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. 190-6610
FabrikantnummerMAX9611AUB+T
FabrikantMaxim Integrated
2,436 €
Each (In a Pack of 5)
Aantal stuks
Single 2.7 → 5.5 V - 84dB 1 Rail to Rail 2.6 mA Surface Mount μMAX 10 3.16 x 3.12 x 0.95mm 0.95mm 3.16mm 5.5 V
RS-stocknr. 189-7368
FabrikantnummerMAX9929FAUA+
FabrikantMaxim Integrated
1,361 €
Each (In a Tube of 50)
Aantal stuks
Single - - 87dB 2 Bidirectional, Unidirectional 20 μA Surface Mount μMAX 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 5.5 V
RS-stocknr. 817-6546
FabrikantnummerINA199A3DCKT
0,672 €
Each (In a Pack of 5)
Aantal stuks
Single 2.7 → 26 V - 100dB 1 Bidirectional 100 μA Surface Mount SC-70 6 2.15 x 1.4 x 1mm 1mm 2.15mm 26 V
RS-stocknr. 165-9412
FabrikantnummerMAX9928FAUA+
FabrikantMaxim Integrated
1,35 €
Each (In a Tube of 50)
Aantal stuks
Single 2.5 → 5.5 V - 93dB 1 Bidirectional, Unidirectional 200 μA Surface Mount μMAX 8 3.05 x 3.05 x 0.95mm 0.95mm 3.05mm 5.5 V
RS-stocknr. 796-8912
FabrikantnummerAD8211YRJZ-R2
FabrikantAnalog Devices
2,408 €
Each (In a Pack of 5)
Aantal stuks
Single 5 V - 100dB 1 Buffered 2 mA Surface Mount SOT-23 5 3 x 1.7 x 1.3mm 1.3mm 3mm 5.5 V
RS-stocknr. 178-4566
FabrikantnummerNCS210RMUTAG
FabrikantON Semiconductor
0,549 €
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. 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. 919-9881
FabrikantnummerLT6106HS5#TRMPBF
FabrikantAnalog Devices
1,329 €
Each (On a Reel of 500)
Aantal stuks
Single 2.7 → 36 V - - 1 - 115 μA Surface Mount TSOT-23 5 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 36 V
RS-stocknr. 820-9750
FabrikantnummerAD8418AWBRMZ
FabrikantAnalog Devices
2,544 €
Each (In a Pack of 5)
Aantal stuks
Single 5 V - 90dB 1 Bidirectional 130 μA Surface Mount MSOP 8 3.2 x 3.2 x 0.95mm 0.95mm 3.2mm 5.5 V
RS-stocknr. 160-4523
FabrikantnummerAD8213YRMZ
FabrikantAnalog Devices
3,828 €
Each (In a Tube of 50)
Aantal stuks
Single 5 V - 100dB 2 Buffered 3.7 mA Surface Mount MSOP 10 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 5.5 V
RS-stocknr. 738-5131
FabrikantnummerZXCT1022E5TA
FabrikantDiodesZetex
1,078 €
Each (In a Pack of 5)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 189-8769
FabrikantnummerMAX4080SAUA+
FabrikantMaxim Integrated
1,842 €
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
Nieuw
RS-stocknr. 203-3517
FabrikantnummerTSC213ICT
1,034 €
Each (In a Pack of 10)
Aantal stuks
Single 2.7 V, 26 V - 120dB 1 Bidirectional - - SC-70 6 - - - -
RS-stocknr. 169-0202
FabrikantnummerSI8920AC-IP
FabrikantSilicon Labs
2,852 €
Each (In a Tube of 50)
Aantal stuks
Single 3 → 5.5 V - - 2 Differential 5.5 mA Through Hole DIP 8 9.9 x 6.6 x 3.44mm 3.44mm 9.9mm 5.5 V
RS-stocknr. 145-7690
FabrikantnummerLT1787IMS8#PBF
FabrikantAnalog Devices
3,887 €
Each (In a Tube of 50)
Aantal stuks
Single 36 V - - 1 Bidirectional, Unidirectional 0.02 mA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 36 V
RS-stocknr. 786-9714
FabrikantnummerLT6100CMS8#PBF
FabrikantAnalog Devices
2,508 €
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. 851-6828
FabrikantnummerLT6108IMS8-2#PBF
FabrikantAnalog Devices
3,166 €
Each (In a Pack of 5)
Aantal stuks
Single 2.7 → 60 V - 125dB 1 Open Drain 450 μA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 60 V
RS-stocknr. 738-5285
FabrikantnummerZXCT1110W5-7
FabrikantDiodesZetex
0,754 €
Each (In a Pack of 5)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 894-7027
FabrikantnummerTS1106-200ITD833
FabrikantSilicon Labs
1,666 €
Each (In a Pack of 5)
Aantal stuks
Single 1.7 → 5.25 V - 120dB 2 Buffered 1.3 μA Surface Mount TDFN 8 3 x 3 x 0.75mm 0.75mm 3mm 6 V
RS-stocknr. 190-6422
FabrikantnummerMAX4081FASA+
FabrikantMaxim Integrated
2,586 €
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
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