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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Omschrijving Prijs 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-stocknr. 162-6300
FabrikantnummerLMP8601MA/NOPB
2,603 €
Each (In a Tube of 95)
Aantal stuks
Single 5 V - 80dB 1 Bidirectional, Differential, Rail to Rail, Unidirectional 1.3 mA Surface Mount SOIC 8 4.9 x 3.9 x 1.45mm 1.45mm 4.9mm 5.5 V
RS-stocknr. 761-6328
FabrikantnummerLMP8601MA/NOPB
2,88 €
Each
Aantal stuks
Single 5 V - 80dB 1 Bidirectional, Differential, Rail to Rail, Unidirectional 1.3 mA Surface Mount SOIC 8 4.9 x 3.9 x 1.45mm 1.45mm 4.9mm 5.5 V
RS-stocknr. 730-0556
FabrikantnummerINA219BIDCNT
2,31 €
Each
Aantal stuks
- - - - - - - Surface Mount SOT-23 8 3 x 1.75 x 1.3mm 1.3mm 3mm -
RS-stocknr. 121-9269
FabrikantnummerINA219BIDCNT
1,578 €
Each (On a Reel of 250)
Aantal stuks
- - - - - - - Surface Mount SOT-23 8 3 x 1.75 x 1.3mm 1.3mm 3mm -
RS-stocknr. 817-6603
FabrikantnummerINA282AID
3,094 €
Each (In a Pack of 5)
Aantal stuks
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-stocknr. 921-2940
FabrikantnummerINA282AID
2,607 €
Each (In a Tube of 75)
Aantal stuks
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-stocknr. 145-7636
FabrikantnummerINA219AID
1,876 €
Each (In a Tube of 75)
Aantal stuks
Single 3 → 5.5 V - 100dB 1 Bidirectional 1 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V
RS-stocknr. 817-6580
FabrikantnummerINA219AID
2,176 €
Each (In a Pack of 5)
Aantal stuks
Single 3 → 5.5 V - 100dB 1 Bidirectional 1 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 5.5 V
RS-stocknr. 709-9117
FabrikantnummerINA214AIDCKT
2,21 €
Each
Aantal stuks
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-stocknr. 761-6334
FabrikantnummerLMP8603MA/NOPB
2,88 €
Each
Aantal stuks
Single 5 V - 80dB 1 Bidirectional, Differential, Rail to Rail, Unidirectional 1.3 mA Surface Mount SOIC 8 3 x 3 x 0.86mm 0.86mm 3mm 5.5 V
RS-stocknr. 162-6303
FabrikantnummerLMP8603MA/NOPB
2,603 €
Each (In a Tube of 95)
Aantal stuks
Single 5 V - 80dB 1 Bidirectional, Differential, Rail to Rail, Unidirectional 1.3 mA Surface Mount SOIC 8 3 x 3 x 0.86mm 0.86mm 3mm 5.5 V
RS-stocknr. 923-3713
FabrikantnummerINA193AIDBVT
1,531 €
Each (On a Reel of 250)
Aantal stuks
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-stocknr. 162-5367
FabrikantnummerINA202AIDGKT
1,617 €
Each (On a Reel of 250)
Aantal stuks
- - - - - - - Surface Mount MSOP 8 3 x 3 x 0.97mm 0.97mm 3mm -
RS-stocknr. 817-6534
FabrikantnummerINA199A2DCKT
0,732 €
Each (In a Pack of 5)
Aantal stuks
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-stocknr. 162-8163
FabrikantnummerINA199A2DCKT
0,485 €
Each (On a Reel of 250)
Aantal stuks
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-stocknr. 145-6832
FabrikantnummerINA283AID
2,781 €
Each (In a Tube of 75)
Aantal stuks
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-stocknr. 661-3365
FabrikantnummerINA202AIDGKT
2,372 €
Each (In a Pack of 5)
Aantal stuks
- - - - - - - Surface Mount MSOP 8 3 x 3 x 0.97mm 0.97mm 3mm -
RS-stocknr. 817-6607
FabrikantnummerINA283AID
3,094 €
Each (In a Pack of 5)
Aantal stuks
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-stocknr. 545-7603
FabrikantnummerINA193AIDBVT
2,194 €
Each (In a Pack of 5)
Aantal stuks
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-stocknr. 730-0552
FabrikantnummerINA216A4YFFT
1,034 €
Each (In a Pack of 5)
Aantal stuks
Single 1.8 → 5.5 V - 90dB 1 Rail to Rail 0.025 mA Surface Mount DSBGA 4 0.79 x 0.79 x 0.325mm 0.325mm 0.79mm 5.5 V