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. 919-9569
FabrikantnummerLTC6101HVACS5#TRMPBF
FabrikantAnalog Devices
2,35 €
Each (On a Reel of 500)
Aantal stuks
Single 5 → 100 V 5 → 100V - 1 Unidirectional 0.64 mA Surface Mount TSOT-23 5 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 100 V
RS-stocknr. 154-920
FabrikantnummerZXCT1009FTA
FabrikantDiodesZetex
0,822 €
Each (In a Pack of 5)
Aantal stuks
- 2.5 → 20 V - - - - - Surface Mount SOT-23 3 3.05 x 1.4 x 1mm 1mm 3.05mm -
RS-stocknr. 545-7625
FabrikantnummerINA194AIDBVT
2,502 €
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. 189-9253
FabrikantnummerMAX4070AUA+
FabrikantMaxim Integrated
1,924 €
Each (In a Pack of 5)
Aantal stuks
Single 2.7 → 24 V - 100dB 1 Rail to Rail 0.25 mA Surface Mount μMAX 8 3.05 x 3.05 x 0.95mm 0.95mm 3.05mm 24 V
RS-stocknr. 820-9750
FabrikantnummerAD8418AWBRMZ
FabrikantAnalog Devices
2,52 €
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
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. 191-6966
FabrikantnummerMAX4373FEUA+
FabrikantMaxim Integrated
2,468 €
Each (In a Pack of 5)
Aantal stuks
Single 2.7 → 28 V - 85 (Typ.)dB 1 Voltage 100 μA Surface Mount μMAX 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 28 V
RS-stocknr. 190-6383
FabrikantnummerMAX44284FAUT+T
FabrikantMaxim Integrated
1,37 €
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. 190-4387
FabrikantnummerMAX9922EUB+
FabrikantMaxim Integrated
2,089 €
Each (In a Tube of 50)
Aantal stuks
Single 2.85 → 5.5 V - 121dB 1 Rail to Rail 1500 μA Surface Mount μMAX 10 3.16 x 3.12 x 0.95mm 0.95mm 3.16mm 5.5 V
RS-stocknr. 145-6618
FabrikantnummerLMP8602QMA/NOPB
1,587 €
Each (In a Tube of 95)
Aantal stuks
Single 5 V - 90dB 1 Bidirectional 1.3 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 60 V
RS-stocknr. 122-0315
FabrikantnummerZXCT1082E5TA
FabrikantDiodesZetex
0,611 €
Each (On a Reel of 3000)
Aantal stuks
- 2.7 to 60 V - 80dB - - - - - - - - - -
RS-stocknr. 122-3297
FabrikantnummerZXCT1020E5TA
FabrikantDiodesZetex
0,492 €
Each (On a Reel of 3000)
Aantal stuks
Single 2.5 → 20 V - - 1 Low Offset Current 35 μA Surface Mount SOT-23 5 3.1 x 1.8 x 1.3mm 1.3mm 3.1mm 20 V
RS-stocknr. 185-8086
FabrikantnummerNCS210RSQT2G
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. 100-3849
FabrikantnummerINA139NA/250
1,131 €
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. 190-6285
FabrikantnummerMAX4172EUA+
FabrikantMaxim Integrated
2,85 €
Each (In a Pack of 5)
Aantal stuks
Single 3 → 32 V - - 1 Unidirectional 1.6 mA Surface Mount μMAX 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 32 V
RS-stocknr. 165-6638
FabrikantnummerTSC1031IPT
0,855 €
Each (On a Reel of 4000)
Aantal stuks
Dual, Single 2.9 → 70 V -2.1 → 65V 90dB 1 Buffered 480 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V
RS-stocknr. 197-7162
FabrikantnummerINA138NA/250
1,13 €
Each (On a Reel of 250)
Aantal stuks
Single 5 V - 100dB 1 Current - - SOT-23 5 - - - -
RS-stocknr. 922-8241
FabrikantnummerZXCT1087E5TA
FabrikantDiodesZetex
0,55 €
Each (On a Reel of 3000)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 709-7076
FabrikantnummerAD8215YRZ
FabrikantAnalog Devices
2,62 €
Each
Aantal stuks
Single 5 V - 80dB 1 - - Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V
RS-stocknr. 545-7631
FabrikantnummerINA195AIDBVT
2,808 €
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