26V, 12-bit, i2c output current/voltage/power monitor
Product details
Parameters
Package | Pins | Size
Features
- Senses Bus Voltages from 0 to 26 V
- Reports Current, Voltage, and Power
- 16 Programmable Addresses
- High Accuracy: 0.5% (Maximum) Over
Temperature (INA219B) - Filtering Options
- Calibration Registers
- SOT23-8 and SOIC-8 Packages
Description
The INA219 is a current shunt and power monitor with an I2C- or SMBUS-compatible interface. The device monitors both shunt voltage drop and bus supply voltage, with programmable conversion times and filtering. A programmable calibration value, combined with an internal multiplier, enables direct readouts of current in amperes. An additional multiplying register calculates power in watts. The I2C- or SMBUS-compatible interface features 16 programmable addresses.
The INA219 is available in two grades: A and B. The B grade version has higher accuracy and higher precision specifications.
The INA219 senses across shunts on buses that can vary from 0 to 26 V. The device uses a single 3- to 5.5-V supply, drawing a maximum of 1 mA of supply current. The INA219 operates from 40°C to 125°C.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The INA219EVM key hardware consists of two boards, INA219 Test Board and USB DIG Platform. The INA219 Test Board contains the INA219, terminal strips for external connections, and several jumpers for device configuration. The USB DIG Platform contains an 8052 microcontroller with a built in USB (...)
Features
- INA219 Hardware Designer's Kit
- Evaluate INA219 + User's Current Shunt Design
- Full Temperature Evaluation
- Software Control for Designer's Kit
- Communicate with INA219 for Evaluation
- Calibrate INA219
Software development
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download TIDA-00818 BOM.pdf (92KB) -
download TIDA-00818 Assembly Drawing.pdf (159KB) -
download TIDA-00818 PCB.pdf (2091KB) -
download TIDA-00818 CAD Files.zip (1733KB) -
download TIDA-00818 Gerber.zip (764KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOIC (D) | 8 | View options |
SOT-23 (DCN) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
TI E2E™ forums with technical support from TI engineers
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