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 61 - 80 of 410 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. 169-0204
Mfr. Part No.SI8920BC-IP
£2.822
Each (In a Tube of 50)
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. 761-9620
Mfr. Part No.LTC6101HVAHMS8#PBF
£4.62
Each
Units
Single 100 V - - 1 Unidirectional 0.72 mA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 100 V
RS Stock No. 100-3849
Mfr. Part No.INA139NA/250
£0.931
Each (On a Reel of 250)
Units
Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - 100dB 1 - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 40 V
RS Stock No. 817-6607
Mfr. Part No.INA283AID
£2.812
Each (In a Pack of 5)
Units
Single 2.7 → 18 V - 120dB 1 Bidirectional 900 μA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 18 V
RS Stock No. 921-3006
Mfr. Part No.INA200AIDGKR
£0.887
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. 825-3094
Mfr. Part No.INA200AIDGKR
£1.872
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. 121-8921
Mfr. Part No.INA194AIDBVT
£1.392
Each (On a Reel of 250)
Units
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 Stock No. 920-6317
Mfr. Part No.TSC101AILT
£0.549
Each (On a Reel of 3000)
Units
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 Stock No. 461-6558
Mfr. Part No.INA139NA/250
£2.01
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 40 V
RS Stock No. 545-7625
Mfr. Part No.INA194AIDBVT
£2.038
Each (In a Pack of 5)
Units
Single 12 V, 15 V, 3 V, 5 V, 9 V - 80dB 1 - - Surface Mount SOT-23 5 2.9 x 1.6 x 1.15mm 1.15mm 2.9mm 18 V
RS Stock No. 145-6832
Mfr. Part No.INA283AID
£2.528
Each (In a Tube of 75)
Units
Single 2.7 → 18 V - 120dB 1 Bidirectional 900 μA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 18 V
RS Stock No. 661-3352
Mfr. Part No.INA200AIDGKT
£2.132
Each (In a Pack of 5)
Units
- - - - - - - Surface Mount MSOP 8 3 x 3 x 0.97mm 0.97mm 3mm -
RS Stock No. 426-190
Mfr. Part No.TSC101AILT
£1.206
Each (In a Pack of 5)
Units
Single 12 V, 15 V, 18 V, 5 V, 9 V - 90dB 1 - 0.3 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 24 V
RS Stock No. 709-9117
Mfr. Part No.INA214AIDCKT
£2.01
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. 761-9626
Mfr. Part No.LTC6101HVACS5#TRMPBF
£5.43
Each
Units
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 Stock No. 919-9354
Mfr. Part No.LT6105IMS8#PBF
£1.479
Each (In a Tube of 50)
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. 170-8232
Mfr. Part No.ISL28006FH50Z-T7A
£0.807
Each (On a Reel of 250)
Units
Single 2.7 → 28 V - 105dB 1 - 50 μA Surface Mount SOT-23 5 2.9 x 1.6 x 1.14mm 1.14mm 2.9mm 28 V
RS Stock No. 779-9482
Mfr. Part No.LT1787CS8#PBF
£4.00
Each (In a Pack of 2)
Units
Single 36 V - - 1 Bidirectional, Unidirectional 60 μA Surface Mount SOIC 8 5.004 x 3.988 x 1.498mm 1.498mm 5mm 36 V
RS Stock No. 761-8894
Mfr. Part No.LT6105IMS8#PBF
£2.21
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. 919-9569
Mfr. Part No.LTC6101HVACS5#TRMPBF
£2.121
Each (On a Reel of 500)
Units
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
Related Products
BD7830NUV is speaker amplifier IC for low-voltage drives ...
Description:
BD7830NUV is speaker amplifier IC for low-voltage drives and low power consumption audio, specialized for mobile telephones and other mobile audio devices. BTL monaural speaker amplifierCapable of high power 1.5W / 8Ω / BTL outputWide power supply voltage rangeActive / suspend modesBuilt-in anti-pop circuitBuilt-in thermal shutdown circuitApplications:Portable Data TerminalMeter for ...
The NCS214R and NCV214R (AEC- Q100 qualified) are ...
Description:
The NCS214R and NCV214R (AEC- Q100 qualified) are voltage output, current sense amplifiers that can measure voltage across shunts at common−mode voltages from −0.3 V to 26 V, independent of supply voltage. With a fixed gain of 100V/V, the low offset of the zero−drift architecture enables current sensing across the ...
Instrumentation amplifiers from Linear Technology offer a combination ...
Description:
Instrumentation amplifiers from Linear Technology offer a combination of differential inputs, high input impedance, and high precision and noise specifications. Linear Technology Instrumentation amplifiers also feature low-drift and excellent PSRR and CMRR.
Instrumentation amplifiers from Linear Technology offer a combination ...
Description:
Instrumentation amplifiers from Linear Technology offer a combination of differential inputs, high input impedance, and high precision and noise specifications. Linear Technology Instrumentation amplifiers also feature low-drift and excellent PSRR and CMRR.