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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Omschrijving Prijs 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-stocknr. 661-3407
FabrikantnummerXTR111AIDGQT
€ 1,68
Each
Aantal stuks
- - - - - - - Surface Mount HTSSOP 10 3 x 3 x 1.02mm 1.02mm 3mm -
RS-stocknr. 922-3344
FabrikantnummerXTR111AIDGQT
€ 1,002
Each (On a Reel of 250)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 923-3713
FabrikantnummerINA193AIDBVT
€ 1,483
Each (On a Reel of 250)
Aantal stuks
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-stocknr. 825-3088
FabrikantnummerINA219AIDCNR
€ 2,038
Each (In a Pack of 5)
Aantal stuks
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-stocknr. 162-8573
FabrikantnummerINA219AIDCNR
€ 1,011
Each (On a Reel of 3000)
Aantal stuks
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-stocknr. 121-8922
FabrikantnummerINA195AIDBVT
€ 1,483
Each (On a Reel of 250)
Aantal stuks
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-stocknr. 545-7631
FabrikantnummerINA195AIDBVT
€ 2,808
Each (In a Pack of 5)
Aantal stuks
Single 12 V, 15 V, 3 V, 5 V, 9 V - 80dB 1 - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 18 V
RS-stocknr. 817-6580
FabrikantnummerINA219AID
€ 2,458
Each (In a Pack of 5)
Aantal stuks
Single 3 → 5.5 V - 100dB 1 Bidirectional 1 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V
RS-stocknr. 545-7647
FabrikantnummerINA196AIDBVT
€ 2,502
Each (In a Pack of 5)
Aantal stuks
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-stocknr. 922-3322
FabrikantnummerINA200AIDGKT
€ 1,37
Each (On a Reel of 250)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 661-3352
FabrikantnummerINA200AIDGKT
€ 2,378
Each (In a Pack of 5)
Aantal stuks
- - - - - - - Surface Mount MSOP 8 3 x 3 x 0.97mm 0.97mm 3mm -
RS-stocknr. 121-8923
FabrikantnummerINA196AIDBVT
€ 1,483
Each (On a Reel of 250)
Aantal stuks
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-stocknr. 145-7636
FabrikantnummerINA219AID
€ 2,072
Each (In a Tube of 75)
Aantal stuks
Single 3 → 5.5 V - 100dB 1 Bidirectional 1 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V
RS-stocknr. 923-6905
FabrikantnummerINA211AIDCKT
€ 0,524
Each (On a Reel of 250)
Aantal stuks
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-stocknr. 461-6558
FabrikantnummerINA139NA/250
€ 1,67
Each
Aantal stuks
Single 12 V, 15 V, 18 V, 24 V, 28 V, 3 V, 5 V, 9 V - 100dB 1 - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 40 V
RS-stocknr. 709-8855
FabrikantnummerINA219AIDCNT
€ 2,65
Each
Aantal stuks
- - - - - - - Surface Mount SOT-23 8 2.9 x 1.63 x 1.1mm 1.1mm 2.9mm -
RS-stocknr. 661-2491
FabrikantnummerINA271AID
€ 2,50
Each
Aantal stuks
Single 12 V, 15 V, 3 V, 5 V, 9 V - 80dB 1 - - Surface Mount SOIC 8 4.9 x 3.91 x 1.58mm 1.58mm 4.9mm 18 V
RS-stocknr. 730-0556
FabrikantnummerINA219BIDCNT
€ 2,30
Each
Aantal stuks
- - - - - - - Surface Mount SOT-23 8 3 x 1.75 x 1.3mm 1.3mm 3mm -
RS-stocknr. 100-3849
FabrikantnummerINA139NA/250
€ 1,131
Each (On a Reel of 250)
Aantal stuks
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-stocknr. 709-9117
FabrikantnummerINA214AIDCKT
€ 1,22
Each
Aantal stuks
Single 12 V, 15 V, 18 V, 24 V, 3 V, 5 V, 9 V - 105dB 1 - - Surface Mount SC-70 6 2 x 1.25 x 0.9mm 0.9mm 2mm 26 V