ACS772 datasheet(13/41 Pages) ALLEGRO

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High Accuracy, Hall-Effect-Based, 200 kHz Bandwidth,

Galvanically Isolated Current Sensor IC with 100 µΩ Current Conductor

ACS772

Allegro MicroSystems, LLC

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A.

www.allegromicro.com

X200B PERFORMANCE CHARACTERISTICS: TA = –40°C to 150°C [1], VCC= 5 V, unless otherwise specified

Characteristic

Symbol

Test Conditions

Min.

Typ. [2]

Max.

Unit

NOMINAL PERFORMANCE

Current Sensing Range

IPR

–200

–

200

Sensitivity

Sens

IPR(min) < IP < IPR(max)

–

10 ×

VCC / 5

–

mV/A

Zero Current Output Voltage

VIOUT(Q)

Bidirectional; IP = 0 A

–

VCC / 2

–

ACCURACY PERFORMANCE

Noise

TA = 25°C, CL = 1 nF

–

5.1

–

mVp-p

TA = 25°C, CL = 1 nF

–

0.85

–

mVRMS

Sensitivity Error

ESens

Full scale of IP, TA = 25°C

–1

±0.5

Full scale of IP, TA = 25°C to 150°C

–1.25

±0.7

1.25

Full scale of IP, TA = –40°C to 25°C

–3.5

±1.5

3.5

Electrical Offset Error

VOE(TA)

IP = 0 A, TA = 25°C

–8

±4

VOE(TA)HT

IP = 0 A, TA = 25°C to 150°C

–8

±4

VOE(TA)LT

IP = 0 A, TA = –40°C to 25°C

–20

±6

Magnetic Offset Error

IERROM

IP = 0 A, TA = 25°C, after excursion of IPR(max)

–

380

400

Total Output Error

ETOT(HT)

Full scale of IP, TA = 25°C to 150°C

–1.5

±0.7

1.5

ETOT(LT)

Full scale of IP, TA = –40°C to 25°C

–3.5

±1.5

3.5

LIFETIME ACCURACY CHARACTERISTICS [3]

Sensitivity Error Including Lifetime

ESens(LIFE)(HT) TA = 25°C to 150°C

–2.1

±1.6

2.1

ESens(LIFE)(LT) TA = –40°C to 25°C

–3.5

±2.5

3.5

Total Output Error Including Lifetime

ETOT(LIFE)(HT) TA = 25°C to 150°C

–2.1

±1.7

2.1

ETOT(LIFE)(LT) TA = –40°C to 25°C

–3.5

±2.6

3.5

Electric Offset Error Including Lifetime

EOFF(LIFE)(HT) TA = 25°C to 150°C

–10

±7

EOFF(LIFE)(LT) TA = –40°C to 25°C

–20

±8.9

[1]

All ACS772 devices are production tested and guaranteed to TA = 150°C, provided the Maximum Junction Temperature, TJ(MAX), is not exceeded. See Absolute Maximum

Ratings and Thermal Application section of this datasheet for more information.

[2]

Typical values are ±3 sigma values.

[3]

Min/max limits are derived from AEC-Q100 Grade 1 testing.

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