Product details

Common mode voltage (Max) (V) 36 Common mode voltage (Min) (V) 0 Input offset (+/-) (Max) (uV) 10 Input offset drift (+/-) (Typ) (uV/C) 0.02 Gain (V/V) 1 Gain error (%) 0.1 Gain error drift (+/-) (Max) (ppm/°C) 25 CMRR (Min) (dB) 126 Bandwidth (kHz) 3.5 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 0.4 Digital interface I2C, PMBus, SMBus Features Alert Function, Bi-directional, Integrated Power Accumulator, Low-side Capable, Ultra precise Resolution (Bits) 16 Rating Catalog Operating temperature range (C) -40 to 125
Common mode voltage (Max) (V) 36 Common mode voltage (Min) (V) 0 Input offset (+/-) (Max) (uV) 10 Input offset drift (+/-) (Typ) (uV/C) 0.02 Gain (V/V) 1 Gain error (%) 0.1 Gain error drift (+/-) (Max) (ppm/°C) 25 CMRR (Min) (dB) 126 Bandwidth (kHz) 3.5 Supply voltage (Max) (V) 5.5 Supply voltage (Min) (V) 2.7 Iq (Max) (mA) 0.4 Digital interface I2C, PMBus, SMBus Features Alert Function, Bi-directional, Integrated Power Accumulator, Low-side Capable, Ultra precise Resolution (Bits) 16 Rating Catalog Operating temperature range (C) -40 to 125
VSSOP (DGS) 10 9 mm² 3 x 3
  • 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
  • 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

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.

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.

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Technical documentation

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Type Title Date
* Data sheet INA233 High-Side or Low-Side Measurement, Bidirectional Current and Power Monitor With I2C-, SMBus-, and PMBus-Compatible Interface datasheet 26 Apr 2016
Application note Measuring Current for Handle Multiple Out-of-Range Conditions (Rev. C) 04 Oct 2021
Application note Digital Interfaces for Current Sensing Devices (Rev. A) 30 Sep 2021
Application note Integrating the Current Sensing Signal Path (Rev. B) 29 Sep 2021
Application note Integrated, Current Sensing Analog-to-Digital Converter (Rev. A) 28 Sep 2021
Selection guide Current Sense Amplifiers (Rev. E) 20 Sep 2021
Application note Getting Started with Digital Power Monitors (Rev. A) 02 Sep 2021
Technical article Solving the multidecade current-measurement challenge in your 48-V BMS application 14 Jun 2021
Application note Synchronized Measurements with Digital Current Sense Monitors 23 Mar 2021
Technical article How current-sense amplifiers monitor satellite health 08 Feb 2021
Application note Current Sensing Applications in Communication Infrastructure Equipment (Rev. A) 29 Dec 2020
Application note USB Type C™ Monitor Power Budge Control With INA233 Power Sensing 09 Jun 2020
E-book Simplifying Current Sensing (Rev. A) 09 Jan 2020
Technical article A key to accurate system thermal management: monitoring both current flow and temperature 04 Oct 2018
Technical article System trade-offs for high- and low-side current measurements 01 Jun 2017
Application note Energy and Power Monitoring with Digital Current Sensors 25 May 2017
User guide INA233EVM User's Guide 24 Apr 2017
Application note Understanding the I2C Bus 30 Jun 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

INA233EVM — INA233 Current Shunt Monitor Evaluation Module

The INA233 is a current shunt and power monitor with an I2C/SMBus/PMBus-compatible interface. The device monitors both a shunt voltage drop and bus supply voltage. 

The INA233EVM is a compact, easy-to-use platform for evaluating the main features and performance of the INA233 Current Shunt Monitor (...)
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GUI for evaluation module (EVM)

INA233EVM

SBOC482.ZIP (5472 KB)
Simulation model

INA233 IBIS Model

SBOMAD9.ZIP (55 KB) - IBIS Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Calculation tool

INA233 Overflow Calculator

SBOR019.ZIP (28 KB)
Calculation tool

Power Monitor Tool

SBOR021.ZIP (266 KB)
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VSSOP (DGS) 10 View options

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