ACS722 查看數據表（PDF） - Allegro MicroSystems

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ACS722

High Accuracy, Galvanically Isolated Current Sensor IC With Small Footprint SOIC8 Package

Allegro MicroSystems 

ACS722

High Accuracy, Galvanically Isolated Current Sensor IC

With Small Footprint SOIC8 Package

xLLCTR-20AU PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 3.3 V, unless

otherwise specif ied

Characteristic

Symbol

Test Conditions

Min. Typ.

Max. Units

Nominal Performance

Current Sensing Range

Sensitivity

Zero Current Output Voltage

IPR

Sens

VIOUT(Q)

IPR(min) < IP < IPR(max)

Unidirectional; IP = 0 A

0

–

20

A

–

132

–

mV/A

–

VCC x

0.1

–

V

Accuracy Performance

Sensitivity Error

Esens

Offset Voltage1

VOE

Total Output Error2

Lifetime Drift Characteristics

ETOT

TA = 25°C to 150°C; measured at IP = IPR(max)

TA = –40°C to 25°C; ; measured at IP = IPR(max)

IP = 0 A; TA = 25°C to 150°C

IP = 0 A; TA = -40°C to 25°C

IP = IPR(max), TA = 25°C to 150°C

IP = IPR(max), TA = –40°C to 25°C

–1.5

–

1.5

%

–

±2

–

%

–10

–

10

mV

–

±15

–

mV

–2

–

2

%

–

±3

–

%

Sensitivity Error Lifetime Drift

Total Output Error Lifetime

Drift

Esens_drift

Etot_drift

–

±2

–

%

–

±2

–

%

1 Offset Voltage does not incorporate any error due to external magnetic fields. See section: Impact of External Magnetic Fields.

2 Percentage of IP , with IP = IPR(max)

xLLCTR-20AB PERFORMANCE CHARACTERISTICS: TA Range L, valid at TA = – 40°C to 150°C, VCC = 3.3 V, unless

otherwise specif ied

Characteristic

Symbol

Test Conditions

Min. Typ.

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

–

20

A

–

66

–

mV/A

–

VCC x

0.5

–

V

Accuracy Performance

Sensitivity Error

Esens

Offset Voltage1

VOE

Total Output Error2

Lifetime Drift Characteristics

ETOT

TA = 25°C to 150°C; measured at IP = IPR(max)

TA = –40°C to 25°C; ; measured at IP = IPR(max)

IP = 0 A; TA = 25°C to 150°C

IP = 0 A; TA = -40°C to 25°C

IP = IPR(max), TA = 25°C to 150°C

IP = IPR(max), TA = –40°C to 25°C

–1.5

–

1.5

%

–

±2

–

%

–10

–

10

mV

–

±15

–

mV

–2

–

2

%

–

±3

–

%

Sensitivity Error Lifetime Drift

Total Output Error Lifetime

Drift

Esens_drift

Etot_drift

–

±2

–

%

–

±2

–

%

1 Offset Voltage does not incorporate any error due to external magnetic fields. See section: Impact of External Magnetic Fields.

2 Percentage of IP , with IP = IPR(max)

Allegro MicroSystems, LLC

9

115 Northeast Cutoff

Worcester, Massachusetts 01615-0036 U.S.A.

1.508.853.5000; www.allegromicro.com

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