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Current Sensing Amplifiers for BLDC Motors

Home » Applications & Technologies » Industrial Applications » Brushless DC Motor » Amplifiers - Current Sensing for Brushless DC Motors

Current Sensing  Amplifiers for Brushless DC Motors

Current sensing amplifiers, also known as current-sense or current-shunt amplifiers, measure electrical current. The voltage across a resistor in a current path is directly proportional to that current, per Ohm's law. Thus, measuring current is highly dependent upon the resistance for accuracy. Integrated circuits for current measurement are more efficient, accurate, and are an overall lower cost solution over a discrete current-sensing solution. Learn More


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Texas Instruments ISO124P
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Texas Instruments Isolation Amplifiers Precision Low Cost Isolation Amp
Data Sheet 1,443
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1: $18.91
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25: $15.90
50: $15.04
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Texas Instruments ISO124U
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Texas Instruments Isolation Amplifiers Precision Low Cost Isolation Amp
Data Sheet 1,397
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25: $16.65
50: $15.75
100: View



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Texas Instruments AMC1100DUBR
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595-AMC1100DUBR


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Texas Instruments Isolation Amplifiers 4.25kV PEAK Iso Amp
Data Sheet 3,123
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1: $5.04
10: $4.50
25: $4.05
50: $3.87
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350: $3.33
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Texas Instruments ISO122JP
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Texas Instruments Isolation Amplifiers Precision Low Cost Isolation Amp
Data Sheet 822
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1: $22.23
10: $20.56
25: $18.89
50: $18.45
100: View



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Texas Instruments ISO122P
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Texas Instruments Isolation Amplifiers Precision Low Cost Isolation Amp
Data Sheet 511
In Stock
1: $27.00
10: $24.97
25: $22.95
50: $22.41
100: View



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Maxim Integrated MAX9943AUA+
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Maxim Integrated Precision Amplifiers Precision Op Amp
Page 501

Data Sheet
4,268
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25: $1.14
50: $1.13
100: $1.12
250: $1.06



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Maxim Integrated MAX4372TESA+
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Maxim Integrated Current Sense Amplifiers uPower High-Side Current-Sense Amp
Page 502

Data Sheet
991
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1: $1.51
25: $1.44
50: $1.43
250: $1.35



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Analog Devices ADUM3190ARQZ-RL7
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584-ADUM3190ARQZ-RL7


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ADUM3190ARQZ-RL7

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Analog Devices Isolation Amplifiers 2.5kV High Stability Isolated Error Amp
Page 491

Data Sheet
1,326
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Analog Devices ADUM3190TRQZ-RL7
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584-ADUM3190TRQZ-RL7


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ADUM3190TRQZ-RL7

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Analog Devices Isolation Amplifiers 2.5kV High Stability Isolated Error Amp
Page 491

Data Sheet
941
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Maxim Integrated MAX9643UATA+T
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700-MAX9643UATA+T


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Maxim Integrated Current Sense Amplifiers 60V High-speed Current-sense Amp
Page 502

Data Sheet
1,867
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25: $5.20
50: $3.42
100: $2.67
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Texas Instruments AMC1200BDWV
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AMC1200BDWV

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Texas Instruments Isolation Amplifiers 4kV peak Iso Amp
Data Sheet 763
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1: $6.10
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25: $4.90
50: $4.68
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Texas Instruments AMC1200SDUBR
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595-AMC1200SDUBR


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Texas Instruments Isolation Amplifiers 4kV peak Iso Amp
Page 524

Data Sheet
1,843
In Stock
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10: $5.44
25: $4.90
50: $4.68
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Texas Instruments AMC1200STDUBRQ1
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595-AMC1200STDUBRQ1


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AMC1200STDUBRQ1

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Texas Instruments Isolation Amplifiers Auto Catalog 4kV
Data Sheet 519
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25: $5.29
50: $5.14
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Avago Technologies ACPL-C79A-000E
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Avago Technologies Optically Isolated Amplifiers Precision Iso-Amp
Page 188

Data Sheet
628
In Stock
1: $7.04
10: $6.44
25: $5.69
100: $5.27
250: View



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Texas Instruments ISO124UE4
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Texas Instruments Isolation Amplifiers Precision Low Cost Isolation Amp
Data Sheet

Product Info.
291
In Stock
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1: $19.80
10: $18.00
25: $16.65
50: $15.75
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Texas Instruments ISO122JU
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Texas Instruments Isolation Amplifiers Precision Low Cost Isolation Amp
Data Sheet 87
In Stock
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1: $23.13
10: $21.39
25: $19.66
50: $19.19
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Texas Instruments ISO122U
Enlarge
Texas Instruments Isolation Amplifiers Precision Low Cost Isolation Amp
Data Sheet 306
In Stock
Alternative Packaging
1: $27.90
10: $25.80
25: $23.71
50: $23.15
100: View



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Texas Instruments ISO121G
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Texas Instruments Isolation Amplifiers Prec Lo Cost Iso Amp
Data Sheet 14
In Stock
1: $135.78
5: $127.03
10: $126.85
25: $126.13
50: View



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755-BA3121F-E2


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ROHM Semiconductor Audio Amplifiers AUDIO ISOLATION AMP
Page 449

Data Sheet
2,593
In Stock
Cut Tape
1: $1.46
10: $1.17
100: $0.903
500: $0.798
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2,500: $0.558
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Analog Devices ADUM3190ARQZ
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ADUM3190ARQZ

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Analog Devices Isolation Amplifiers 2.5kV High Stability Isolated Error Amp
Data Sheet 772
In Stock
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1: $2.62
10: $2.34
25: $2.11
50: $1.97
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Analog Devices ADUM3190BRQZ-RL7
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584-ADUM3190BRQZ-RL7


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ADUM3190BRQZ-RL7

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Analog Devices Isolation Amplifiers 2.5kV High Stability Isolated Error Amp
Page 491

Data Sheet
891
In Stock
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Cut Tape
1: $2.88
10: $2.57
25: $2.32
50: $2.17
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1,000: $1.41
2,000: View



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Reel: 1,000
Analog Devices ADUM3190SRQZ-RL7
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584-ADUM3190SRQZ-RL7


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ADUM3190SRQZ-RL7

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Analog Devices Isolation Amplifiers 2.5kV High Stability Isolated Error Amp
Page 491

Data Sheet
666
In Stock
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1: $2.96
10: $2.64
25: $2.38
50: $2.22
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1,000: $1.45
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Texas Instruments AMC1200SDUB
Enlarge
Texas Instruments Isolation Amplifiers 4kV peak Iso Amp
Data Sheet 315
In Stock
Alternative Packaging
1: $6.43
10: $5.79
25: $5.43
50: $5.27
100: View



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Texas Instruments AMC1200BDUBR
Enlarge
Texas Instruments Isolation Amplifiers 4kV peak Iso Amp
Data Sheet 350
In Stock
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Reel
350: $4.03
700: $3.61
1,050: $3.26
1,400: $2.72



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Mult.: 350
Reel: 350
ROHM Semiconductor Audio Amplifiers IC AMP ISOLATION 2CH 18V
Page 449

Data Sheet
970
In Stock
1: $2.07
10: $1.67
100: $1.50
250: $1.33
500: View



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