ACS713ELCTR-30A-T Detailed explanation of pin function specifications and circuit principle instructions

The ACS713ELCTR-30A-T is a current sensor module produced by Allegro Microsystems, a well-known brand in the field of semiconductor sensors. The module is designed for measuring current with a sensitivity of 30A. Here's the requested detailed explanation regarding the pin functions, packaging, and usage.

Pin Function Specifications and Circuit Principle

Packaging Type and Pin Count

The ACS713ELCTR-30A-T is available in a SOIC-8 (Small Outline Integrated Circuit) package. This package contains 8 pins in total.

Below is the pin function description for the ACS713ELCTR-30A-T based on the 8-pin SOIC package:

Pin Number Pin Name Pin Function Description 1 VCC This pin is the Power supply for the device. The typical supply voltage is 5V (ranging from 3.3V to 5V). This pin powers the internal circuitry of the ACS713. 2 VSS This pin is the ground (GND) of the device. It should be connected to the ground of the system. 3 OUT The output pin that provides a voltage proportional to the measured current. The voltage varies based on the amount of current flowing through the sensor. 4 NC Not connected. This pin is reserved for future use and should be left unconnected. 5 ISNS The current sensing input pin. This pin connects to the load (via a shunt resistor or direct connection) where the current to be measured flows. The sensor detects the current. 6 NC Not connected. This pin is reserved for future use and should be left unconnected. 7 AOUT Analog output pin that gives a voltage proportional to the measured current. It is used for further processing or reading of the output voltage. 8 REF Reference pin used to establish a reference for the output voltage. It is typically connected to the same voltage source (VCC) as the VCC pin to achieve correct operation.

Detailed Pin Function Table

Pin Number Pin Name Pin Function Description 1 VCC Power supply input (typically 5V, range: 3.3V to 5V). 2 VSS Ground connection (0V). 3 OUT Output voltage signal (analog). 4 NC No connection (unused pin). 5 ISNS Current sensing input (measures current through the load). 6 NC No connection (unused pin). 7 AOUT Analog output (signal related to the measured current). 8 REF Reference input pin for voltage regulation (often tied to VCC).

Circuit Principle

The ACS713ELCTR-30A-T sensor works based on the Hall effect. When current flows through a conductor, it generates a magnetic field. The Hall sensor detects this magnetic field and generates a voltage proportional to the magnitude of the current. This voltage is then processed and output as an analog signal. The output voltage is a linear representation of the current passing through the conductor.

FAQ (Frequently Asked Questions)

What is the operating voltage of the ACS713ELCTR-30A-T? The operating voltage range of the ACS713ELCTR-30A-T is 3.3V to 5V. How does the ACS713ELCTR-30A-T measure current? The ACS713ELCTR-30A-T uses the Hall effect to detect the magnetic field produced by the current flowing through the conductor, providing a voltage proportional to the current. What is the output voltage range of the ACS713ELCTR-30A-T? The output voltage ranges from VSS (ground) to VCC, with the zero-current voltage typically being VCC/2. Can the ACS713ELCTR-30A-T measure both positive and negative currents? Yes, it can measure both positive and negative currents by providing corresponding voltage changes based on the direction of the current. What is the current sensing range of the ACS713ELCTR-30A-T? The sensor is designed to measure current up to ±30A. What is the accuracy of the ACS713ELCTR-30A-T? The accuracy of the ACS713ELCTR-30A-T is typically ±1.5% at full scale. How do I connect the ACS713ELCTR-30A-T to my circuit? Connect the VCC pin to the power supply, VSS to ground, ISNS to the current-carrying conductor, and the AOUT pin for the output signal. What is the output voltage when no current is flowing? When no current is flowing, the output voltage is typically VCC/2 (half of the supply voltage). Can the ACS713ELCTR-30A-T be used for both AC and DC current measurements? Yes, it can measure both AC and DC currents.

What is the typical output voltage sensitivity of the ACS713ELCTR-30A-T?

The typical sensitivity is around 185mV per Ampere (for a 5V supply).

What should be done with the NC pins?

The NC (Not Connected) pins should be left unconnected and not used in the circuit.

Can I use the ACS713ELCTR-30A-T for high-voltage applications?

The ACS713ELCTR-30A-T is designed for low-voltage applications, with a maximum operating voltage of 5V. It is not suitable for high-voltage applications.

How do I calibrate the ACS713ELCTR-30A-T sensor?

Calibration may be necessary if precise measurements are required. Typically, this involves adjusting the output voltage offset when no current is flowing.

Can I use the ACS713ELCTR-30A-T in a motor control circuit?

Yes, it can be used to measure the current in a motor control circuit, especially for monitoring current draw and load conditions.

Is there a need for additional circuitry to use the ACS713ELCTR-30A-T?

It is advisable to have some filtering and conditioning circuits for the analog output to improve stability and accuracy.

What is the power consumption of the ACS713ELCTR-30A-T?

The typical current consumption of the ACS713ELCTR-30A-T is very low, around 10mA at 5V.

What is the temperature range of the ACS713ELCTR-30A-T?

The operating temperature range of the ACS713ELCTR-30A-T is -40°C to +85°C.

Is the ACS713ELCTR-30A-T protected against overvoltage?

The ACS713ELCTR-30A-T has limited overvoltage protection, but it is important not to exceed the specified supply voltage (5V max).

Can the ACS713ELCTR-30A-T be used for power metering applications?

Yes, it is suitable for applications requiring current measurement, including power metering.

How can I interpret the output voltage of the ACS713ELCTR-30A-T?

The output voltage is VCC/2 at 0A. Positive current increases the output voltage, and negative current decreases it.

This detailed explanation covers the pin function, circuit principle, and FAQ for the ACS713ELCTR-30A-T sensor.