ACS712 View Datasheet(PDF) - Allegro MicroSystems

Part Name

Description

MFG CO.

ACS712

Fully Integrated, Hall Effect-Based Linear Current Sensor IC with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor

Allegro MicroSystems 

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ACS712

Fully Integrated, Hall Effect-Based Linear Current Sensor IC

with 2.1 kVRMS Isolation and a Low-Resistance Current Conductor

x05B PERFORMANCE CHARACTERISTICS1 TA = –40°C to 85°C, CF = 1 nF, and VCC = 5 V, unless otherwise specified

Characteristic

Symbol

Test Conditions

Min. Typ.

Max.

Units

Optimized Accuracy Range

IP

–5

–

5

A

Sensitivity

Sens Over full range of IP, TA = 25°C

180

185

190

mV/A

Noise

VNOISE(PP)

Peak-to-peak, TA = 25°C, 185 mV/A programmed Sensitivity,

CF = 47 nF, COUT = open, 2 kHz bandwidth

–

21

–

mV

Zero Current Output Slope

∆IOUT(Q)

TA = –40°C to 25°C

TA = 25°C to 150°C

–

–0.26

–

–

–0.08

–

mV/°C

mV/°C

Sensitivity Slope

∆Sens

TA = –40°C to 25°C

TA = 25°C to 150°C

–

0.054

–

–

–0.008

–

mV/A/°C

mV/A/°C

Total Output Error2

ETOT IP =±5 A, TA = 25°C

–

±1.5

–

%

1Device may be operated at higher primary current levels, IP, and ambient temperatures, TA, provided that the Maximum Junction Temperature, TJ(max),

is not exceeded.

2Percentage of IP, with IP = 5 A. Output filtered.

x20A PERFORMANCE CHARACTERISTICS1 TA = –40°C to 85°C, CF = 1 nF, and VCC = 5 V, unless otherwise specified

Characteristic

Symbol

Test Conditions

Min. Typ.

Max.

Units

Optimized Accuracy Range

IP

–20

–

20

A

Sensitivity

Sens Over full range of IP, TA = 25°C

96

100

104

mV/A

Noise

VNOISE(PP)

Peak-to-peak, TA = 25°C, 100 mV/A programmed Sensitivity,

CF = 47 nF, COUT = open, 2 kHz bandwidth

–

11

–

mV

Zero Current Output Slope

∆IOUT(Q)

TA = –40°C to 25°C

TA = 25°C to 150°C

–

–0.34

–

–

–0.07

–

mV/°C

mV/°C

Sensitivity Slope

∆Sens

TA = –40°C to 25°C

TA = 25°C to 150°C

–

0.017

–

–

–0.004

–

mV/A/°C

mV/A/°C

Total Output Error2

ETOT IP =±20 A, TA = 25°C

–

±1.5

–

%

1Device may be operated at higher primary current levels, IP, and ambient temperatures, TA, provided that the Maximum Junction Temperature,

TJ(max), is not exceeded.

2Percentage of IP, with IP = 20 A. Output filtered.

x30A PERFORMANCE CHARACTERISTICS1 TA = –40°C to 85°C, CF = 1 nF, and VCC = 5 V, unless otherwise specified

Characteristic

Symbol

Test Conditions

Min. Typ.

Max.

Units

Optimized Accuracy Range

IP

–30

–

30

A

Sensitivity

Sens Over full range of IP, TA = 25°C

63

66

69

mV/A

Noise

VNOISE(PP)

Peak-to-peak, TA = 25°C, 66 mV/A programmed Sensitivity,

CF = 47 nF, COUT = open, 2 kHz bandwidth

–

7

–

mV

Zero Current Output Slope

∆IOUT(Q)

TA = –40°C to 25°C

TA = 25°C to 150°C

–

–0.35

–

–

–0.08

–

mV/°C

mV/°C

Sensitivity Slope

∆Sens

TA = –40°C to 25°C

TA = 25°C to 150°C

–

0.007

–

–

–0.002

–

mV/A/°C

mV/A/°C

Total Output Error2

ETOT IP = ±30 A, TA = 25°C

–

±1.5

–

%

1Device may be operated at higher primary current levels, IP, and ambient temperatures, TA, provided that the Maximum Junction Temperature,

TJ(max), is not exceeded.

2Percentage of IP, with IP = 30 A. Output filtered.

Allegro MicroSystems, Inc.

5

115 Northeast Cutoff

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

1.508.853.5000; www.allegromicro.com

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