INA219AIDCNT
Current/Power MonitorThe INA219AIDCNT is a current/power monitor from Texas Instruments. View the full INA219AIDCNT datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
Key Specifications
| Parameter | Value |
|---|---|
| Accuracy | ±1% |
| Output Current | 10mA |
| Function | Current Monitor |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 125°C |
| Package / Case | SOT-23-8 |
| Sensing Method | High-Side |
| Supplier Device Package | SOT-23-8 |
| Input Voltage Range | 0V ~ 26V |
Overview
Part: INA219 from Texas Instruments
Type: Zerø-Drift, Bidirectional Current/Power Monitor
Description: The INA219 is a current shunt and power monitor with an I2C or SMBUS-compatible interface, capable of sensing bus voltages from 0 to 26 V, reporting current, voltage, and power, and offering 0.5% maximum accuracy over temperature for the INA219B grade.
Operating Conditions:
- Supply voltage: 3–5.5 V
- Operating temperature: -40 to 125 °C
- Bus voltage range: 0 to 26 V
- SCL operating frequency: 0.001 to 2.56 MHz (High-Speed Mode)
Absolute Maximum Ratings:
- Max supply voltage: 6 V
- Max junction temperature: 150 °C
- Max storage temperature: 150 °C
Key Specs:
- Full-scale current sense (input) voltage range: 0 to ±320 mV (PGA = /8)
- Bus voltage (input voltage) range: 0 to 26 V
- Offset voltage, RTI (INA219B, PGA = /1): ±50 μV (max)
- Current measurement error (INA219B): ±0.3% (max)
- Bus voltage measurement error (INA219B): ±0.5% (max)
- ADC basic resolution: 12 bit
- Quiescent current: 0.7 mA (typ), 1 mA (max)
- Quiescent current, power-down mode: 6 μA (typ), 15 μA (max)
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
Applications:
- Servers
- Telecom Equipment
- Notebook Computers
- Power Management
- Battery Chargers
- Welding Equipment
- Power Supplies
- Test Equipment
Package:
- SOIC (8)
- SOT-23 (8)
Features
- 1 · 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
Applications
- Servers
- Telecom Equipment
- Notebook Computers
- Power Management
- Battery Chargers
- Welding Equipment
- Power Supplies
- Test Equipment
Pin Configuration
Electrical Characteristics
At TA = 25°C, VS = 3.3 V, VIN+ = 12V, VSHUNT = (VIN+ - VIN-) = 32 mV, PGA = /1, and BRNG (1) = 1, unless otherwise noted.
| PARAMETER | TEST CONDITIONS | INA219A | INA219A | INA219A | INA219B | INA219B | INA219B |
|---|---|---|---|---|---|---|---|
| MIN | TYP | MAX | MIN | TYP | MAX | ||
| PGA = /1 | 0 | ±40 | 0 | ±40 | |||
| Full-scale current sense (input) voltage | PGA = /2 | 0 | ±80 | 0 | ±80 | ||
| range | PGA = /4 | 0 | ±160 | 0 | ±160 | ||
| PGA = /8 | 0 | ±320 | 0 | ±320 | |||
| (2) | BRNG = 1 | 0 | 32 | 0 | 32 | ||
| Bus voltage (input voltage) range | BRNG = 0 | 0 | 16 | 0 | 16 | ||
| Common-mode rejection | V IN+ = 0 to 26 V | 100 | 120 | 100 | 120 | ||
| PGA = /1 | ±10 | ±100 | ±10 | ±50 (4) | |||
| Offset voltage, RTI (3) | PGA = /2 | ±20 | ±125 | ±20 | ±75 (4) | ||
| PGA = /4 | ±30 | ±150 | ±30 | ±75 (4) | |||
| PGA = /8 | ±40 | ±200 | ±40 | ±100 (4) | |||
| vs Temperature | T A = -25°C to 85°C | 0.1 | 0.1 | ||||
| vs Power Supply | V S = 3 to 5.5 V | 10 | 10 | ||||
| Current sense gain error | ±40 | ±40 | |||||
| vs Temperature | T A = -25°C to 85°C | 1 | 1 | ||||
| IN+ pin input bias current | Active mode | 20 | 20 | ||||
| IN- pin input bias current \ | \ | V IN- pin input impedance | Active mode | 20 | \ | \ | 320 |
| IN+ pin input leakage (5) | Power-down mode | 0.1 | ±0.5 | 0.1 | ±0.5 | ||
| IN- pin input leakage (5) | Power-down mode | 0.1 | ±0.5 | 0.1 | ±0.5 | ||
| ACCURACY | |||||||
| ADC basic resolution | 12 | 12 | |||||
| Shunt voltage, 1 LSB step size | 10 | 10 | |||||
| Bus voltage, 1 LSB step size | 4 | 4 | |||||
| Current measurement error | ±0.2% | ±0.5% | ±0.2% | ±0.3% ( 4) | |||
| over Temperature | T A = -25°C to 85°C | ±1% | ±0.5% ( 4) | ||||
| Bus voltage measurement error | ±0.2% | ±0.5% | ±0.2% | ±0.5% | |||
| over Temperature | T A = -25°C to 85°C | ±1% | ±1% | ||||
| Differential nonlinearity | ±0.1 | ±0.1 | |||||
| TIMING | |||||||
| 12 bit | 532 | 586 | 532 | 586 | |||
| 11 bit | 276 | 304 | 276 | 304 | |||
| ADC conversion time | 10 bit | 148 | 163 | 148 | 163 | ||
| 9 bit | 84 | 93 | 84 | 93 | |||
| Minimum convert input low time | 4 | 4 | |||||
| timeout (6) | 28 | 35 | 28 | 35 | |||
| INPUTS (SDA as Input, SCL, A0, A1) | |||||||
| Input capacitance | 3 | 3 | |||||
| Leakage input current | 0 ≤ V IN ≤ V S | 0.1 | 1 | 0.1 | 1 | ||
| V IH input logic level | 0.7 (V S ) | 6 0.7 | (V S ) | 6 | |||
| V IL input logic level | -0.3 | 0.3 (V S ) | -0.3 | 0.3 | (V S ) |
Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| V S | Supply voltage | 6 | V | |
| Analog Inputs IN+, IN- | Differential (V IN+ - V IN- ) (2) | -26 | 26 | V |
| Analog Inputs IN+, IN- | Common-mode(V IN+ + V IN- ) / 2 | -0.3 | 26 | V |
| SDA | SDA | GND - 0.3 | 6 | V |
| SCL | SCL | GND - 0.3 | V S + 0.3 | V |
| Input current into any pin | Input current into any pin | 5 | mA | |
| Open-drain digital output current | Open-drain digital output current | 10 | mA | |
| Operating temperature | Operating temperature | -40 | 125 | °C |
| T J | Junction temperature | 150 | °C | |
| T stg | Storage temperature | -65 | 150 | °C |
Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
| MIN | NOM | MAX | UNIT | |
|---|---|---|---|---|
| V CM | 12 | V | ||
| V S | 3.3 | V | ||
| T A | -25 | 85 | °C |
Thermal Information
| INA219 | INA219 | ||
|---|---|---|---|
| THERMAL METRIC (1) | D (SOIC) | DCN (SOT) | |
| 8 PINS | 8 PINS | ||
| R θ JA | Junction-to-ambient thermal resistance | 111.3 | 135.4 |
| R θ JC(top) | Junction-to-case (top) thermal resistance | 55.9 | 68.1 |
| R θ JB | Junction-to-board thermal resistance | 52 | 48.9 |
| ψ JT | Junction-to-top characterization parameter | 10.7 | 9.9 |
| ψ JB | Junction-to-board characterization parameter | 51.5 | 48.4 |
| R θ JC(bot) | Junction-to-case (bottom) thermal resistance | N/A | N/A |
Typical Application
The INA219 is a current shunt and power monitor with an I 2 C- and SMBus-compatible interface. The device monitors both a shunt voltage drop and bus supply voltage. Programmable calibration value, combined with an internal multiplier, enable readouts of current and power.
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| INA219 | Texas Instruments | — |
| INA219A | Texas Instruments | — |
| INA219AID | Texas Instruments | SOIC-8 |
| INA219AIDCNR | Texas Instruments | SOT-23-8 |
| INA219AIDR | Texas Instruments | 8-SOIC (0.154", 3.90mm Width) |
| INA219AIDR.A | Texas Instruments | — |
| INA219AIDR.B | Texas Instruments | — |
| INA219AIDRG4 | Texas Instruments | — |
| INA219B | Texas Instruments | — |
| INA219BID | Texas Instruments | SOIC-8 |
| INA219BIDCNR | Texas Instruments | SOT-23-8 |
| INA219BIDCNRG4 | Texas Instruments | — |
| INA219BIDCNT | Texas Instruments | SOT-23-8 |
| INA219BIDR | Texas Instruments | 8-SOIC (0.154", 3.90mm Width) |
| INA219BIDR.A | Texas Instruments | — |
| INA219BIDR.B | Texas Instruments | — |
Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.
Get structured datasheet data via API
Get started free