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. 761-6334
FabrikantnummerLMP8603MA/NOPB
4,04 €
Each
Aantal stuks
Single 5 V - 80dB 1 Bidirectional, Differential, Rail to Rail, Unidirectional 1.3 mA Surface Mount SOIC 8 3 x 3 x 0.86mm 0.86mm 3mm 5.5 V
RS-stocknr. 160-9876
FabrikantnummerAD8418ABRMZ-RL
FabrikantAnalog Devices
1,257 €
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. 835-3793
FabrikantnummerAD8418ABRMZ-RL
FabrikantAnalog Devices
2,577 €
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. 820-9393
FabrikantnummerAD8417BRMZ
FabrikantAnalog Devices
2,502 €
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. 190-6353
FabrikantnummerMAX4376FAUK+T
FabrikantMaxim Integrated
2,064 €
Each (In a Pack of 5)
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. 189-7297
FabrikantnummerMAX4080TASA+
FabrikantMaxim Integrated
1,698 €
Each (In a Tube of 100)
Aantal stuks
Single 4.5 → 76 V - 100dB 1 Rail to Rail 0.19 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 76 V
RS-stocknr. 922-3322
FabrikantnummerINA200AIDGKT
1,644 €
Each (On a Reel of 250)
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 189-7306
FabrikantnummerMAX4173FEUT+T
FabrikantMaxim Integrated
1,51 €
Each (On a Reel of 2500)
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. 189-7319
FabrikantnummerMAX4373FESA+
FabrikantMaxim Integrated
1,797 €
Each (In a Tube of 100)
Aantal stuks
Single 2.7 → 28 V - 85dB 1 Differential 100 μA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 28 V
RS-stocknr. 545-7625
FabrikantnummerINA194AIDBVT
3,002 €
Each (In a Pack of 5)
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. 190-6368
FabrikantnummerMAX4073TAUT+T
FabrikantMaxim Integrated
1,782 €
Each (In a Pack of 5)
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
Nieuw
RS-stocknr. 210-9079
FabrikantnummerTSC2012IYST
1,086 €
Each (On a Reel of 4000)
Aantal stuks
Single 5.5 V - 115 1 Rail to Rail - - Mini SO-8 8 - - - -
RS-stocknr. 661-3407
FabrikantnummerXTR111AIDGQT
2,24 €
Each
Aantal stuks
- - - - - - - Surface Mount HTSSOP 10 3 x 3 x 1.02mm 1.02mm 3mm -
RS-stocknr. 761-9626
FabrikantnummerLTC6101HVACS5#TRMPBF
FabrikantAnalog Devices
3,86 €
Each
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. 189-7307
FabrikantnummerMAX4173TESA+
FabrikantMaxim Integrated
1,11 €
Each (In a Tube of 100)
Aantal stuks
Single 3 → 28 V - 90dB 1 Differential 1 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 28 V
RS-stocknr. 190-4389
FabrikantnummerMAX9938FEUK+T
FabrikantMaxim Integrated
0,664 €
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. 190-6356
FabrikantnummerMAX4071AUA+
FabrikantMaxim Integrated
2,04 €
Each (In a Pack of 5)
Aantal stuks
Single 2.7 → 24 V - 100dB 1 Bidirectional 250 μA Surface Mount μMAX 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 24 V
RS-stocknr. 190-6433
FabrikantnummerMAX9938FEUK+T
FabrikantMaxim Integrated
1,294 €
Each (In a Pack of 5)
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
Nieuw
RS-stocknr. 210-9080
FabrikantnummerTSC2012IYST
2,494 €
Each (In a Pack of 5)
Aantal stuks
Single 5.5 V - 115 1 Rail to Rail - - Mini SO-8 8 - - - -
RS-stocknr. 189-7365
FabrikantnummerMAX9919NASA+
FabrikantMaxim Integrated
1,388 €
Each (In a Tube of 100)
Aantal stuks
Single 4.5 → 5.5 V - 80dB 1 Rail to Rail 2.2 mA Surface Mount SOIC 8 4.98 x 3.99 x 1.58mm 1.58mm 4.98mm 5.5 V