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. 186-1269
FabrikantnummerNCS211RMUTAG
FabrikantON Semiconductor
0,209 €
Each (On a Reel of 3000)
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. 170-8124
FabrikantnummerISL28022FRZ-T7A
FabrikantIntersil
1,793 €
Each (On a Reel of 250)
Aantal stuks
Single 3.3 V - 110dB 2 Open Drain 0.7 mA Surface Mount QFN 16 3 x 3 x 0.85mm 0.85mm 3mm 5.5 V
RS-stocknr. 190-6625
FabrikantnummerMAX9634FEUK+T
FabrikantMaxim Integrated
1,088 €
Each (In a Pack of 5)
Aantal stuks
Single 1.6 → 28 V - 94dB 1 Voltage 2.5 μA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 28 V
RS-stocknr. 923-7917
FabrikantnummerMAX4080SASA+
FabrikantMaxim Integrated
1,289 €
Each (In a Tube of 100)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 203-3514
FabrikantnummerTSC2012IST
0,786 €
Each (On a Reel of 4000)
Aantal stuks
Single 2.7 V, 5.5 V - 115dB 1 Bidirectional - - MiniSO8 8 - - - -
RS-stocknr. 183-1751
FabrikantnummerAD8210YRZ-REEL7
FabrikantAnalog Devices
2,30 €
Each (On a Reel of 1000)
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. 203-3517
FabrikantnummerTSC213ICT
1,01 €
Each (In a Pack of 10)
Aantal stuks
Single 2.7 V, 26 V - 120dB 1 Bidirectional - - SC-70 6 - - - -
Nieuw
RS-stocknr. 208-5081
FabrikantnummerTSC2011IYDT
0,952 €
Each (On a Reel of 2500)
Aantal stuks
Single 2.7 → 5.5 V - 90dB 1 Bidirectional - - SO8 8 - - - -
RS-stocknr. 189-7306
FabrikantnummerMAX4173FEUT+T
FabrikantMaxim Integrated
1,479 €
Each (On a Reel of 2500)
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. 822-6657
FabrikantnummerLTC4151IDD#PBF
FabrikantAnalog Devices
6,16 €
Each
Aantal stuks
Single 4.5 → 5.5 V - - 1 Open Collector 1.7 mA Surface Mount DFN 10 3 x 3 x 0.7mm 0.7mm 3mm 80 V
RS-stocknr. 921-5087
FabrikantnummerINA219AIDCNT
1,343 €
Each (On a Reel of 250)
Aantal stuks
- - - - - - - Surface Mount SOT-23 8 2.9 x 1.63 x 1.1mm 1.1mm 2.9mm -
RS-stocknr. 203-3512
FabrikantnummerTSC2012IDT
1,82 €
Each
Aantal stuks
Single 2.7 V, 5.5 V - 115dB 1 Bidirectional - - SO8 8 - - - -
RS-stocknr. 540-3791
FabrikantnummerMAX4172ESA+
FabrikantMaxim Integrated
3,00 €
Each
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. 121-7249
FabrikantnummerISL28023FR12Z-T7A
FabrikantIntersil
5,165 €
Each (In a Pack of 2)
Aantal stuks
Single 3.3 V - 136dB 2 Open Drain 1.24 mA Surface Mount QFN 24 4 x 4 x 0.85mm 0.85mm 4mm 5.5 V
RS-stocknr. 189-7365
FabrikantnummerMAX9919NASA+
FabrikantMaxim Integrated
1,327 €
Each (In a Tube of 100)
Aantal stuks
Single 4.5 → 5.5 V - 80dB 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. 168-7749
FabrikantnummerTSC102IPT
0,451 €
Each (On a Reel of 4000)
Aantal stuks
Single 2.8 → 30 V - 90dB 1 - 700 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V
RS-stocknr. 798-5012
FabrikantnummerMAX4377TASA+
FabrikantMaxim Integrated
1,621 €
Each (In a Tube of 100)
Aantal stuks
Single 3 → 28 V - 90dB 1 - 2.2 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 28 V
RS-stocknr. 196-8968
FabrikantnummerMAX40056UAUA/V+
FabrikantMaxim Integrated
1,305 €
Each (In a Tube of 50)
Aantal stuks
- 5.5 v - 100dB - Differential - - ÎMAX 8 - - - -
RS-stocknr. 162-4671
FabrikantnummerINA198AIDBVT
1,454 €
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. 121-9718
FabrikantnummerINA220AIDGST
1,381 €
Each (On a Reel of 250)
Aantal stuks
Single 3 → 5.5 V - 100dB 1 Bidirectional 1 mA Surface Mount VSSOP 10 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 5.5 V