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. 835-3793
FabrikantnummerAD8418ABRMZ-RL
FabrikantAnalog Devices
€ 2,433
Each (In a Pack of 3)
Aantal stuks
Single 5 V - 90dB 1 Buffered 4.1 mA Surface Mount MSOP 8 3.2 x 3.2 x 0.95mm 0.95mm 3.2mm 5.5 V
RS-stocknr. 738-5285
FabrikantnummerZXCT1110W5-7
FabrikantDiodesZetex
€ 0,772
Each (In a Pack of 5)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 121-9269
FabrikantnummerINA219BIDCNT
€ 1,578
Each (On a Reel of 250)
Aantal stuks
- - - - - - - Surface Mount SOT-23 8 3 x 1.75 x 1.3mm 1.3mm 3mm -
RS-stocknr. 177-7171
FabrikantnummerLTC6102IMS8#PBF
FabrikantAnalog Devices
€ 2,799
Each (In a Tube of 50)
Aantal stuks
Single 5 → 100 V - - 1 Rail to Rail 650 μA Surface Mount MSOP 8 3 x 3 x 0.9984mm 0.998mm 3mm 100 V
RS-stocknr. 921-5087
FabrikantnummerINA219AIDCNT
€ 1,437
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. 709-4522
FabrikantnummerINA211AIDCKT
€ 0,63
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
RS-stocknr. 823-0079
FabrikantnummerLTC6102IMS8#PBF
FabrikantAnalog Devices
€ 4,185
Each (In a Pack of 2)
Aantal stuks
Single 5 → 100 V - - 1 Rail to Rail 650 μA Surface Mount MSOP 8 3 x 3 x 0.9984mm 0.998mm 3mm 100 V
RS-stocknr. 661-2491
FabrikantnummerINA271AID
€ 2,49
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. 168-8817
FabrikantnummerCS30BL
€ 0,42
Each (On a Reel of 3000)
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. 160-9876
FabrikantnummerAD8418ABRMZ-RL
FabrikantAnalog Devices
€ 1,317
Each (On a Reel of 3000)
Aantal stuks
Single 5 V - 90dB 1 Buffered 4.1 mA Surface Mount MSOP 8 3.2 x 3.2 x 0.95mm 0.95mm 3.2mm 5.5 V
RS-stocknr. 100-3849
FabrikantnummerINA139NA/250
€ 1,206
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. 730-0556
FabrikantnummerINA219BIDCNT
€ 2,31
Each
Aantal stuks
- - - - - - - Surface Mount SOT-23 8 3 x 1.75 x 1.3mm 1.3mm 3mm -
RS-stocknr. 923-6908
FabrikantnummerINA213AIDCKT
€ 0,791
Each (On a Reel of 250)
Aantal stuks
Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V - 100dB 1 - - Surface Mount SC-70 6 2 x 1.25 x 0.9mm 0.9mm 2mm 26 V
RS-stocknr. 155-5368
FabrikantnummerLT2940IMS#PBF
FabrikantAnalog Devices
€ 3,484
Each (In a Tube of 37)
Aantal stuks
Single 80 V - - 1 Bidirectional 5 mA Surface Mount MSOP 12 4.039 x 3 x 0.86mm 0.86mm 4.04mm 80 V
RS-stocknr. 121-7248
FabrikantnummerISL28022FRZ-T7A
FabrikantIntersil
€ 3,09
Each (In a Pack of 2)
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. 190-4331
FabrikantnummerMAX4376TAUK+T
FabrikantMaxim Integrated
€ 1,123
Each (On a Reel of 2500)
Aantal stuks
Single 3 → 28 V - 90dB 1 Buffered 2.2 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 28 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. 191-6982
FabrikantnummerMAX4377HASA+
FabrikantMaxim Integrated
€ 2,32
Each (In a Pack of 5)
Aantal stuks
Dual - ±8V 90dB 1 Buffered 2.2 mA Surface Mount SO 8 5 x 4 x 1.5mm 1.5mm 5mm 28 V
RS-stocknr. 190-6383
FabrikantnummerMAX44284FAUT+T
FabrikantMaxim Integrated
€ 1,478
Each (In a Pack of 5)
Aantal stuks
Single 1.7 → 5.5 V - 91.3dB 1 Voltage 41.5 μA Surface Mount SOT-23 6 3 x 1.75 x 1.3mm 1.3mm 3mm 5.5 V
RS-stocknr. 923-7917
FabrikantnummerMAX4080SASA+
FabrikantMaxim Integrated
€ 1,543
Each (In a Tube of 100)
Aantal stuks
- - - - - - - - - - - - - -
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