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 921-2940
Tillv. art.nrINA282AID
VarumärkeTexas Instruments
26,954 kr
Each (In a Tube of 75)
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Single 2.7 → 18 V - 120dB 1 Bidirectional 900 μA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 18 V
RS-artikelnummer 922-3322
Tillv. art.nrINA200AIDGKT
VarumärkeTexas Instruments
15,177 kr
Each (On a Reel of 250)
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- - - - - - - - - - - - - -
RS-artikelnummer 661-3352
Tillv. art.nrINA200AIDGKT
VarumärkeTexas Instruments
26,864 kr
Each (In a Pack of 5)
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- - - - - - - Surface Mount MSOP 8 3 x 3 x 0.97mm 0.97mm 3mm -
RS-artikelnummer 817-6603
Tillv. art.nrINA282AID
VarumärkeTexas Instruments
31,992 kr
Each (In a Pack of 5)
Enheter
Single 2.7 → 18 V - 120dB 1 Bidirectional 900 μA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 18 V
RS-artikelnummer 145-6618
Tillv. art.nrLMP8602QMA/NOPB
VarumärkeTexas Instruments
36,943 kr
Each (In a Tube of 95)
Enheter
Single 5 V - 90dB 1 Bidirectional 1.3 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 60 V
RS-artikelnummer 121-9260
Tillv. art.nrINA210AIDCKT
VarumärkeTexas Instruments
9,26 kr
Each (On a Reel of 250)
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Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V - 105dB 1 - - Surface Mount SC-70 6 2 x 1.25 x 0.9mm 0.9mm 2mm 26 V
RS-artikelnummer 709-4529
Tillv. art.nrINA210AIDCKT
VarumärkeTexas Instruments
19,13 kr
Each
Enheter
Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V - 105dB 1 - - Surface Mount SC-70 6 2 x 1.25 x 0.9mm 0.9mm 2mm 26 V
RS-artikelnummer 545-7647
Tillv. art.nrINA196AIDBVT
VarumärkeTexas Instruments
27,464 kr
Each (In a Pack of 5)
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Single 3 V, 5 V, 9 V, 12 V, 15 V - 80dB 1 - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 18 V
RS-artikelnummer 811-5793
Tillv. art.nrLMP8602QMA/NOPB
VarumärkeTexas Instruments
36,666 kr
Each (In a Pack of 5)
Enheter
Single 5 V - 90dB 1 Bidirectional 1.3 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 60 V
RS-artikelnummer 121-8923
Tillv. art.nrINA196AIDBVT
VarumärkeTexas Instruments
16,312 kr
Each (On a Reel of 250)
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Single 3 V, 5 V, 9 V, 12 V, 15 V - 80dB 1 - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 18 V
RS-artikelnummer 197-7163
Tillv. art.nrINA138NA/250
VarumärkeTexas Instruments
20,99 kr
Each (In a Pack of 5)
Enheter
Single 5 V - 100dB 1 Current - - SOT-23 5 - - - -
RS-artikelnummer 162-6302
Tillv. art.nrLMP8602MME/NOPB
VarumärkeTexas Instruments
24,469 kr
Each (On a Reel of 250)
Enheter
Single 5 V - 80dB 1 Bidirectional, Differential, Rail to Rail, Unidirectional 1.3 mA Surface Mount MSOP 8 4.9 x 3.9 x 1.45mm 1.45mm 4.9mm 5.5 V
RS-artikelnummer 100-3849
Tillv. art.nrINA139NA/250
VarumärkeTexas Instruments
12,474 kr
Each (On a Reel of 250)
Enheter
Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - 100dB 1 - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 40 V
RS-artikelnummer 545-7653
Tillv. art.nrINA197AIDBVT
VarumärkeTexas Instruments
27,464 kr
Each (In a Pack of 5)
Enheter
Single 3 V, 5 V, 9 V, 12 V, 15 V - 80dB 1 - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 18 V
RS-artikelnummer 162-8573
Tillv. art.nrINA219AIDCNR
VarumärkeTexas Instruments
9,883 kr
Each (On a Reel of 3000)
Enheter
Single 6 V - 100dB 1 Digital 5 mA Surface Mount SOT-23 8 3 x 1.75 x 1.3mm 1.3mm 3mm 5.5 V
RS-artikelnummer 162-6303
Tillv. art.nrLMP8603MA/NOPB
VarumärkeTexas Instruments
15,809 kr
Each (In a Tube of 95)
Enheter
Single 5 V - 80dB 1 Bidirectional, Differential, Rail to Rail, Unidirectional 1.3 mA Surface Mount SOIC 8 3 x 3 x 0.86mm 0.86mm 3mm 5.5 V
RS-artikelnummer 197-7176
Tillv. art.nrINA213AIDCKT
VarumärkeTexas Instruments
11,333 kr
Each (In a Pack of 10)
Enheter
Single 5 V - 100dB 1 Voltage - - SC-70 6 - - - -
RS-artikelnummer 661-2491
Tillv. art.nrINA271AID
VarumärkeTexas Instruments
25,75 kr
Each
Enheter
Single 3 V, 5 V, 9 V, 12 V, 15 V - 80dB 1 - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 1.58mm 4.9mm 18 V
RS-artikelnummer 922-3344
Tillv. art.nrXTR111AIDGQT
VarumärkeTexas Instruments
10,975 kr
Each (On a Reel of 250)
Enheter
- - - - - - - - - - - - - -
RS-artikelnummer 162-8163
Tillv. art.nrINA199A2DCKT
VarumärkeTexas Instruments
5,016 kr
Each (On a Reel of 250)
Enheter
Single 2.7 → 26 V - 100dB 1 Bidirectional 100 μA Surface Mount SC-70 6 2.15 x 1.4 x 1mm 1mm 2.15mm 26 V