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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Beskrivning Pris 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-artikelnummer 820-9390
Tillv. art.nrAD8418BRMZ
VarumärkeAnalog Devices
22,582 kr
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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-artikelnummer 160-8581
Tillv. art.nrAD8418BRMZ
VarumärkeAnalog Devices
18,337 kr
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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-artikelnummer 160-9848
Tillv. art.nrAD8418AWBRMZ
VarumärkeAnalog Devices
20,064 kr
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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-artikelnummer 820-9750
Tillv. art.nrAD8418AWBRMZ
VarumärkeAnalog Devices
26,304 kr
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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-artikelnummer 921-3006
Tillv. art.nrINA200AIDGKR
VarumärkeTexas Instruments
10,709 kr
Each (On a Reel of 2500)
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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-artikelnummer 661-3352
Tillv. art.nrINA200AIDGKT
VarumärkeTexas Instruments
25,126 kr
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- - - - - - - Surface Mount MSOP 8 3 x 3 x 0.97mm 0.97mm 3mm -
RS-artikelnummer 825-3094
Tillv. art.nrINA200AIDGKR
VarumärkeTexas Instruments
22,148 kr
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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-artikelnummer 145-1310
Tillv. art.nrLT1999IMS8-20#PBF
VarumärkeAnalog Devices
37,569 kr
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Single 4.5 5.5 V - 80dB 1 Buffered, Rail to Rail 7.1 mA Surface Mount MSOP 8 3 x 3 x 0.9984mm 0.998mm 3mm 5.5 V
RS-artikelnummer 732-8380
Tillv. art.nrMAX4070AUA+
VarumärkeMaxim Integrated
18,10 kr
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Single 2.7 → 24 V - 100dB 1 Rail to Rail 0.25 mA Surface Mount μMAX 8 3.05 x 3.05 x 0.95mm 0.95mm 3.05mm 24 V
RS-artikelnummer 165-9205
Tillv. art.nrMAX4070AUA+
VarumärkeMaxim Integrated
15,828 kr
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Single 2.7 → 24 V - 100dB 1 Rail to Rail 0.25 mA Surface Mount μMAX 8 3.05 x 3.05 x 0.95mm 0.95mm 3.05mm 24 V
RS-artikelnummer 822-5844
Tillv. art.nrLT1999IMS8-20#PBF
VarumärkeAnalog Devices
47,10 kr
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Single 4.5 5.5 V - 80dB 1 Buffered, Rail to Rail 7.1 mA Surface Mount MSOP 8 3 x 3 x 0.9984mm 0.998mm 3mm 5.5 V
RS-artikelnummer 921-2940
Tillv. art.nrINA282AID
VarumärkeTexas Instruments
26,954 kr
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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-artikelnummer 817-6603
Tillv. art.nrINA282AID
VarumärkeTexas Instruments
31,33 kr
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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-artikelnummer 169-0204
Tillv. art.nrSI8920BC-IP
VarumärkeSilicon Labs
31,744 kr
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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-artikelnummer 177-7171
Tillv. art.nrLTC6102IMS8#PBF
VarumärkeAnalog Devices
33,63 kr
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Single 5 100 V - - 1 Rail to Rail 650 μA Surface Mount MSOP 8 3 x 3 x 0.9984mm 0.998mm 3mm 100 V
RS-artikelnummer 829-1544
Tillv. art.nrTSC1021BIYPT
VarumärkeSTMicroelectronics
4,686 kr
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Single - - 90dB 2 Analogue 450 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V dc
RS-artikelnummer 811-5793
Tillv. art.nrLMP8602QMA/NOPB
VarumärkeTexas Instruments
36,666 kr
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Single 5 V - 90dB 1 Bidirectional 1.3 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 60 V
RS-artikelnummer 121-9260
Tillv. art.nrINA210AIDCKT
VarumärkeTexas Instruments
9,111 kr
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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-artikelnummer 540-3791
Tillv. art.nrMAX4172ESA+
VarumärkeMaxim Integrated
27,61 kr
Each
Enheter
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-artikelnummer 922-8238
Tillv. art.nrZXCT1107SA-7
VarumärkeDiodesZetex
3,455 kr
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