INA219 Current Sensor Module

Description

Product Details:

• CJMCU-219 is a module with the I2C interface of zero drift and bi-directional current/power monitoring and control integrated circuit (IC), further expand the TI energy-saving electronic products.INA219 has the industry’s highest precision and the small size, not only can monitor the pressure drop on the shunt resistor,
• sensing shunt power supply voltage, at the same time also can calculate the power. The device adopts the SOT23 packaging, but for the server, notebook computer, power supply, battery management and digital electric vehicle and telecommunication equipment measuring flu provide small, low cost solution.
• INA219-40 c to + 85 c temperature range and can realize the maximum error of 1% accuracy, maximum offset of 100 uV. The advantage of the high precision of the product in combination with 12 resolution, can help clients as much as possible, reduce the pressure drop on the shunt resistor, which can minimize the power loss and power consumption, and saving board space. The device epic of 26 bus voltage range of 0 V to + V.
• Calibration programmable registers can directly read its unit of measure is the ampere current, and power in watts per read. For as many as 128 sampling averaging, in order to realize filter in noise environment. The I2C interface has a timeout, not only can avoid the bus lock, but also can provide high-speed mode, meet the communication requirements.

The INA219 based Current sensor module is an I2C interface based high precision and bi-directional current/power monitoring module. The current sensor is an essential component of the power monitoring system. INA219 is capable of sensing power, voltage, and current with a 128 sample averaging and submitting the data to a host microcontroller using the I2C bus protocol.

INA219 current sensor has a powerful 12-bit ADC that converts the current sensed by a precision amplifier. The current sensing range is ±3.2A with a resolution of 0.8mA. This module can measure DC voltage up to +26V.

INA219 Board Overview

The board consists of the major following components described below:

• Integrated Circuit: The integrated circuit handles All signal and data processing.
• I2C Interface: The I2C bus comprises SDA and SCL and serves the purpose of transmitting data between the module and the microcontroller.
• Shunt resistor: It includes a shunt resistor of 2W 0.1 Ohms which can be replaced by the desired value.

Features

• It has in-built calibration registers to reduce uncertainty in the power, voltage, and current values.
• It contains 16 programmable addresses and filtering options.
• The sensor is available in 2 grades i.e. INA219A and INA219B.
• he Accuracy is up to 0.5% in INA219B over the temperature.
• The sensor has two package types i.e. SOT23-8 and SOIC-8.

Specifications

• Power Input: 3.0V-5.5V
• Up to +26V target voltage
• 0.1 ohm 1% 2W current sense resistor
• Up to ±3.2A current measurement, with ±0.8mA resolution
• Senses Bus Voltages from 0 to 26 V
• 2C- or SMBus-compatible interface
• Up to 128 samples can be averaged to achieve filtering in noisy environments.
• Board Dimension: 0.8 x 0.9 inch (l x w x h)

Pinout of INA219

See details on this link :

https://smartboatinnovations.com/ina219-voltage/

https://cdn.shopify.com/s/files/1/0672/9409/files/ina219-current-sensor-module.pdf?v=1632265198