ACS716 データシートの表示（PDF） - Allegro MicroSystems

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ACS716

120 kHz Bandwidth, High Voltage Isolation Current Sensor with Integrated Overcurrent Detection

Allegro MicroSystems 

ACS716

120 kHz Bandwidth, High Voltage Isolation

Current Sensor with Integrated Overcurrent Detection

PERFORMANCE CHARACTERISTICS, TA Range K, valid at TA = –40°C to 125°C, VCC = 3.3 V; unless otherwise specified

Characteristic

Symbol

Test Conditions

Min. Typ. Max.

X25CB CHARACTERISTICS

Optimized Accuracy Range1

IPOA

–25

–

25

Linear Sensing Range

IR

–75

–

75

Noise2

VNOISE(rms) TA = 25°C, Sens = 18.5 mV/A, Cf = 0, CLOAD = 4.7 nF, RLOAD open

–

0.5

–

IP = 25 A, TA = 25°C

–

18.6

–

Sensitivity3

Sens IP = 25 A, TA = 25°C to 125°C

–

18.5

–

IP = 25 A, TA = –40°C to 25°C

–

18.9

–

Electrical Offset Voltage

Variation Relative to

VOUT(QBI)4

IP = 0 A, TA = 25°C

VOE

IP = 0 A, TA = 25°C to 125°C

IP = 0 A, TA = –40°C to 25°C

–

±5

–

–

±13

–

–

±18

–

Total Output Error5

ETOT

Over full scale of IPOA, IP applied for 5 ms, TA = 25°C to 125°C

Over full scale of IPOA, IP applied for 5 ms, TA = –40°C to 25°C

–

±2.9

–

–

±5.2

–

Units

A

A

mV

mV/A

mV/A

mV/A

mV

mV

mV

%

%

1Although the device is accurate over the entire linear range, the device is programmed for maximum accuracy over the range defined by IPOA.

The reason for this is that in many applications, such as motor control, the start-up current of the motor is approximately three times higher than the

running current.

2Vpk-pk noise (6 sigma noise) is equal to 6 × VNOISE(rms). Lower noise levels than this can be achieved by using Cf for applications requiring narrower

bandwidth. See Characteristic Performance page for graphs of noise versus Cf and bandwidth versus Cf.

3This parameter can drift by as much as 2.4% over the lifetime of this product.

4This parameter can drift by as much as 13 mV over the lifetime of this product.

5This parameter can drift by as much as 2.5% over the lifetime of this product.

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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