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. 185-8087
FabrikantnummerNCS214RSQT2G
FabrikantON Semiconductor
€ 0,242
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. 190-6299
FabrikantnummerMAX4081SASA+
FabrikantMaxim Integrated
€ 2,208
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
RS-stocknr. 540-3791
FabrikantnummerMAX4172ESA+
FabrikantMaxim Integrated
€ 3,28
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. 806-7907
FabrikantnummerAD8219BRMZ
FabrikantAnalog Devices
€ 2,34
Each (In a Pack of 2)
Aantal stuks
Single -0.3 → 85 V - 94dB 1 Unidirectional 130 Bias μA Surface Mount MSOP 8 3.2 x 3.2 x 0.95mm 0.95mm 3.2mm 80 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. 186-1269
FabrikantnummerNCS211RMUTAG
FabrikantON Semiconductor
€ 0,222
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. 185-9030
FabrikantnummerNCV214RSQT2G
FabrikantON Semiconductor
€ 0,728
Each (In a Pack of 9)
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
Nieuw
RS-stocknr. 208-5082
FabrikantnummerTSC2011IYDT
€ 2,116
Each (In a Pack of 5)
Aantal stuks
Single 2.7 → 5.5 V - 90dB 1 Bidirectional - - SO8 8 - - - -
RS-stocknr. 183-1929
FabrikantnummerAD8418ABRMZ
FabrikantAnalog Devices
€ 2,378
Each (In a Pack of 5)
Aantal stuks
Single 2.7 → 5.5 V - 90dB 1 Buffered - Surface Mount MSOP 8 3.2 x 3.2 x 0.95mm 0.95mm 3.2mm 5.5 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. 190-4299
FabrikantnummerMAX4073TAUT+T
FabrikantMaxim Integrated
€ 0,874
Each (On a Reel of 2500)
Aantal stuks
Single 3 → 28 V - 90 (Typ.)dB 1 Voltage 1.2 mA Surface Mount SOT-23 6 3 x 1.75 x 1.3mm 1.3mm 3mm 28 V
RS-stocknr. 191-3231
FabrikantnummerMAX9938HEUK+T
FabrikantMaxim Integrated
€ 0,636
Each (On a Reel of 2500)
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. 860-7517
FabrikantnummerCS30CL
€ 0,996
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. 189-8769
FabrikantnummerMAX4080SAUA+
FabrikantMaxim Integrated
€ 1,892
Each (In a Pack of 5)
Aantal stuks
Single 4.5 → 76 V - 100dB 1 Rail to Rail 0.19 mA Surface Mount μMAX 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 76 V
RS-stocknr. 786-9714
FabrikantnummerLT6100CMS8#PBF
FabrikantAnalog Devices
€ 2,332
Each (In a Pack of 5)
Aantal stuks
Single 2.7 → 36 V - 100dB 1 Differential 130 μA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 36 V
RS-stocknr. 178-4566
FabrikantnummerNCS210RMUTAG
FabrikantON Semiconductor
€ 0,204
Each (In a Pack of 50)
Aantal stuks
Single 5 V - 105dB 1 Rail to Rail 80 μA Surface Mount UQFN 10 1.4 x 1.8 x 0.55mm 0.55mm 1.4mm 26 V
RS-stocknr. 189-7296
FabrikantnummerMAX4080SAUA+
FabrikantMaxim Integrated
€ 1,599
Each (In a Tube of 50)
Aantal stuks
Single 4.5 → 76 V - 100dB 1 Rail to Rail 0.19 mA Surface Mount μMAX 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 76 V
RS-stocknr. 921-5305
FabrikantnummerINA226AIDGST
€ 1,938
Each (On a Reel of 250)
Aantal stuks
- - - - - - - Surface Mount MSOP 10 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm -
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. 197-7171
FabrikantnummerINA169NA/250
€ 2,43
Each (In a Pack of 5)
Aantal stuks
Single 5 V - 100dB 1 Current - - SOT-23 5 - - - -