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. 661-2491
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. 190-4316
FabrikantnummerMAX4173TEUT+T
FabrikantMaxim Integrated
1,436 €
Each (On a Reel of 2500)
Aantal stuks
Single 3 → 28 V - 90 (Typ.)dB 1 Voltage 1 mA Surface Mount SOT-23 6 3 x 1.75 x 1.3mm 1.3mm 3mm 28 V
RS-stocknr. 423-472
FabrikantnummerLTC6102CMS8#PBF
FabrikantAnalog Devices
3,82 €
Each
Aantal stuks
Single 12 V, 15 V, 18 V, 24 V, 28 V, 5 V, 9 V - - 1 - 0.45 mA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 60 V
RS-stocknr. 189-8749
FabrikantnummerMAX4173FEUT+T
FabrikantMaxim Integrated
2,002 €
Each (In a Pack of 5)
Aantal stuks
Single 3 → 28 V - 90dB 1 - 1 mA Surface Mount SOT-23 6 3 x 1.75 x 1.3mm 1.3mm 3mm 28 V
RS-stocknr. 189-0442
FabrikantnummerNCS211RSQT2G
FabrikantON Semiconductor
0,612 €
Each (In a Pack of 25)
Aantal stuks
Single 5 V - 105dB 1 Rail to Rail 80 μA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V
Nieuw
RS-stocknr. 208-8512
FabrikantnummerINA260AIPW
5,185 €
Each (In a Pack of 2)
Aantal stuks
Single 2.7-V → 5.5-V V not required - 1 - - - TSSOP 16 - - - -
RS-stocknr. 884-6807
FabrikantnummerLTC6101AIMS8#PBF
FabrikantAnalog Devices
3,332 €
Each (In a Pack of 5)
Aantal stuks
Single 12 V - - 1 - 640 μA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 60 V
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. 761-9626
FabrikantnummerLTC6101HVACS5#TRMPBF
FabrikantAnalog Devices
3,86 €
Each
Aantal stuks
Single 5 → 100 V 5 → 100V - 1 Unidirectional 0.64 mA Surface Mount TSOT-23 5 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 100 V
RS-stocknr. 761-8897
FabrikantnummerLT6106CS5#TRMPBF
FabrikantAnalog Devices
1,82 €
Each
Aantal stuks
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
RS-stocknr. 190-6329
FabrikantnummerMAX4373FEUA+T
FabrikantMaxim Integrated
1,958 €
Each (In a Pack of 5)
Aantal stuks
Single 2.7 → 28 V - 85 (Typ.)dB 1 Voltage 100 μA Surface Mount μMAX 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 28 V
Nieuw
RS-stocknr. 212-2552
FabrikantnummerMAX40204ANA+T
FabrikantMaxim Integrated
0,998 €
Each (On a Reel of 5000)
Aantal stuks
Single 5.5 V 36V 110dB 2 Bidirectional - - 8-Bump WLP 8 - - - -
RS-stocknr. 761-9623
FabrikantnummerLTC6101BIS5#TRMPBF
FabrikantAnalog Devices
3,52 €
Each
Aantal stuks
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-stocknr. 919-9358
FabrikantnummerLT6106CS5#TRMPBF
FabrikantAnalog Devices
1,137 €
Each (On a Reel of 500)
Aantal stuks
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
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. 860-7505
FabrikantnummerCS30AL
1,018 €
Each (In a Pack of 5)
Aantal stuks
Single 2.8 → 30 V - - 2 Single Ended - Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm -
RS-stocknr. 190-6356
FabrikantnummerMAX4071AUA+
FabrikantMaxim Integrated
1,632 €
Each (In a Pack of 5)
Aantal stuks
Single 2.7 → 24 V - 100dB 1 Bidirectional 250 μA Surface Mount μMAX 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 24 V
RS-stocknr. 186-1444
FabrikantnummerNCS211RMUTAG
FabrikantON Semiconductor
0,47 €
Each (In a Pack of 10)
Aantal stuks
Single 2.2 → 26 V - 105dB 1 Rail to Rail 60 μA Surface Mount UQFN 10 1.4 x 1.8 x 0.55mm 0.55mm 1.4mm 26 V
RS-stocknr. 189-0464
FabrikantnummerNCV211RSQT2G
FabrikantON Semiconductor
0,24 €
Each (In a Pack of 25)
Aantal stuks
Single 5 V - 105dB 1 Rail to Rail 80 μA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V
RS-stocknr. 146-1151
FabrikantnummerMAX4172ESA+
FabrikantMaxim Integrated
2,424 €
Each (In a Tube of 100)
Aantal stuks
Single 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - - 1 - 1.6 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 32 V