Part Number: ACS723LLCTR-20AU-T

Manufacturer: Allegro MicroSystems


Shipped from: Shenzhen/HK Warehouse

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Technical Specifications of ACS723LLCTR-20AU-T

Datasheet  ACS723LLCTR-20AU-T datasheet
Category Sensors, Transducers
Family Current Transducers
Manufacturer Allegro MicroSystems, LLC
Packaging Cut Tape (CT)
Part Status Active
For Measuring DC
Sensor Type Hall Effect, Open Loop
Current – Sensing 20A
Number of Channels 1
Output Ratiometric, Voltage
Sensitivity 200mv/A
Frequency DC ~ 80kHz
Linearity ±1%
Accuracy ±3%
Voltage – Supply 5V
Response Time 5μs
Current – Supply (Max) 14mA
Operating Temperature -40°C ~ 150°C
Polarization Unidirectional
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154″, 3.90mm Width)

ACS723LLCTR-20AU-T Introduction

The ACS723LLCTR-20AU-T is a high-performance current sensor made so that electronic devices can accurately measure current. Because it has great features and works well, it is a great choice for many uses where accurate current measurement is needed.

ACS723LLCTR-20AU-T Description

The AllegroTM ACS723 current sensor IC is a cheap and efficient way to measure AC or DC current in a wide range of industrial, commercial, and communications systems. Its small size makes it perfect for applications with limited room. It also saves money by reducing the amount of board space needed.

This device can be used to handle motors, find and manage loads, manage switched-mode power supplies, and protect against overcurrent faults, among other things.

The ACS723 has an exact linear Hall sensor circuit with a low offset and a copper conduction path near the surface of the die. As current runs through this copper path, a magnetic field is created. The integrated Hall IC picks up on this magnetic field and turns it into a voltage that is proportional to the magnetic field. The Hall sensor is accurate because the magnetic field is close to it.

The ACS723 uses Allegro’s unique digital temperature compensation to make sure it works well even when the temperature changes. This makes the output voltage of the chopper-stabilized, low-offset BiCMOS Hall IC more accurate.

The output of the device has a positive slope when the current via the current-detecting channel (the primary copper conduction line, from pins 1 and 2 to pins 3 and 4) increases. Typically, this conductivity line has an internal resistance of 0.65 m, which translates to a negligible amount of power loss.

One thing that makes the ACS723 stand out is that the ends of the conductive path are not connected to the sensor leads (pins 5 through 8). This means that the ACS723 can be used in high-side current sensing applications without the need for expensive high-side differential amplifiers or separation methods.

Key Specifications

  • Maximum Current: The ACS723LLCTR-20AU-T can handle up to 20 A of current, so it can be used for a wide range of current-detecting needs.
  • Channels: This current sensor has only one channel, so it can only measure current flowing in one direction.
  • Type of Package: The ACS723LLCTR-20AU-T comes in an 8-SOIC (0.154″, 3.90mm width) package, which is small and easy to use in circuit designs.

The ACS723LLCTR-20AU-T current sensor is a reliable way to measure current precisely in a variety of electronic systems because it can measure current correctly and is small.

Principle of Operation

The Hall Effect is used by the ACS723LLCTR-20AU-T current sensor to find and record electrical currents. The hall effect is an event that happens when a conductor is put in a magnetic field that is perpendicular to the direction of current flow. This creates a voltage across the conductor. This technology is used in the ACS723LLCTR-20AU-T current sensor to correctly sense and measure currents.

A conductor is what makes up the sensor. The current to be measured runs through the conductor. When current flows through this circuit, a magnetic field is created around it. The ACS723LLCTR-20AU-T has an open-loop unidirectional configuration, which means it can only measure current going one way.

A Hall effect detector that responds to magnetic fields is inside the sensor. When the current-carrying conductor’s magnetic field reacts with the Hall transducer, it produces a voltage that is proportional to the current. The voltage is then amplified and changed so that a true picture of the current being recorded can be made.

The ACS723LLCTR-20AU-T current gauge can measure current accurately because it can pick up the magnetic field and turn it into an electrical signal. The open-loop unidirectional configuration makes sure that the sensor can correctly measure current flow in a single direction, allowing for reliable monitoring and control in situations where unidirectional current sensing is needed.

Overall, the ACS723LLCTR-20AU-T current sensor’s Hall Effect technology and open-loop unidirectional configuration make it easy to identify and measure electrical currents. It can do this in a variety of applications where accurate and reliable current monitoring is needed.

Features and Benefits

The ACS723LLCTR-20AU-T current gauge has a number of features and benefits that make it a good choice for measuring current accurately. Here are some important features and the perks that come with them:

  • Maximum Current Rating: With a maximum current rating of 20A, the ACS723LLCTR-20AU-T can handle a lot of current, making it perfect for a wide range of applications that need precise current monitoring.
  • Single-Channel Configuration: The sensor has a single-channel configuration, which means it can only measure current going one way. This feature is especially helpful in applications where current sensing in only one direction is needed. It makes it possible to accurately monitor and control the flow of current.
  • Miniature SOIC Package: The ACS723LLCTR-20AU-T comes in a package called an 8-SOIC (0.154″, 3.90mm width). This small size makes it easy to add to circuit designs, saving important board space and allowing for flexible placement in applications with limited space.
  • Accurate Current Measures: Because it uses Hall Effect technology, the ACS723LLCTR-20AU-T is able to make very accurate current measurements. By detecting and converting the magnetic fields created by the flow of current, the sensor gives accurate and reliable current readings. This makes sure that electrical currents can be accurately monitored and controlled.
  • Unidirectional Sensing: Because the ACS723LLCTR-20AU-T is set up with an open-loop unidirectional configuration, it can only measure current flow in one direction. This feature is helpful in situations where it’s important to watch the flow of current in a certain way. It gives accurate measurements and makes it easier to control the system.

By using these features, the ACS723LLCTR-20AU-T current sensor can do a lot of things well, such as handle high currents, measure currents accurately, fit into small spaces, and do solid one-way current sensing. Because of these benefits, it is a great choice for motor control, power management, battery chargers, and other systems that need to measure and control current accurately.


The ACS723LLCTR-20AU-T does a great job of accurately and reliably measuring power. It sticks out from other products because it has great features like a maximum current rating of 20A, a single-channel setup, and a small SOIC package. It uses Hall Effect technology and an open-loop unidirectional design to measure current accurately in specific directions. This makes it perfect for motor control, power management, and battery chargers.

When the ACS723LLCTR-20AU-T is used in electronic designs, speed and efficiency are optimized. Our team at ICRFQ is ready to help you with your planning process from start to finish. Find out how the ACS723LLCTR-20AU-T current sensor can change things and use accurate and reliable current readings to improve your projects.

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Kevin Chen