INA219 CJMCU-219 Power Monitoring Sensor DC Voltage and Current Module

INA219 CJMCU-219 Power Monitoring Sensor

The INA219 CJMCU-219 Power Monitoring Sensor module that features a zero drift I2C interface and a bi-directional integrated circuit (IC) for current and power monitoring and control. This industry-leading IC, also known as the INA219, provides the highest level of precision while also being small in size. It is able to monitor the shunt resistor’s pressure drop and sense the shunt power supply voltage, as well as accurately calculate power.

INA219 CJMCU-219 Power Monitoring Sensor offers a solution to your power-monitoring needs. No more juggling multiple multimeters; the convenient INA219B chip on this breakout allows you to simultaneously measure high side voltage and DC current draw with 1% accuracy over I2C.

Utilizing the SOT23 packaging, INA219 CJMCU-219 Power Monitoring Sensor serves as a cost-effective solution for measuring flu in various applications such as servers, notebook computers, power supplies, battery management systems, digital electric vehicles, and telecommunication equipment.

Using a precision amplifier, the voltage is measured across a 0.1, 1% sense resistor. This allows for measurement of up to ±3.2 Amps, within the maximum input difference of ±320mV. The internal 12 bit ADC provides a resolution of 0.8mA at this range. For smaller current measurements, the internal gain can be set to div8, resulting in a maximum current of ±400mA and a resolution of 0.1mA. For those with advanced hacking skills, it is possible to replace the 0.1-ohm current sense resistor with their own, allowing for a wider range (for example, measuring up to 32 Amps with a resolution of 8mA) using a 0.01 ohm resistor.

With a temperature range of -40 c to 85 c, the INA219 offers high accuracy of 1% and a maximum offset of 100 μV. Its precision, along with 12 resolution, allows clients to minimize power loss and consumption by reducing pressure on the shunt resistor and saving board space. The device has an operating voltage range of 0 V to V.

Other notable characteristics of the INA219 CJMCU-219 Power Monitoring Sensor include:

• The programmable registers for calibration have the ability to directly measure the current in amperes and power in watts for each reading.
• To achieve a noise-filtering effect, 128 samples are needed to be taken on average.
• The I2C interface is equipped with a timeout feature, which not only prevents bus lock but also supports high-speed mode for communication at speeds of up to 3.4 MHz.
• The INA219 is a software programmable tool that supports all of its features.
• The operating voltage ranges from 3.0 to 5.5 V and can be powered by a single supply.

The specifications and features of the INA219 CJMCU-219 Power Monitoring Sensor include…

• A 2-watt current sense resistor with a tolerance of 1% and a resistance of 0.1 ohms.
• The target voltage can reach a maximum of 26V.
• Efficiently measure currents with a range of ±3.2A and a high resolution of ±0.8mA.
• The dimensions of the PCB are 0.9″ x 0.8″.
• The printed circuit board (without a header or terminal block) weighs 1.9g.
• Detects bus voltages ranging from 0 to 26 V.
• 2C- or SMBus-compatible communication protocol.
• Provides data on Current, Voltage, and Power.
• There are a total of 16 addresses that can be programmed.
• There are various ways to filter your options.
• The registers used for calibration purposes
• Both the SOT23-8 and SOIC-8 packages are commonly used in electronic devices.