ACS717 查看數據表（PDF） - Allegro MicroSystems
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ACS717 Datasheet PDF : 14 Pages
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ACS717
High Isolation Linear Current Sensor IC with
850 µΩ Current Conductor
xKMATR-20B PERFORMANCE CHARACTERISTICS: valid at TA = – 40°C to 125°C, VCC = 3.3 V, unless otherwise speci-
fied
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
-20
-
-
66
-
Vcc x
0.5
20
A
-
mV/A
-
V
Accuracy Performance
IP = IPR(max); TA = 25°C
Total Output Error2
ETOT
IP = IPR(max); TA = 85°C
IP =IPR(max); TA = 125°C
IP = IPR(max); TA = -40°C
Total Output Error Components3 ETOT = ESENS + 100 × VOE/(Sens x IP)
TA = 25°C; measured at IP = IPR(max)
Sensitivity Error
ESENS
TA = 85°C; measured at IP = IPR(max)
TA = 125°C; measured at IP = IPR(max)
TA = -40°C; measured at IP = IPR(max)
TA = 25°C; IP = 0 A;
Offset Voltage4
VOE
TA = 85°C; IP = 0 A;
TA = 125°C; IP = 0 A;
TA = -40°C; IP = 0 A
Lifetime Drift Characteristics
-5
±2
5
-
±2
-
%
-
±2
-
-
2 ±2
-
-4
±2
4
-
±2
-
%
-
±2
-
-
1.5 ±2
-
-40
±5
40
-
±10
-
mV
-
-5 ±15
-
-
5 ±10
-
Sensitivity Error Lifetime Drift
ESENS_
DRIFT
–
±2
–
%
Total Output Error Lifetime Drift ETOT_DRIFT
–
±2
–
%
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
6
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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