Automotive, 36-V, Ultra-High Accuracy, Low-/High-Side, I2C Out Current/Power Monitor w/ Alert - INA226-Q1

INA226-Q1 (ACTIVE)

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

 

Description

The INA226-Q1 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-Q1 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°C and features up to 16 programmable addresses on the I2C-compatible interface.

For all available packages, see the orderable addendum at the end of the datasheet.

Features

  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C
    • Device HBM ESD Classification 2
    • Device CDM ESD Classification C4B
  • 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 Sense Power / Current Monitors

 
Common Mode Voltage (Max) (V)
Input Offset (+/-) (Max) (uV)
Input Offset Drift (+/-) (Typ) (uV/C)
Gain (V/V)
Gain Error (%)
CMRR (Min) (dB)
Bandwidth (kHz)
Supply Voltage (Max) (V)
Supply Voltage (Min) (V)
Iq (Max) (mA)
Features
Digital Interface
Rating
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Common Mode Voltage (Min) (V)
Gain Error Drift (Max) (ppm/°C)
PSRR (Typ) (uV/V)
Specified Common Mode Voltage (V)
Specified Power Supply Voltage (V)
INA226-Q1
36   
10   
0.02   
1   
0.1   
126   
3.5   
5.5   
2.7   
0.42   
Alert Function
Bi-directional
I2C
Low-side Capable   
I2C   
Automotive   
-40 to 125   
VSSOP   
10VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
0   
50   
2.5   
12   
3.3   

Other qualified versions of INA226-Q1

Version Part Number Definition
Catalog INA226 TI's standard catalog product

INA226-Q1 Error Analysis

0.001m ≤ 
 mOhm ≤ 100m
0.0001 ≤ 
A
A ≤ 100 
2.7 ≤ 
V ≤ 5.5
0 ≤ 
V ≤ 36
-40 ≤ 
C ≤ 125