INA226 36V, Bi-Directional, High Accuracy, Low-/High-Side, I2C Out Current/Power Monitor w/Alert | TI.com

INA226 (ACTIVE)

36V, Bi-Directional, High Accuracy, Low-/High-Side, I2C Out Current/Power Monitor w/Alert

36V, Bi-Directional, High Accuracy, Low-/High-Side, I2C Out Current/Power Monitor w/Alert - INA226
 

Description

The INA226 is a current shunt and power monitor with an I2C™- or SMBUS-compatible interface. The device monitors both a shunt voltage drop and bus supply voltage. Programmable calibration value, conversion times, and averaging, combined with an internal multiplier, enable direct readouts of current in amperes and power in watts.

The INA226 senses current on common-mode bus voltages that can vary from 0 V to 36 V, independent of the supply voltage. The device operates from a single 2.7-V to 5.5-V supply, drawing a typical of 330 µA of supply current. The device is specified over the operating temperature range between –40°C and 125\xC2°C and features up to 16 programmable addresses on the I2C-compatible interface.

Features

  • Senses Bus Voltages From 0 V to 36 V
  • High-Side or Low-Side Sensing
  • Reports Current, Voltage, and Power
  • High Accuracy:
    • 0.1% Gain Error (Max)
    • 10 µV Offset (Max)
  • Configurable Averaging Options
  • 16 Programmable Addresses
  • Operates from 2.7-V to 5.5-V Power Supply
  • 10-Pin, DGS (VSSOP) Package

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Parametrics Compare all products in Current / voltage / power monitors

 
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)
INA226 INA230 INA233
36     28     36    
0     0     0    
10     50     10    
0.02     0.1     0.02    
1     1     1    
0.1     0.5     0.1    
50     50     25    
126     100     126    
3.5     3.5     3.5    
5.5     5.5     5.5    
2.7     2.7     2.7    
0.42     0.42     0.4    
I2C
SMBus    
I2C
SMBus    
I2C
PMBus
SMBus    
Alert Function
Bi-directional
Low-side Capable    
Alert Function
Bi-directional
Low-side Capable    
Alert Function
Bi-directional
Integrated Power Accumulator
Low-side Capable    
Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125    
VSSOP | 10     VQFN | 16     VSSOP | 10    
10VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 10)     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)     10VSSOP: 15 mm2: 4.9 x 3 (VSSOP | 10)    

INA226 Error Analysis

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