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. 922-3344
FabrikantnummerXTR111AIDGQT
€ 1,083
Each (On a Reel of 250)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 661-3407
FabrikantnummerXTR111AIDGQT
€ 1,79
Each
Aantal stuks
- - - - - - - Surface Mount HTSSOP 10 3 x 3 x 1.02mm 1.02mm 3mm -
RS-stocknr. 865-5699
FabrikantnummerIR2175PBF
FabrikantInfineon
€ 3,035
Each (In a Tube of 2)
Aantal stuks
Single 5 V - - 1 Open Drain 0.5 mA Through Hole PDIP 8 5 x 4 x 1.75mm 1.75mm 5mm 5 V
RS-stocknr. 545-7603
FabrikantnummerINA193AIDBVT
€ 2,656
Each (In a Pack of 5)
Aantal stuks
Single 12 V, 15 V, 3 V, 5 V, 9 V - 80dB 1 - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 18 V
RS-stocknr. 145-0965
FabrikantnummerLT6105CMS8#PBF
FabrikantAnalog Devices
€ 1,398
Each (In a Tube of 50)
Aantal stuks
Single 2.85 → 36 V - 120dB 1 Unidirectional 350 μA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 36 V
RS-stocknr. 923-3713
FabrikantnummerINA193AIDBVT
€ 1,578
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. 165-5474
FabrikantnummerIR2175PBF
FabrikantInfineon
€ 2,401
Each (In a Tube of 50)
Aantal stuks
Single 5 V - - 1 Open Drain 0.5 mA Through Hole PDIP 8 5 x 4 x 1.75mm 1.75mm 5mm 5 V
RS-stocknr. 851-6819
FabrikantnummerLT6105CMS8#PBF
FabrikantAnalog Devices
€ 2,098
Each (In a Pack of 5)
Aantal stuks
Single 2.85 → 36 V - 120dB 1 Unidirectional 350 μA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 36 V
RS-stocknr. 159-9535
FabrikantnummerAD8418AWBRZ
FabrikantAnalog Devices
€ 1,94
Each (In a Tube of 98)
Aantal stuks
Single 2.7 → 5.5 V - 90dB 1 Buffered 4.1 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V
RS-stocknr. 798-9903
FabrikantnummerAD8418AWBRZ
FabrikantAnalog Devices
€ 2,54
Each
Aantal stuks
Single 2.7 → 5.5 V - 90dB 1 Buffered 4.1 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V
RS-stocknr. 145-6632
FabrikantnummerAD8418WBRMZ
FabrikantAnalog Devices
€ 1,833
Each (In a Tube of 50)
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. 820-9397
FabrikantnummerAD8418WBRMZ
FabrikantAnalog Devices
€ 2,296
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. 162-8573
FabrikantnummerINA219AIDCNR
€ 0,956
Each (On a Reel of 3000)
Aantal stuks
Single 6 V - 100dB 1 Digital 5 mA Surface Mount SOT-23 8 3 x 1.75 x 1.3mm 1.3mm 3mm 5.5 V
RS-stocknr. 761-9620
FabrikantnummerLTC6101HVAHMS8#PBF
FabrikantAnalog Devices
€ 5,04
Each
Aantal stuks
Single 100 V - - 1 Unidirectional 0.72 mA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 100 V
RS-stocknr. 920-9846
FabrikantnummerNCS199A3SQT2G
FabrikantON Semiconductor
€ 0,603
Each (In a Pack of 10)
Aantal stuks
Single 2.7 → 26 V - 100dB 1 Rail to Rail 5 mA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V
RS-stocknr. 163-0173
FabrikantnummerNCS199A3SQT2G
FabrikantON Semiconductor
€ 0,299
Each (On a Reel of 3000)
Aantal stuks
Single 2.7 → 26 V - 100dB 1 Rail to Rail 5 mA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V
RS-stocknr. 919-9556
FabrikantnummerLTC6101HVAHMS8#PBF
FabrikantAnalog Devices
€ 3,354
Each (In a Tube of 50)
Aantal stuks
Single 100 V - - 1 Unidirectional 0.72 mA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 100 V
RS-stocknr. 825-3088
FabrikantnummerINA219AIDCNR
€ 2,17
Each (In a Pack of 5)
Aantal stuks
Single 6 V - 100dB 1 Digital 5 mA Surface Mount SOT-23 8 3 x 1.75 x 1.3mm 1.3mm 3mm 5.5 V
RS-stocknr. 121-8922
FabrikantnummerINA195AIDBVT
€ 1,495
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. 901-3976
FabrikantnummerSi8920BC-IP
FabrikantSilicon Labs
€ 3,495
Each (In a Pack of 2)
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
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