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Current Sensing Amplifiers

Current sensing circuits are used to measure the voltage by the time it outputs since that is directly proportional to the flowing power current. A resistor is made available to convert the not suitable current to a small voltage and, in the end, it amplifies that perfectly. Real-time overcurrent is being protected by these devices.

What to Consider When Choosing the Right Type of Current Sensing Amplifier? 

The sort of amplifier you select will depend on several parameters, including whether the measurement will be on the high or low side. The sensing resistor can be positioned either between the load and ground or between the supply voltage and the load. The first is known as "high-side sensing," and the second is known as " low-side sensing." High voltage current sensing circuits are perfect for applications like motor control and network routers since they have input ranges of up to +76V and down to -20V. Battery life is increased and prolonged with low power current detecting amplifiers.

How Does a Current Sensing Amplifier Function?

A current detecting amplifier operates based on Ohm's law. A voltage drop known as VSENSE is produced when load current runs through a shunt resistor (Rshunt) that is present on inputs. Typically, this voltage is low to reduce power dissipation losses.

What are the Various Applications of Current Sensing Amplifiers?

Current sensing must be carried out perfectly and accurately in such applications since this is a crucial step in leveling up and optimizing the performance range of applications, such as power management and motor control. They are also found in devices where the battery or power-line monitoring is highly used, such as laptops, desktops, phones, and peripherals. These current sensing amplifier devices are critical in such applications.


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DiodesZetex
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ZXCT1107SA-7, DiodesZetex
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ZXCT1022E5TA, DiodesZetex
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MAX40056UAUA/V+, Maxim Integrated
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TSC199A2ICT, STMicroelectronics
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TSC1801BIYLT, STMicroelectronics
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MAX4377TASA+, Maxim Integrated
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NCS210RSQT2G, onsemi
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TSC201IYDT, STMicroelectronics
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TSC199A3IQT, STMicroelectronics
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TSC200, STMicroelectronics
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NCV7030DM2G014R2G, onsemi
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MAX9919FASA+, Maxim Integrated
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MAX4373FEUA+T, Maxim

MAX4373FEUA+T, Maxim

Integrated Current-Sensing Solution Simplifies High-Side Current Monitoring Current-Sense Amplifier plus Internal Comparator and Bandgap Reference with Improved Accuracy 1mV (max) Input Offset Voltage 2% (max) Full-Scale Accuracy Internal Bandgap Reference (±1.6% Accuracy) High Accuracy +2V to +28V Common-Mode Range, Functional Down to 0V Supply Voltage Ensures Current Monitoring Even In Deep Discharge of Battery Pack Low Power Consumption Extends Battery Life 50μA Supply Current Single +2.7V to +28V Operating Supply Latching Comparator Output Eliminates Oscillation Three Gain Versions (+20V/V, +50V/V, +100V/V) Support Different Size Battery Packs Applications Cell Phones General-System/Board-Level Current Monitoring Notebook Computers Portable Battery-Powered Systems Power-Management Systems Precision Current Sources Smart Battery Packs/Chargers
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MAX9922EUB+, Maxim

MAX9922EUB+, Maxim

Ultra-Precision VOS Over Temperature MAX9922: ±10μV (max) MAX9923T: ±25μV (max) MAX9923H: ±20μV (max) MAX9923F: ±10μV (max) ±0.5% (max) Full-Scale Gain Accuracy Bidirectional or Unidirectional ISENSE Multiple Gains Available Adjustable (MAX9922) +25V/V (MAX9923T) +100V/V (MAX9923H) +250V/V (MAX9923F) 1.9V to 28V Input Common-Mode Voltage VDD Supply Voltage: +2.85V to +5.5V 700μA Supply Current, 1μA Shutdown Current Extended Temperature Range (-40°C to +85°C) Available in Space-Saving 10-Pin μMAX Applications Handheld Li+ Battery Current Monitoring Notebook/Desktop Power Management Precision Current Sources
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MAX44284FAUT+T, Maxim

MAX44284FAUT+T, Maxim

36V PRECISION CURRENT-SENSE AMP Maxim Integrated’s MAX44284 is a high-side, current sense amplifier that operates with a 1.7V to 5.5V single supply and is optimized for very low power operation with only 21μA of quiescent current. Maxim offers a huge range of operational amplifiers or as some people know them op amps, current-sense amplifiers, and comparators for signal conditioning, monitoring, and control applications. The MAX44284 is offered in small 6-bump, 0.4mm-pitch WLP (1.3mm x 0.9mm) and 6-pin SOT23 packages and is specified for operation over the -40°C to +125°C automotive temperature range. Features and Benefits • Supports Use of Small Current-Sense Resistors to Improve Power-Supply Conversion Efficiency and Measurement Accuracy, • Extends Battery Life, • Four Fixed Gain Options Simplify Design, • Extremely Low 50nV/°C Input Offset Tempco Coefficient, • -0.1V to +36V Wide Input Common-Mode Range, • Low 0.05% Gain Error. Applications • Base-Stations • DC-DC Current Sensing in Power Management • Medical Pulse Oximeters and Infusion Pumps • Notebook Computers • Portable-/Battery-Powered Systems • Smartphones and Tablets
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MAX4373FEUA+, Maxim

MAX4373FEUA+, Maxim

Current Sensing Amplifiers, Maxim Integrated Current Sensing Amplifiers have a voltage output that is proportional to the volt drop across a very low value resistor, usually in a high-current power rail. Hence they measure the current flowing in that power rail.
New items
MAX44284FAUT+T, Maxim Integrated
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ZXCT1107SA-7, DiodesZetex

ZXCT1107SA-7, DiodesZetex

Current Sensing Amplifiers, DiodesZetex Current Sensing Amplifiers have a voltage output that is proportional to the volt drop across a very low value resistor, usually in a high-current power rail. Hence they measure the current flowing in that power rail.
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ZXCT1022E5TA, DiodesZetex

ZXCT1022E5TA, DiodesZetex

Current Sensing Amplifiers, DiodesZetex Current Sensing Amplifiers have a voltage output that is proportional to the volt drop across a very low value resistor, usually in a high-current power rail. Hence they measure the current flowing in that power rail.
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LTC6102IMS8#PBF, Linear Technology

LTC6102IMS8#PBF, Linear Technology

IC OPAMP CURR SENSE 200KHZ 8MSOP
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MAX4173HESA+, Maxim

MAX4173HESA+, Maxim

Current Sensing Amplifiers, Maxim Integrated Current Sensing Amplifiers have a voltage output that is proportional to the volt drop across a very low value resistor, usually in a high-current power rail. Hence they measure the current flowing in that power rail.
New items
LTC6102HMS8#PBF, Linear Technology

LTC6102HMS8#PBF, Linear Technology

Current Sensing Amplifiers, Linear Technology Linear Technology’s family of high-side current sense amplifiers allow current measurements to be made via an external resistor in the presence of high common mode voltages. Both voltage and current output types are available, together with both single and dual package versions. Current Sensing Amplifiers have a voltage output that is proportional to the volt drop across a very low value resistor, usually in a high-current power rail. Hence they measure the current flowing in that power rail.
New items
MAX4080FASA+, Maxim

MAX4080FASA+, Maxim

Current Sensing Amplifiers, Maxim Integrated Current Sensing Amplifiers have a voltage output that is proportional to the volt drop across a very low value resistor, usually in a high-current power rail. Hence they measure the current flowing in that power rail.
New items
MAX9611AUB+T, Maxim

MAX9611AUB+T, Maxim

0V to +60V Input Common-Mode Voltage Range 2.7V to 5.5V Power-Supply Range, Compatible with 1.8V and 3.3V Logic 5μA Software Shutdown Current Integrated 12-Bit ADC 13μV Current-Sense ADC Resolution 500μV (max) Current-Sense ADC Input Offset Voltage 0.5% (max) Current-Sense ADC Gain Error I²C Bus with 16 Addresses Small, 3mm x 5mm 10-Pin μMAX Package -40°C to +125°C Operating Temperature Range Applications Base-Station Feeder Cable Bias-T Base-Station PA Control Battery-Operated Equipment Hybrid Automotive Power Supplies Server Backplanes Telecom Cards
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