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 381 - 394 of 394 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. 709-9117
Mfr. Part No.INA214AIDCKT
$2.35
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. 189-7273
Mfr. Part No.MAX4070AUA+
$3.211
Each (In a Tube of 50)
units
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 Stock No. 190-6368
Mfr. Part No.MAX4073TAUT+T
$2.69
Each (In a Pack of 5)
units
Single 3 → 28 V - 90 (Typ.)dB 1 Voltage 1.2 mA Surface Mount SOT-23 6 3 x 1.75 x 1.3mm 1.3mm 3mm 28 V
RS Stock No. 732-7885
Mfr. Part No.MAX4080FASA+
$3.53
Each
units
Single 4.5 → 76 V - 100dB 1 Rail to Rail 0.19 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 76 V
RS Stock No. 185-8097
Mfr. Part No.NCV210RSQT2G
$0.568
Each (On a Reel of 3000)
units
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
RS Stock No. 165-9308
Mfr. Part No.MAX4372FESA+
$2.45
Each (In a Tube of 100)
units
Single 2.7 → 28 V - - 1 Differential 0.06 mA Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 28 V
RS Stock No. 190-4326
Mfr. Part No.MAX4372TESA+
$2.77
Each (In a Tube of 100)
units
Single 2.7 → 28 V - 85 (Typ.)dB 1 Voltage 60 μA Surface Mount SO 8 5 x 4 x 1.5mm 1.5mm 5mm 28 V
RS Stock No. 732-8437
Mfr. Part No.MAX4372TEUK+T
$3.676
Each (In a Pack of 5)
units
Single 2.7 → 28 V - - 1 Differential 0.06 mA Surface Mount SOT-23 5 3 x 1.75 x 1.3mm 1.3mm 3mm 28 V
RS Stock No. 709-5636
Mfr. Part No.AD22057RZ
$21.17
Each
units
Single 5 V - 80dB 1 - - Surface Mount SOIC 8 5 x 4 x 1.5mm 1.5mm 5mm 36 V
RS Stock No. 190-6392
Mfr. Part No.MAX4080SASA+T
$3.23
Each (In a Pack of 5)
units
Single 4.5 → 76 V - 100dB 1 Voltage 190 μA Surface Mount SO 8 5 x 4 x 1.5mm 1.5mm 5mm 76 V
RS Stock No. 820-9390
Mfr. Part No.AD8418BRMZ
$3.79
Each (In a Pack of 5)
units
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 Stock No. 190-6317
Mfr. Part No.MAX4372TESA+
$3.40
Each (In a Pack of 5)
units
Single 2.7 → 28 V - 85 (Typ.)dB 1 Voltage 60 μA Surface Mount SO 8 5 x 4 x 1.5mm 1.5mm 5mm 28 V
RS Stock No. 178-4566
Mfr. Part No.NCS210RMUTAG
$1.06
Each (In a Pack of 50)
units
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
RS Stock No. 921-2959
Mfr. Part No.INA286AID
$4.512
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
Related Products
Current Sense Power / Current Monitors, Texas Instruments ...
Description:
Current Sense Power / Current Monitors, 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.
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.