ACS733 datasheet(13/37 Pages) ALLEGRO

13 / 37 page

1 MHz Bandwidth, Galvanically Isolated

Current Sensor IC in SOIC-16 Package

ACS732 and

ACS733

Allegro MicroSystems, LLC

955 Perimeter Road

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

www.allegromicro.com

ACS733KLATR-20AB PERFORMANCE CHARACTERISTICS

: Valid at TA = –40°C to 125°C, VCC= 3.3 V, CBYPASS = 0.1 µF,

unless otherwise specified

Characteristic

Symbol

Test Conditions

Min.

Typ. [1]

Max.

Unit

NOMINAL PERFORMANCE

Current Sensing Range

IPR

–20

–

Sensitivity

Sens

–

mV/A

Zero Current Output Voltage

VIOUT(Q)

–

0.5 × VCC

–

TOTAL OUTPUT ERROR COMPONENTS [2] ETOT = ESENS + 100 × VOE / (Sens × IP)

Total Output Error [3]

ETOT

IP = IPR(max), TA = 25°C

–4.5

±1.7

4.5

IP = IPR(max), TA = 125°C

–3

±1.25

IP = IPR(max), TA = –40°C

–10

±5

Sensitivity Error

ESENS

IP = IPR(max), TA = 25°C

–1.5

±1

1.5

IP = IPR(max), TA = 125°C

–1.5

±0.8

1.5

IP = IPR(max), TA = –40°C

–3

±2

Offset Voltage Error

VOE

IP = 0 A, TA = 25°C

–55

±21

IP = 0 A, TA = 125°C

–25

±10

IP = 0 A, TA = –40°C

–120

±80

120

LIFETIME DRIFT CHARACTERISTICS [4]

Total Output Error Including Lifetime Drift

ETOT(DRIFT)

IP = IPR(max), TA = 25°C to 125°C

–5.5

±2.9

5.5

IP = IPR(max), TA = –40°C to 25°C

–10

±6

Sensitivity Error Including Lifetime Drift

ESENS(DRIFT)

IP = IPR(max), TA = 25°C to 125°C

–2.7

±1.2

2.7

IP = IPR(max), TA = –40°C to 25°C

–3

±2.2

Offset Voltage Error Including Lifetime Drift

VOE(DRIFT)

TA = 25°C to 125°C

–67

±36

TA = –40°C to 25°C

–120

±115

120

[1]

Typical values with ± are mean ±3 sigma values, except for lifetime drift which are the average value including drift after AEC-Q100 qualification.

[2]

A single part will not have both the maximum sensitivity error and the maximum offset voltage, as that would violate the maximum/minimum total output error

specification. For total error, 3 sigma distribution values for offset and sensitivity may be combined by taking the square root of the sum of the squares. See characteristic

performance data plots for temperature drift performance.

[3]

Percentage of IP, with IP = IPR(MAX).

[4]

Lifetime drift characteristics are based on AEC-Q100 qualification results.

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