INA226 36V, 16-bit, ultra-precise i2c output current/voltage/power monitor w/alert | TI.com

INA226
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36V, 16-bit, ultra-precise i2c output current/voltage/power monitor w/alert

36V, 16-bit, ultra-precise i2c output current/voltage/power monitor w/alert - INA226
Datasheet
INA226 High-Side or Low-Side Measurement, Bi-Directional Current and Power Monitor with I2C Compatible Interface datasheet (Rev. A)
 

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

INA226 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 Resolution (Bits) Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
INA226 Order now 36     0     10     0.02     1     0.1     50     126     3.5     5.5     2.7     0.42     I2C
SMBus    		 Alert Function
Bi-directional
Low-side Capable    		 16     Catalog     -40 to 125     VSSOP | 10     10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)    
INA230 Order now 28     0     50     0.1     1     0.5     50     100     3.5     5.5     2.7     0.42     I2C
SMBus    		 Alert Function
Bi-directional
Low-side Capable    		 16     Catalog     -40 to 125     VQFN | 16     16VQFN: 9 mm2: 3 x 3 (VQFN | 16)    
INA233 Order now 36     0     10     0.02     1     0.1     25     126     3.5     5.5     2.7     0.4     I2C
PMBus
SMBus    		 Alert Function
Bi-directional
Integrated Power Accumulator
Low-side Capable    		 16     Catalog     -40 to 125     VSSOP | 10     10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)