Current Sensing Amplifiers

Current sensing amplifiers measure current by outputting a voltage that is proportional to the flowing power current. A resistor is used to convert the load current to a small voltage which is then accurately amplified. They offer real-time overcurrent protection.


What are the different applications of current sensing amplifiers?


Accurate current sensing is crucial to optimising performance in a range of applications, such as motor control and power management. In devices where battery or power-line monitoring is highly necessary, like laptops and phones, current sensing amplifiers are critical. 


How to choose the right type of current sensing amplifier


There are several factors that will determine the the type of amplifier you choose, including whether the measurement will be on the high or low side. The sense resistor can be placed either between the supply voltage and load, or between the load and ground. The former is called high-side seinsing, whereas the latter is called low-side sensing. High voltage current sensing amplifiers offer input ranges up to +76V and down to -20V, ideal for applications such as motor control and network routers. Low power current sensing amplifiers help to maximise and extend battery life. 


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Beskrivning Pris Power Supply Type Typical Single Supply Voltage Typical Dual Supply Voltage Minimum CMRR Number of Channels per Chip Output Type Maximum Supply Current Mounting Type Package Type Pin Count Dimensions Height Length Maximum Operating Supply Voltage
RS-artikelnummer 160-8581
Tillv. art.nrAD8418BRMZ
VarumärkeAnalog Devices
11,484 kr
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Single 5 V - 90dB 1 Bidirectional 130 μA Surface Mount MSOP 8 3.2 x 3.2 x 0.95mm 0.95mm 3.2mm 5.5 V
RS-artikelnummer 820-9390
Tillv. art.nrAD8418BRMZ
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11,28 kr
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Single 5 V - 90dB 1 Bidirectional 130 μA Surface Mount MSOP 8 3.2 x 3.2 x 0.95mm 0.95mm 3.2mm 5.5 V
RS-artikelnummer 820-9750
Tillv. art.nrAD8418AWBRMZ
VarumärkeAnalog Devices
26,304 kr
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Single 5 V - 90dB 1 Bidirectional 130 μA Surface Mount MSOP 8 3.2 x 3.2 x 0.95mm 0.95mm 3.2mm 5.5 V
RS-artikelnummer 160-9848
Tillv. art.nrAD8418AWBRMZ
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20,064 kr
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Single 5 V - 90dB 1 Bidirectional 130 μA Surface Mount MSOP 8 3.2 x 3.2 x 0.95mm 0.95mm 3.2mm 5.5 V
RS-artikelnummer 145-1310
Tillv. art.nrLT1999IMS8-20#PBF
VarumärkeAnalog Devices
37,569 kr
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Single 4.5 5.5 V - 80dB 1 Buffered, Rail to Rail 7.1 mA Surface Mount MSOP 8 3 x 3 x 0.9984mm 0.998mm 3mm 5.5 V
RS-artikelnummer 822-5844
Tillv. art.nrLT1999IMS8-20#PBF
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47,10 kr
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Single 4.5 5.5 V - 80dB 1 Buffered, Rail to Rail 7.1 mA Surface Mount MSOP 8 3 x 3 x 0.9984mm 0.998mm 3mm 5.5 V
RS-artikelnummer 823-0079
Tillv. art.nrLTC6102IMS8#PBF
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43,275 kr
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Single 5 100 V - - 1 Rail to Rail 650 μA Surface Mount MSOP 8 3 x 3 x 0.9984mm 0.998mm 3mm 100 V
RS-artikelnummer 177-7171
Tillv. art.nrLTC6102IMS8#PBF
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33,63 kr
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Single 5 100 V - - 1 Rail to Rail 650 μA Surface Mount MSOP 8 3 x 3 x 0.9984mm 0.998mm 3mm 100 V
RS-artikelnummer 822-5743
Tillv. art.nrLTC4151CDD#PBF
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33,89 kr
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Single 7 80 V - - 1 Open Collector 1.7 mA Surface Mount DFN 10 3 x 3 x 0.7mm 0.7mm 3mm 80 V
RS-artikelnummer 183-1751
Tillv. art.nrAD8210YRZ-REEL7
VarumärkeAnalog Devices
28,497 kr
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Single 5 V - 100dB 1 Single Ended - Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V
RS-artikelnummer 697-7224
Tillv. art.nrAD8210WYRZ
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45,81 kr
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Single 5 V - - 1 - - Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V
RS-artikelnummer 919-9550
Tillv. art.nrLTC6101BIS5#TRMPBF
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23,461 kr
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Single 4 60 V 4 60V - 1 Unidirectional 0.64 mA Surface Mount TSOT-23 5 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 60 V
RS-artikelnummer 761-8453
Tillv. art.nrLT1787IMS8#PBF
VarumärkeAnalog Devices
60,39 kr
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Single 36 V - - 1 Bidirectional, Unidirectional 0.02 mA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 36 V
RS-artikelnummer 806-7907
Tillv. art.nrAD8219BRMZ
VarumärkeAnalog Devices
24,195 kr
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Single -0.3 → 85 V - 94dB 1 Unidirectional 130 Bias μA Surface Mount MSOP 8 3.2 x 3.2 x 0.95mm 0.95mm 3.2mm 80 V
RS-artikelnummer 819-7294
Tillv. art.nrAD8213YRMZ
VarumärkeAnalog Devices
25,63 kr
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Single 5 V - 100dB 2 Buffered 3.7 mA Surface Mount MSOP 10 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 5.5 V
RS-artikelnummer 145-7168
Tillv. art.nrAD8212YRMZ
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24,522 kr
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Single 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - - 1 - 1.5 mA Surface Mount MSOP 8 3 x 3 x 0.85mm 0.85mm 3mm 65 V
RS-artikelnummer 183-1761
Tillv. art.nrAD8417WHRMZ
VarumärkeAnalog Devices
27,546 kr
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Single 2.7 → 5.5 V - 90dB 1 Buffered - Surface Mount MSOP 8 3.2 x 3.2 x 0.95mm 0.95mm 3.2mm 5.5 V
RS-artikelnummer 851-6819
Tillv. art.nrLT6105CMS8#PBF
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21,694 kr
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Single 2.85 36 V - 120dB 1 Unidirectional 350 μA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 36 V
RS-artikelnummer 761-9620
Tillv. art.nrLTC6101HVAHMS8#PBF
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52,11 kr
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Single 100 V - - 1 Unidirectional 0.72 mA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 100 V
RS-artikelnummer 761-8897
Tillv. art.nrLT6106CS5#TRMPBF
VarumärkeAnalog Devices
19,65 kr
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Enheter
Single 36 V - - 1 - 0.13 mA Surface Mount TSOT-23 5 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 36 V