 Percentage of IP , with IP = IPR(max)
3 A single part will not have both the maximum/minimum sensitivity error and maximum/minimum offset voltage, as that would violate the maximum/minimum total output
error specification. Also, 3 sigma distribution values are combined by taking the square root of the sum of the squares. See Application Information section.
4 Offset Voltage does not incorporate any error due to external magnetic fields. See section: Impact of External Magnetic Fields.
Allegro MicroSystems, LLC
8
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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