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. 168-8817
FabrikantnummerCS30BL
€ 0,535
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. 860-7514
FabrikantnummerCS30BL
€ 1,02
Each (In a Pack of 5)
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. 829-1544
FabrikantnummerTSC1021BIYPT
€ 1,038
Each (In a Pack of 5)
Aantal stuks
Single - - 90dB 2 Analogue 450 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V dc
RS-stocknr. 795-8634
FabrikantnummerTSC1031IPT
€ 2,31
Each (In a Pack of 5)
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. 426-269
FabrikantnummerTSC101CILT
€ 1,644
Each (In a Pack of 5)
Aantal stuks
Single 5 V, 9 V, 12 V, 15 V, 18 V - 90dB 1 - 0.3 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 24 V
RS-stocknr. 168-8818
FabrikantnummerCS30CL
€ 0,436
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. 168-8815
FabrikantnummerCS30AL
€ 0,436
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. 860-7505
FabrikantnummerCS30AL
€ 1,054
Each (In a Pack of 5)
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. 165-6638
FabrikantnummerTSC1031IPT
€ 1,585
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. 168-7749
FabrikantnummerTSC102IPT
€ 0,637
Each (On a Reel of 4000)
Aantal stuks
Single 2.8 → 30 V - 90dB 1 - 700 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V
RS-stocknr. 168-7760
FabrikantnummerTSC103IPT
€ 1,304
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. 795-9259
FabrikantnummerTSC103IPT
€ 2,23
Each (In a Pack of 2)
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. 168-8082
FabrikantnummerTSC1021BIYPT
€ 0,536
Each (On a Reel of 4000)
Aantal stuks
Single - - 90dB 2 Analogue 450 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V dc
RS-stocknr. 860-7517
FabrikantnummerCS30CL
€ 1,034
Each (In a Pack of 5)
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. 166-0789
FabrikantnummerTSC101CILT
€ 1,02
Each (On a Reel of 3000)
Aantal stuks
Single 5 V, 9 V, 12 V, 15 V, 18 V - 90dB 1 - 0.3 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 24 V
RS-stocknr. 920-6317
FabrikantnummerTSC101AILT
€ 0,554
Each (On a Reel of 3000)
Aantal stuks
Single 5 V, 9 V, 12 V, 15 V, 18 V - 90dB 1 - 0.3 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 24 V
RS-stocknr. 920-6311
FabrikantnummerTSC101BILT
€ 0,588
Each (On a Reel of 3000)
Aantal stuks
Single 5 V, 9 V, 12 V, 15 V, 18 V - 90dB 1 - 0.3 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 24 V
RS-stocknr. 165-5719
FabrikantnummerTSC1021AIYPT
€ 0,564
Each (On a Reel of 4000)
Aantal stuks
Single - - 90dB 2 Analogue 450 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V dc
RS-stocknr. 426-190
FabrikantnummerTSC101AILT
€ 1,306
Each (In a Pack of 5)
Aantal stuks
Single 5 V, 9 V, 12 V, 15 V, 18 V - 90dB 1 - 0.3 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 24 V
RS-stocknr. 829-1541
FabrikantnummerTSC1021AIYPT
€ 1,102
Each (In a Pack of 10)
Aantal stuks
Single - - 90dB 2 Analogue 450 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V dc