High Accuracy Current, Voltage, Power and Energy Monitor With 1.8V I2C/PMBus - INA233

INA233 (ACTIVE)

High Accuracy Current, Voltage, Power and Energy Monitor With 1.8V I2C/PMBus

 

Description

The INA233 device is a current, voltage, and power monitor with an I2C-, SMBus-, and PMBus-compatible interface that is compliant with digital bus voltages from 1.8 V to 5.0 V. The device monitors and reports values for current, voltage, and power. The integrated power accumulator can be used for energy or average power calculations. Programmable calibration value, conversion times, and averaging when combined with an internal multiplier enable direct readouts of current in amperes and power in watts.

The INA233 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 supply current of 310 µA in normal operation. The device can be placed in a low-power standby mode where the typical operating current is only 2 µA. The device is specified over the operating temperature range between –40°C and +125°C and features up to 16 programmable addresses.

Features

  • Senses Bus Voltages From 0 V to 36 V
  • High-Side or Low-Side Sensing
  • Reports Current, Voltage, and Power
  • Integrated Power Accumulator for Energy and Average Power Monitoring
  • High Accuracy:
    • 0.1% Gain Error (Max)
    • 10-µV Offset (Max)
  • Configurable Averaging Options
  • Independent Alert Limits for Current, Bus Voltage, and Power
  • 1.8-V Compliant I2C, SMBus, PMBus Interface
  • 16 Programmable Addresses
  • Operates From a 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)
INA233 INA226
36    36   
10    10   
0.02    0.02   
1    1   
0.1    0.1   
126    126   
3.5    3.5   
5.5    5.5   
2.7    2.7   
0.4    0.42   
Alert Function
I2C
Integrated Power Monitor
Low-side Capable
PMBus   
Alert Function
Bi-directional
I2C
Low-side Capable   
I2C
PMBus
SMBus   
I2C   
Catalog    Catalog   
-40 to 125    -40 to 125   
VSSOP    VSSOP   
10VSSOP: 15 mm2: 4.9 x 3(VSSOP)    10VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
0    0   
25    50   
1    2.5   
12    12   
3.3    3.3   

Featured tools and software

INA233 Error Analysis

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