Product Details

This is the new CJMCU-219 INA219 I2C Interface No Drift Bi-directional Current/Power Supply Monitoring Module. It is available at the best price from the official reseller INDIA only at Robu. The module comes with everything you need to connect it.

CJMCU-219 is a module that integrates a zero drift and bi-directional current/power monitoring and control IC with an I2C interface. INA219 has the highest precision and the smallest size in the industry. It can monitor the voltage drop across the shunt resistor, sense the supply voltage of the shunt, and calculate the power.

This breakout board makes your power monitoring problems easy to solve. You don’t need to struggle with two multimeters. You can just use the convenient INA219 chip on this breakout to measure both the high side voltage and DC current draw over I2C with 1% precision.

The device uses the SOT23 package, which provides a small and low-cost solution for server, notebook computer, power supply, battery management, digital electric vehicle and telecommunication equipment measurement applications.

A precision amplifier measures the voltage across a 0.1, 1% sense resistor. The maximum input difference of the amplifier is ±320mV, which means it can measure up to ±3.2 Amps. With the internal 12-bit ADC, the resolution at ±3.2A range is 0.8mA. With the internal gain set at the minimum of div8, the max current is ±400mA and the resolution is 0.1mA. Advanced hackers can remove the 0.1-ohm current sense resistor and replace it with their own to change the range (for example, a 0.01 ohm to measure up to 32 Amps with a resolution of 8mA)

INA219 has a temperature range of -40°C to +85°C and can achieve a maximum accuracy error of 1% and a maximum offset of 100 μV. The high precision and 12-bit resolution of this product help clients reduce the voltage drop on the shunt resistor as much as possible.

Circuit Diagram Compatible with Arduino and Display :

INA219 other important features include:

1. Calibration programmable registers can directly read its unit of measure is the ampere current, and power in watts per reading.
2. For as many as 128 samplings averaging, in order to realize filter in the noise environment.
3. The I2C interface has a timeout, not only can avoid the bus lock, but also can provide high-speed mode, meet the communication requirements of up to 3.4 MHz.
4. All features are supported software programmable INA219.
5. Using a single power supply, the working voltage is between + 3.0 to + 5.5 V.

Features 

1. 0.1 ohm 1% 2W current sense resistor
2. Up to +26V target voltage
3. Up to ±3.2A current measurement, with ±0.8mA resolution
4. 0.9″ x 0.8″ PCB
5. PCB (no header or terminal block): 1.9g
6. Senses Bus Voltages from 0 to 26 V
7. 2C- or SMBus-compatible interface. The
8. Reports Current, Voltage, and Power
9. 16 Programmable Addresses
10. Filtering Options
11. Calibration Registers
12. SOT23-8 and SOIC-8 Packages

Package Includes 

• 1 x CJMCU-219 INA219 Power Supply Monitoring Module