INA219 I2C Interface Bi-directional Current Monitoring Module

CJMCU-219
is a module with the I2C interface of zero drift and bi-directional
current/power monitoring and control integrated circuit (IC). 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.

This
breakout board will solve all your power-monitoring problems. Instead
of struggling with two multimeters, you can just use the handy INA219B
chip on this breakout to both measures both the high side voltage and DC
current draw over I2C with 1% precision.

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 a small low-cost
solution.

A precision
amplifier measures the voltage across the 0.1, 1% sense resistor. Since
the amplifier maximum input difference is 320mV this 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 (say a 0.01 ohm to measure up 32 Amps with a
resolution of 8mA)

INA219-40
c to + 85 c temperature range and can realize the maximum error of 1%
accuracy, a maximum offset of 100 V. 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.

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 between + 3.0 to + 5.5 V.

Specifications and 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 xCJMCU-219 INA219 Power Supply Monitoring Module

Specifications :-

Operating Voltage (VDC)	3 ~ 5.5
Accuracy	0.5%
Operating Temperature Range (C)	-40 to 85