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 1 - 20 of 371 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. 817-6580
Mfr. Part No.INA219AID
$4.348
Each (In a Pack of 5)
units
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 Stock No. 145-7636
Mfr. Part No.INA219AID
$3.36
Each (In a Tube of 75)
units
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 Stock No. 165-5536
Mfr. Part No.IR25750LTRPBF
BrandInfineon
$0.47
Each (On a Reel of 3000)
units
Single -5 → 600 V - - 1 Single Ended - Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 600 V
RS Stock No. 879-3375
Mfr. Part No.IR25750LTRPBF
BrandInfineon
$0.893
Each (In a Pack of 10)
units
Single -5 → 600 V - - 1 Single Ended - Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 600 V
RS Stock No. 145-1310
Mfr. Part No.LT1999IMS8-20#PBF
$5.10
Each (In a Tube of 50)
units
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 Stock No. 162-8573
Mfr. Part No.INA219AIDCNR
$1.76
Each (On a Reel of 3000)
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. 825-3088
Mfr. Part No.INA219AIDCNR
$4.05
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. 822-5844
Mfr. Part No.LT1999IMS8-20#PBF
$7.48
Each (In a Pack of 2)
units
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 Stock No. 817-6546
Mfr. Part No.INA199A3DCKT
$0.91
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. 162-8164
Mfr. Part No.INA199A3DCKT
$0.926
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. 795-9259
Mfr. Part No.TSC103IPT
$3.14
Each (In a Pack of 2)
units
Dual, Single 2.9 → 70 V -2.1 → 65V 90dB 1 Buffered 480 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V
RS Stock No. 168-7760
Mfr. Part No.TSC103IPT
$1.40
Each (On a Reel of 4000)
units
Dual, Single 2.9 → 70 V -2.1 → 65V 90dB 1 Buffered 480 μA Surface Mount TSSOP 8 4.5 x 3.1 x 1.05mm 1.05mm 4.5mm 5.5 V
RS Stock No. 923-6905
Mfr. Part No.INA211AIDCKT
$1.21
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. 154-920
Mfr. Part No.ZXCT1009FTA
$1.512
Each (In a Pack of 5)
units
- 2.5 → 20 V - - - - - Surface Mount SOT-23 3 3.05 x 1.4 x 1mm 1mm 3.05mm -
RS Stock No. 145-7041
Mfr. Part No.LTC6102HMS8#PBF
$5.391
Each (In a Tube of 50)
units
Single 12 V - - 1 - 675 μA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 60 V
RS Stock No. 506-0417
Mfr. Part No.LT1787HVCS8#PBF
$10.47
Each
units
Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - - 1 - 0.12 mA Surface Mount SOIC 8 5 x 3.99 x 1.48mm 1.48mm 5mm 60 V
RS Stock No. 917-3520
Mfr. Part No.LT1787HVCS8#PBF
$6.468
Each (In a Tube of 100)
units
Single 3 V, 5 V, 9 V, 12 V, 15 V, 18 V, 24 V, 28 V - - 1 - 0.12 mA Surface Mount SOIC 8 5 x 3.99 x 1.48mm 1.48mm 5mm 60 V
RS Stock No. 709-4522
Mfr. Part No.INA211AIDCKT
$2.58
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. 922-7617
Mfr. Part No.ZXCT1009FTA
$0.73
Each (On a Reel of 3000)
units
- 2.5 → 20 V - - - - - Surface Mount SOT-23 3 3.05 x 1.4 x 1mm 1mm 3.05mm -
RS Stock No. 884-6775
Mfr. Part No.LTC6102HMS8#PBF
$8.20
Each (In a Pack of 2)
units
Single 12 V - - 1 - 675 μA Surface Mount MSOP 8 3 x 3 x 0.86mm 0.86mm 3mm 60 V
Related Products
Current Sense Amplifiers Analogue Output, Texas Instruments Current ...
Description:
Current Sense Amplifiers Analogue Output, Texas Instruments Current and power measurement for real-time system protection, feedback control and high-accuracy system monitoring Current and power measurement for real-time system protection, feedback control and high-accuracy system monitoring.
Current Sense Amplifiers Analogue Output, Texas Instruments Current ...
Description:
Current Sense Amplifiers Analogue Output, Texas Instruments Current and power measurement for real-time system protection, feedback control and high-accuracy system monitoring Current and power measurement for real-time system protection, feedback control and high-accuracy system monitoring.
Current Sense Amplifiers (Analogue Output) with Comparator, Texas ...
Description:
Current Sense Amplifiers (Analogue Output) with Comparator, Texas Instruments Current and power measurement for real-time system protection, feedback control and high-accuracy system monitoring Current and power measurement for real-time system protection, feedback control and high-accuracy system monitoring.
4mA-to-20mA Current-Loop, Texas Instruments Current loop systems are ...
Description:
4mA-to-20mA Current-Loop, Texas Instruments Current loop systems are used in electrically noisy industrial environments for sending analogue sensor data over long distances of 300m or more.