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)
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 921-3006
Tillv. art.nrINA200AIDGKR
VarumärkeTexas Instruments
10,529 kr
Each (On a Reel of 2500)
Enheter
Single 12 V - 80dB 1 Analogue 5 mA Surface Mount VSSOP 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 18 V
RS-artikelnummer 661-3352
Tillv. art.nrINA200AIDGKT
VarumärkeTexas Instruments
25,126 kr
Each (In a Pack of 5)
Enheter
- - - - - - - Surface Mount MSOP 8 3 x 3 x 0.97mm 0.97mm 3mm -
RS-artikelnummer 817-6603
Tillv. art.nrINA282AID
VarumärkeTexas Instruments
31,33 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 825-3094
Tillv. art.nrINA200AIDGKR
VarumärkeTexas Instruments
22,148 kr
Each (In a Pack of 5)
Enheter
Single 12 V - 80dB 1 Analogue 5 mA Surface Mount VSSOP 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 18 V
RS-artikelnummer 121-8923
Tillv. art.nrINA196AIDBVT
VarumärkeTexas Instruments
15,458 kr
Each (On a Reel of 250)
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 121-9260
Tillv. art.nrINA210AIDCKT
VarumärkeTexas Instruments
9,111 kr
Each (On a Reel of 250)
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 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 811-5800
Tillv. art.nrLMP8645MKE/NOPB
VarumärkeTexas Instruments
21,528 kr
Each (In a Pack of 5)
Enheter
Dual - ±12 V, ±2.7 V, ±5 V 95dB 1 Buffered 710 μA Surface Mount SOT-23 6 3.05 x 1.75 x 1mm 1mm 3.05mm 12 V
RS-artikelnummer 145-6618
Tillv. art.nrLMP8602QMA/NOPB
VarumärkeTexas Instruments
16,915 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 811-5793
Tillv. art.nrLMP8602QMA/NOPB
VarumärkeTexas Instruments
16,612 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 545-7647
Tillv. art.nrINA196AIDBVT
VarumärkeTexas Instruments
22,706 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 825-3088
Tillv. art.nrINA219AIDCNR
VarumärkeTexas Instruments
18,694 kr
Each (In a Pack of 5)
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 817-6616
Tillv. art.nrINA286AID
VarumärkeTexas Instruments
31,33 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 145-7077
Tillv. art.nrINA201AIDGKT
VarumärkeTexas Instruments
16,72 kr
Each (On a Reel of 250)
Enheter
- - - - - - - Surface Mount MSOP 8 3 x 3 x 0.97mm 0.97mm 3mm -
RS-artikelnummer 145-6832
Tillv. art.nrINA283AID
VarumärkeTexas Instruments
28,758 kr
Each (In a Tube of 75)
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 661-3422
Tillv. art.nrINA206AID
VarumärkeTexas Instruments
23,68 kr
Each
Enheter
- - - - - - - Surface Mount SOIC 14 8.65 x 3.91 x 1.58mm 1.58mm 8.65mm -
RS-artikelnummer 100-3828
Tillv. art.nrINA138NA/250
VarumärkeTexas Instruments
11,711 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 36 V
RS-artikelnummer 921-2959
Tillv. art.nrINA286AID
VarumärkeTexas Instruments
27,99 kr
Each (In a Tube of 75)
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 162-6166
Tillv. art.nrINA216A4YFFT
VarumärkeTexas Instruments
7,023 kr
Each (On a Reel of 250)
Enheter
Single 1.8 → 5.5 V - 90dB 1 Rail to Rail 0.025 mA Surface Mount DSBGA 4 0.79 x 0.79 x 0.325mm 0.325mm 0.79mm 5.5 V