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Showing Results For: Current Sensing Amplifiers

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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Maxim Integrated
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MAX4373FEUA+, Maxim Integrated
3003 In Stock
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£ 4.32
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£ 3.67
DiodesZetex
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ZXCT1022E5TA, DiodesZetex
6543 In Stock
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£ 0.42
DiodesZetex
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ZXCT1107SA-7, DiodesZetex
18 In Stock
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MAX4378FAUD+, Maxim Integrated
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£ 3.89
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NCS210RSQT2G, onsemi
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£ 0.23
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NCS199A2RSQT2G, onsemi
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£ 0.41
DiodesZetex
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ZXCT1084E5TA, DiodesZetex
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DiodesZetex
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ZXCT1110W5-7, DiodesZetex
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Renesas Electronics
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ISL28006FH20Z-T7A, Renesas Electronics
48 In Stock
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£ 2.43
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MAX9919FASA+, Maxim Integrated
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ZXCT1087E5TA, DiodesZetex
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ISL28006FH50Z-T7A, Renesas Electronics
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ZXCT1009FTA, DiodesZetex
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NCS211RMUTAG, onsemi
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ISL28022FRZ-T7A, Intersil
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£ 1.41
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NCS214RSQT2G, onsemi
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NCS199A3RSQT2G, onsemi
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ISL28005FH50Z-T7A, Renesas Electronics
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NCV214RSQT2G, onsemi
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ZXCT1109SA-7, DiodesZetex
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AD8210YRZ-REEL7, Analog Devices
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ZXCT1020E5TA, DiodesZetex
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ZXCT1082E5TA, DiodesZetex
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ISL28023FR12Z-T7A, Intersil
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MAX4172ESA+, Maxim Integrated
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New Items
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MAX9920ASA+, Maxim Integrated

MAX9920ASA+, Maxim Integrated

IC OPAMP CURR SENSE 230KHZ 8SOIC
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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
New items
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
New items
LTC4151IDD#PBF, Linear Technology

LTC4151IDD#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
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.
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Si8920AC-IP, Silicon Labs

Si8920AC-IP, Silicon Labs

Si8920 Isolated Amplifier for Current Shunt Measurement The Si8920 is a galvanically isolated analogue amplifier. Their low voltage and differential input is ideal for measuring voltage across a current shunt resistor or for any place where a sensor must be isolated from the control system. Output is a differential analogue signal amplified by either 8.1x or 16.2x. The very low signal delay allows control systems to respond quickly to fault conditions or changes in load. Low offset and gain drift ensure that accuracy is maintained over the entire operating temperature range. High common mode transient immunity means that the Si8920 will deliver accurate measurements even in the presence of high power switching like would be found in a motor drive system or inverter. To help evaluate the Si8920 there is a dedicated development kit available - SI8920ISO-KIT (RS 9026806). It is populated with the Si8920BC-IP and enables quick connection to a shunt resistor. The Si8920 is available in 4 variants: Si8920AC-IP (RS 901-3967 ) with an input range of ±100 mV in a Gull-Wing DIP-8 package Si8920BC-IP (RS 901-3976 ) with an input range of ±200 mV in a Gull-Wing DIP-8 package Si8920AD-IS (RS 901-3979 ) with an input range of ±100 mV in a SOIC-16 package Si8920BD-IS (RS 901-3973 ) with an input range of ±200 mV in a SOIC-16 package 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
MAX4173FESA+, Maxim

MAX4173FESA+, 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
MAX4080FASA+, Maxim Integrated

MAX4080FASA+, Maxim Integrated

IC OPAMP CURR SENSE 250KHZ 8SOIC
New items
ZXCT1030N8TA, DiodesZetex

ZXCT1030N8TA, 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.
New items
MAX9634FEUK+T, Maxim Integrated

MAX9634FEUK+T, Maxim Integrated

IC OPAMP CUR SENS 125KHZ SOT23-5
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