INA219 26V, Bi-Directional, High-Side, I2C Out Current/Power Monitor | TI.com

INA219 (ACTIVE)

26V, Bi-Directional, High-Side, I2C Out Current/Power Monitor

 

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.

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

INA219 Error Analysis

0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
2.7 ≤ 
V ≤ 36
0 ≤ 
V ≤ 36
-40 ≤ 
C ≤ 125

Parametrics

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Part number Order Common mode voltage (Max) (V) Common mode voltage (Min) (V) Input offset (+/-) (Max) (uV) Input offset drift (+/-) (Typ) (uV/C) Gain (V/V) Gain error (%) Gain error drift (+/-) (Max) (ppm/°C) CMRR (Min) (dB) Bandwidth (kHz) Supply voltage (Max) (V) Supply voltage (Min) (V) Iq (Max) (mA) Digital interface Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
INA219 Order now 26     0     50
100    
0.1     1
0.5
0.25
0.125    
0.5
0.3    
83     120     5.5     5.5     3     1     I2C
SMBus    
Bi-directional
Programmable Gain    
Catalog     -40 to 125     SOIC | 8
SOT-23 | 8    
8SOIC: 19 mm2: 3.91 x 4.9 (SOIC | 8)
8SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 8)    
INA220 Order now 26     0     50
100    
0.16     1
0.5
0.25
0.125    
0.5
0.3    
83     120     5.5     5.5     3     1     I2C
SMBus    
Bi-directional
Low-side Capable
Programmable Gain    
Catalog     -40 to 125     VSSOP | 10     10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)    
INA220-Q1 Order now 26     0     50     0.16     1
0.5
0.25
0.125    
0.5     33     120     5.5     5.5     3     1     I2C
SMBus    
Bi-directional
Low-side Capable
Programmable Gain    
Automotive     -40 to 125     VSSOP | 10     10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)