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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Part Details Brand 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 Width Minimum Operating Supply Voltage Maximum Operating Temperature Minimum Operating Temperature
NCS210RMUTAG ON Semiconductor, Current Sense Amplifier Single Rail to Rail 10-Pin UQFN
  • £ 0.215
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ON Semiconductor Single 5 V - 105dB 1 Rail to Rail 80 μA Surface Mount UQFN 10 1.4 x 1.8 x 0.55mm 0.55mm 1.4mm 26 V 1.8mm 2.2 V +125 °C -40 °C
NCS213RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70
  • £ 0.215
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ON Semiconductor Single 5 V - 100dB 1 Rail to Rail 80 μA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V 1.35mm 2.2 V +125 °C -40 °C
NCS214RMUTAG ON Semiconductor, Current Sense Amplifier Single Rail to Rail 10-Pin UQFN
  • £ 0.215
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ON Semiconductor Single 5 V - 105dB 1 Rail to Rail 80 μA Surface Mount UQFN 10 1.4 x 1.8 x 0.55mm 0.55mm 1.4mm 26 V 1.8mm 2.2 V +125 °C -40 °C
NCS199A1RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70
  • £ 0.215
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ON Semiconductor Single 5 V - 100dB 1 Rail to Rail 80 μA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V 1.35mm 2.2 V +125 °C -40 °C
NCS199A1RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70 ON Semiconductor Single 5 V - 100dB 1 Rail to Rail 80 μA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V 1.35mm 2.2 V +125 °C -40 °C
NCS199A2RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70
  • £ 0.223
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ON Semiconductor 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 1.35mm 2.2 V +125 °C -40 °C
NCS199A2RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70 ON Semiconductor 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 1.35mm 2.2 V +125 °C -40 °C
NCS199A3RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70
  • £ 0.223
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ON Semiconductor 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 1.35mm 2.2 V +125 °C -40 °C
NCS199A3RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70 ON Semiconductor 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 1.35mm 2.2 V +125 °C -40 °C
NCS210RMUTAG ON Semiconductor, Current Sense Amplifier Single Rail to Rail 10-Pin UQFN ON Semiconductor Single 5 V - 105dB 1 Rail to Rail 80 μA Surface Mount UQFN 10 1.4 x 1.8 x 0.55mm 0.55mm 1.4mm 26 V 1.8mm 2.2 V +125 °C -40 °C
NCS210RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70
  • £ 0.223
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ON Semiconductor 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 1.35mm 2.2 V +125 °C -40 °C
NCS210RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70 ON Semiconductor 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 1.35mm 2.2 V +125 °C -40 °C
NCS213RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70 ON Semiconductor Single 5 V - 100dB 1 Rail to Rail 80 μA Surface Mount SC-70 6 2.2 x 1.35 x 1mm 1mm 2.2mm 26 V 1.35mm 2.2 V +125 °C -40 °C
NCS214RMUTAG ON Semiconductor, Current Sense Amplifier Single Rail to Rail 10-Pin UQFN ON Semiconductor Single 5 V - 105dB 1 Rail to Rail 80 μA Surface Mount UQFN 10 1.4 x 1.8 x 0.55mm 0.55mm 1.4mm 26 V 1.8mm 2.2 V +125 °C -40 °C
NCS214RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70
  • £ 0.223
  • Each (On a Reel of 3000)
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ON Semiconductor 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 1.35mm 2.2 V +125 °C -40 °C
NCS214RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70 ON Semiconductor 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 1.35mm 2.2 V +125 °C -40 °C
NCV210RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70
  • £ 0.252
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ON Semiconductor 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 1.35mm 2.2 V +125 °C -40 °C
NCV210RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70 ON Semiconductor 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 1.35mm 2.2 V +125 °C -40 °C
NCV213RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70
  • £ 0.252
  • Each (On a Reel of 3000)
  • Check Stock Levels
  • Compare
ON Semiconductor 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 1.35mm 2.2 V +125 °C -40 °C
NCV213RSQT2G ON Semiconductor, Current Sense Amplifier Single Rail to Rail 6-Pin SC-70 ON Semiconductor 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 1.35mm 2.2 V +125 °C -40 °C
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