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 41 - 60 of 393 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. 811-5807
Mfr. Part No.LMP8640MKE-F/NOPB
HK$19.17
Each (In a Pack of 5)
units
Dual - ±12 V, ±2.7 V, ±5 V 103dB 1 Buffered 800 μA Surface Mount SOT-23 6 3.05 x 1.75 x 1mm 1mm 3.05mm 12 V
New
RS Stock No. 197-7174
Mfr. Part No.INA213AIDCKT
HK$8.888
Each (On a Reel of 250)
units
Single 5 V - 100dB 1 Voltage - - SC-70 6 - - - -
RS Stock No. 145-7041
Mfr. Part No.LTC6102HMS8#PBF
HK$32.519
Each (In a Tube of 50)
units
Single 12 V - - 1 - 675 μA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 60 V
New
RS Stock No. 197-7176
Mfr. Part No.INA213AIDCKT
HK$11.149
Each (In a Pack of 10)
units
Single 5 V - 100dB 1 Voltage - - SC-70 6 - - - -
RS Stock No. 921-3006
Mfr. Part No.INA200AIDGKR
HK$10.661
Each (On a Reel of 2500)
units
Single 12 V - 80dB 1 Analogue 5 mA Surface Mount VSSOP 8 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 18 V
RS Stock No. 185-8847
Mfr. Part No.NCS199A3RSQT2G
HK$5.984
Each (In a Pack of 10)
units
Single 2.2 → 26 V - 100dB 1 Rail to Rail 60 μA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V
RS Stock No. 145-6632
Mfr. Part No.AD8418WBRMZ
HK$17.541
Each (In a Tube of 50)
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. 423-478
Mfr. Part No.LTC6104CMS8#PBF
HK$31.77
Each
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. 185-8909
Mfr. Part No.NCV210RSQT2G
HK$8.199
Each (In a Pack of 9)
units
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 Stock No. 697-7224
Mfr. Part No.AD8210WYRZ
HK$42.96
Each
units
Single 5 V - - 1 - - Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V
RS Stock No. 121-9343
Mfr. Part No.LMP8640MKE-F/NOPB
HK$13.01
Each (On a Reel of 250)
units
Dual - ±12 V, ±2.7 V, ±5 V 103dB 1 Buffered 800 μA Surface Mount SOT-23 6 3.05 x 1.75 x 1mm 1mm 3.05mm 12 V
RS Stock No. 121-7249
Mfr. Part No.ISL28023FR12Z-T7A
BrandIntersil
HK$53.82
Each (In a Pack of 2)
units
Single 3.3 V - 136dB 2 Open Drain 1.24 mA Surface Mount QFN 24 4 x 4 x 0.85mm 0.85mm 4mm 5.5 V
RS Stock No. 901-3967
Mfr. Part No.Si8920AC-IP
HK$30.94
Each (In a Pack of 2)
units
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
RS Stock No. 190-4343
Mfr. Part No.MAX44284FAUT+T
HK$9.775
Each (On a Reel of 2500)
units
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 Stock No. 923-7917
Mfr. Part No.MAX4080SASA+
HK$14.193
Each (In a Tube of 100)
units
- - - - - - - - - - - - - -
RS Stock No. 732-8437
Mfr. Part No.MAX4372TEUK+T
HK$16.922
Each (In a Pack of 5)
units
Single 2.7 → 28 V - - 1 Differential 0.06 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 28 V
RS Stock No. 786-1379
Mfr. Part No.MAX9928FAUA+
HK$16.86
Each (In a Pack of 2)
units
Single 2.5 → 5.5 V - 93dB 1 Bidirectional, Unidirectional 200 μA Surface Mount μMAX 8 3.05 x 3.05 x 0.95mm 0.95mm 3.05mm 5.5 V
RS Stock No. 190-4332
Mfr. Part No.MAX4378TAUD+
HK$19.452
Each (In a Tube of 96)
units
Quad 3 → 28 V ±8V 90dB 1 Buffered 2.2 mA Surface Mount TSSOP 14 5.1 x 4.5 x 0.95mm 0.95mm 5.1mm 28 V
RS Stock No. 121-9718
Mfr. Part No.INA220AIDGST
HK$13.86
Each (On a Reel of 250)
units
Single 3 → 5.5 V - 100dB 1 Bidirectional 1 mA Surface Mount VSSOP 10 3.1 x 3.1 x 0.95mm 0.95mm 3.1mm 5.5 V
RS Stock No. 190-4327
Mfr. Part No.MAX4373FEUA+T
HK$15.512
Each (On a Reel of 2500)
units
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