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. 190-4325
FabrikantnummerMAX4372HEUK+T
FabrikantMaxim Integrated
1,079 €
Each (On a Reel of 2500)
Aantal stuks
Single 2.7 → 28 V - 85 (Typ.)dB 1 Voltage 60 μA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 28 V
RS-stocknr. 185-8099
FabrikantnummerNCV214RSQT2G
FabrikantON Semiconductor
0,362 €
Each (On a Reel of 3000)
Aantal stuks
Single 2.2 → 26 V - 105dB 1 Rail to Rail 60 μA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V
RS-stocknr. 206-6086
FabrikantnummerTSC2010IST
0,927 €
Each (On a Reel of 4000)
Aantal stuks
Single 2.7 → 5.5 V - - 1 Bidirectional - - 8 8 - - - -
RS-stocknr. 190-6377
FabrikantnummerMAX4378TAUD+
FabrikantMaxim Integrated
2,894 €
Each (In a Pack of 5)
Aantal stuks
Quad 3 → 28 V ±8V 90dB 1 Buffered 2.2 mA Surface Mount TSSOP 14 5.1 x 4.5 x 0.95mm 0.95mm 5.1mm 28 V
RS-stocknr. 146-1151
FabrikantnummerMAX4172ESA+
FabrikantMaxim Integrated
2,176 €
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
RS-stocknr. 185-8901
FabrikantnummerNCS210RSQT2G
FabrikantON Semiconductor
0,566 €
Each (In a Pack of 10)
Aantal stuks
Single 2.2 → 26 V - 105dB 1 Rail to Rail 60 μA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V
RS-stocknr. 190-6559
FabrikantnummerMAX4081SAUA+
FabrikantMaxim Integrated
2,602 €
Each (In a Pack of 5)
Aantal stuks
Single 4.5 → 76 V - 100dB 1 Voltage 190 μA Surface Mount μMAX 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 76 V
RS-stocknr. 185-8084
FabrikantnummerNCS199A2RSQT2G
FabrikantON Semiconductor
0,291 €
Each (On a Reel of 3000)
Aantal stuks
Single 2.2 → 26 V - 100dB 1 Rail to Rail 60 μA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V
RS-stocknr. 189-8786
FabrikantnummerMAX4372FESA+
FabrikantMaxim Integrated
2,04 €
Each (In a Pack of 5)
Aantal stuks
Single 2.7 → 28 V - - 1 Differential 0.06 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 28 V
RS-stocknr. 190-6422
FabrikantnummerMAX4081FASA+
FabrikantMaxim Integrated
2,602 €
Each (In a Pack of 5)
Aantal stuks
Single 4.5 → 76 V - 100dB 1 Voltage 190 μA Surface Mount SO 8 5 x 4 x 1.5mm 1.5mm 5mm 76 V
Nieuw
RS-stocknr. 215-5539
FabrikantnummerTSC2010IYST
1,097 €
Each (On a Reel of 4000)
Aantal stuks
Single 2.7 → 5.5 V ±7V 90dB 1 Bidirectional - - MiniSO8 8 - - - -
RS-stocknr. 183-1949
FabrikantnummerAD8210YRZ-REEL7
FabrikantAnalog Devices
4,135 €
Each (In a Pack of 2)
Aantal stuks
Single 5 V - 100dB 1 Single Ended - Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V
RS-stocknr. 197-7169
FabrikantnummerINA168NA/250
2,584 €
Each (In a Pack of 5)
Aantal stuks
Single 5 V - 100dB 1 Current - - SOT-23 5 - - - -
RS-stocknr. 189-8749
FabrikantnummerMAX4173FEUT+T
FabrikantMaxim Integrated
2,70 €
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. 919-9550
FabrikantnummerLTC6101BIS5#TRMPBF
FabrikantAnalog Devices
2,143 €
Each (On a Reel of 500)
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. 190-4316
FabrikantnummerMAX4173TEUT+T
FabrikantMaxim Integrated
1,465 €
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. 779-9482
FabrikantnummerLT1787CS8#PBF
FabrikantAnalog Devices
4,05 €
Each (In a Pack of 2)
Aantal stuks
Single 36 V - - 1 Bidirectional, Unidirectional 60 μA Surface Mount SOIC 8 5.004 x 3.988 x 1.498mm 1.498mm 5mm 36 V
RS-stocknr. 190-6302
FabrikantnummerMAX4372HEUK+T
FabrikantMaxim Integrated
2,114 €
Each (In a Pack of 5)
Aantal stuks
Single 2.7 → 28 V - 85 (Typ.)dB 1 Voltage 60 μA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 28 V
RS-stocknr. 191-5163
FabrikantnummerMAX9919FASA+
FabrikantMaxim Integrated
2,174 €
Each (In a Pack of 5)
Aantal stuks
Single 4.5 → 5.5 V - 96dB 1 Rail to Rail 2.2 mA Surface Mount SOIC 8 4.98 x 3.99 x 1.58mm 1.58mm 4.98mm 5.5 V
RS-stocknr. 203-3515
FabrikantnummerTSC2012IST
2,15 €
Each (In a Pack of 5)
Aantal stuks
Single 2.7 V, 5.5 V - 115dB 1 Bidirectional - - MiniSO8 8 - - - -