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. 


...
Read more Read less

Filters

Viewing 1 - 20 of 80 products
Results per page
Description Price 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 Stock No. 423-478
Mfr. Part No.LTC6104CMS8#PBF
PHP202.73
Each
units
Single 12 V, 15 V, 18 V, 24 V, 28 V, 5 V, 9 V - - 1 - 1.04 mA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 60 V
RS Stock No. 145-7057
Mfr. Part No.LTC6104CMS8#PBF
PHP108.822
Each (In a Tube of 50)
units
Single 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - - 1 - 1.04 mA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 60 V
RS Stock No. 506-0417
Mfr. Part No.LT1787HVCS8#PBF
PHP316.72
Each
units
Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - - 1 - 0.12 mA Surface Mount SOIC 8 5 x 3.99 x 1.48mm 1.48mm 5mm 60 V
RS Stock No. 917-3520
Mfr. Part No.LT1787HVCS8#PBF
PHP216.547
Each (In a Tube of 100)
units
Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - - 1 - 0.12 mA Surface Mount SOIC 8 5 x 3.99 x 1.48mm 1.48mm 5mm 60 V
RS Stock No. 761-8894
Mfr. Part No.LT6105IMS8#PBF
PHP129.36
Each
units
Single 36 V - 90dB 1 Differential 0.35 mA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 36 V
RS Stock No. 160-9875
Mfr. Part No.AD8417WBRZ
PHP100.146
Each (In a Tube of 98)
units
Single 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 Stock No. 183-1913
Mfr. Part No.AD8417WHRMZ
PHP192.40
Each (In a Pack of 5)
units
Single 2.7 → 5.5 V - 90dB 1 Buffered - Surface Mount MSOP 8 3.2 x 3.2 x 0.95mm 0.95mm 3.2mm 5.5 V
RS Stock No. 820-9750
Mfr. Part No.AD8418AWBRMZ
PHP120.892
Each (In a Pack of 5)
units
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 Stock No. 912-6215
Mfr. Part No.AD8210WYRZ
PHP202.13
Each (In a Tube of 98)
units
Single 5 V - - 1 - - Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V
RS Stock No. 145-0965
Mfr. Part No.LT6105CMS8#PBF
PHP83.25
Each (In a Tube of 50)
units
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 Stock No. 145-7168
Mfr. Part No.AD8212YRMZ
PHP122.425
Each (In a Tube of 50)
units
Single 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - - 1 - 1.5 mA Surface Mount MSOP 8 3 x 3 x 0.85mm 0.85mm 3mm 65 V
RS Stock No. 822-6657
Mfr. Part No.LTC4151IDD#PBF
PHP255.78
Each
units
Single 4.5 → 5.5 V - - 1 Open Collector 1.7 mA Surface Mount DFN 10 3 x 3 x 0.7mm 0.7mm 3mm 80 V
RS Stock No. 158-5274
Mfr. Part No.AD22057RZ
PHP550.222
Each (In a Tube of 98)
units
Single 5 V - 80dB 1 - - Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 36 V
RS Stock No. 160-9876
Mfr. Part No.AD8418ABRMZ-RL
PHP86.921
Each (On a Reel of 3000)
units
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 Stock No. 786-9727
Mfr. Part No.LT6106HS5#TRMPBF
PHP90.61
Each (In a Pack of 5)
units
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 Stock No. 919-9358
Mfr. Part No.LT6106CS5#TRMPBF
PHP69.175
Each (On a Reel of 500)
units
Single 36 V - - 1 - 0.13 mA Surface Mount TSOT-23 5 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 36 V
RS Stock No. 183-1949
Mfr. Part No.AD8210YRZ-REEL7
PHP251.50
Each (In a Pack of 2)
units
Single 5 V - 100dB 1 Single Ended - Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V
RS Stock No. 912-7163
Mfr. Part No.AD8210YRZ
PHP169.929
Each (In a Tube of 98)
units
Single 5 V - 120 1 Bidirectional - Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V
RS Stock No. 786-9718
Mfr. Part No.LT6100IMS8#PBF
PHP116.405
Each (In a Pack of 2)
units
Single 2.7 → 36 V - 100dB 1 Differential 145 μA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 36 V
RS Stock No. 155-9341
Mfr. Part No.LT6108IMS8-2#PBF
PHP126.779
Each (In a Tube of 50)
units
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