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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รายละเอียดสินค้า / Description ราคา / 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. 163-0173
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.NCS199A3SQT2G
THB10.59
Each (On a Reel of 3000)
Units
Single 2.7 → 26 V - 100dB 1 Rail to Rail 5 mA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V
RS Stock No. 920-9846
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.NCS199A3SQT2G
THB22.26
Each: (In a Pack of 10)
Units
Single 2.7 → 26 V - 100dB 1 Rail to Rail 5 mA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V
RS Stock No. 661-3352
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.INA200AIDGKT
THB80.81
Each: (In a Pack of 5)
Units
- - - - - - - Surface Mount MSOP 8 3 x 3 x 0.97mm 0.97mm 3mm -
RS Stock No. 825-3094
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.INA200AIDGKR
THB74.09
Each: (In a Pack of 5)
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. 921-3006
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.INA200AIDGKR
THB49.523
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. 540-3791
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MAX4172ESA+
Brand :Maxim
THB94.03
Each
Units
Single 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - - 1 - 1.6 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 32 V
RS Stock No. 146-1151
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.MAX4172ESA+
Brand :Maxim
THB127.187
Each (In a Tube of 100)
Units
Single 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - - 1 - 1.6 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 32 V
RS Stock No. 154-7664
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LTC6101BCS5#TRMPBF
THB82.032
Each (On a Reel of 500)
Units
Single 4 → 60 V 4 → 60V - 1 Unidirectional 0.64 mA Surface Mount TSOT-23 5 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 60 V
RS Stock No. 761-9614
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LTC6101BCS5#TRMPBF
THB98.94
Each
Units
Single 4 → 60 V 4 → 60V - 1 Unidirectional 0.64 mA Surface Mount TSOT-23 5 2.9 x 1.75 x 0.9mm 0.9mm 2.9mm 60 V
RS Stock No. 461-6586
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.INA169NA/250
THB76.73
Each
Units
Single 12 V, 15 V, 18 V, 24 V, 28 V, 3 V, 5 V, 9 V - 100dB 1 - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 60 V
RS Stock No. 860-7505
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CS30AL
THB27.274
Each: (In a Pack of 5)
Units
Single 2.8 → 30 V - - 2 Single Ended - Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm -
RS Stock No. 168-8815
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.CS30AL
THB24.619
Each (On a Reel of 3000)
Units
Single 2.8 → 30 V - - 2 Single Ended - Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm -
RS Stock No. 825-3088
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.INA219AIDCNR
THB62.53
Each: (In a Pack of 5)
Units
Single 6 V - 100dB 1 Digital 5 mA Surface Mount SOT-23 8 3 x 1.75 x 1.3mm 1.3mm 3mm 5.5 V
RS Stock No. 121-9260
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.INA210AIDCKT
THB31.20
Each (On a Reel of 250)
Units
Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V - 105dB 1 - - Surface Mount SC-70 6 2 x 1.25 x 0.9mm 0.9mm 2mm 26 V
RS Stock No. 817-6534
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.INA199A2DCKT
THB25.894
Each: (In a Pack of 5)
Units
Single 2.7 → 26 V - 100dB 1 Bidirectional 100 μA Surface Mount SC-70 6 2.15 x 1.4 x 1mm 1mm 2.15mm 26 V
RS Stock No. 709-4529
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.INA210AIDCKT
THB47.38
Each
Units
Single 12 V, 15 V, 18 V, 24 V, 3 V, 5 V, 9 V - 105dB 1 - - Surface Mount SC-70 6 2 x 1.25 x 0.9mm 0.9mm 2mm 26 V
RS Stock No. 162-8163
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.INA199A2DCKT
THB15.932
Each (On a Reel of 250)
Units
Single 2.7 → 26 V - 100dB 1 Bidirectional 100 μA Surface Mount SC-70 6 2.15 x 1.4 x 1mm 1mm 2.15mm 26 V
RS Stock No. 730-0556
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.INA219BIDCNT
THB83.95
Each
Units
- - - - - - - Surface Mount SOT-23 8 3 x 1.75 x 1.3mm 1.3mm 3mm -
RS Stock No. 121-9269
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.INA219BIDCNT
THB52.602
Each (On a Reel of 250)
Units
- - - - - - - Surface Mount SOT-23 8 3 x 1.75 x 1.3mm 1.3mm 3mm -
RS Stock No. 423-472
หมายเลขชิ้นส่วนของผู้ผลิต / Mfr. Part No.LTC6102CMS8#PBF
THB124.48
Each
Units
Single 12 V, 15 V, 18 V, 24 V, 28 V, 5 V, 9 V - - 1 - 0.45 mA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 60 V
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