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Product details

Parameters

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 Resolution (Bits) 16 Rating Catalog Operating temperature range (C) -40 to 125 open-in-new Find other Current/voltage/power monitors

Package | Pins | Size

VSSOP (DGS) 10 9 mm² 3 x 3 open-in-new Find other Current/voltage/power monitors

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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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.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet INA233 High-Side or Low-Side Measurement, Bidirectional Current and Power Monitor With I2C-, SMBus-, and PMBus-Compatible Interface datasheet Apr. 26, 2016
Application notes USB Type C™ Monitor Power Budge Control With INA233 Power Sensing Jun. 09, 2020
White papers Simplifying Current Sensing (Rev. A) Jan. 09, 2020
Application notes Current Sensing Applications in Communication Infrastructure Equipment Sep. 19, 2019
Technical articles A key to accurate system thermal management: monitoring both current flow and temperature Oct. 04, 2018
Application notes Measuring Current to Handle Multiple Out-of-Range Conditions (Rev. B) May 18, 2018
Selection guides Current Sense Amplifiers (Rev. D) Apr. 04, 2018
Application notes Digital Interfaces for Current Sensing Devices Jun. 30, 2017
Technical articles System trade-offs for high- and low-side current measurements Jun. 01, 2017
Application notes Energy and Power Monitoring with Digital Current Sensors May 25, 2017
User guides INA233EVM User's Guide Apr. 24, 2017
Application notes Integrated, Current Sensing Analog-to-Digital Converter Dec. 21, 2016
Application notes Integrating The Current Sensing Signal Path (Rev. A) Dec. 02, 2016
Technical articles Why should you care about overcurrent protection in your system? Jun. 16, 2016
Application notes Understanding the I2C Bus Jun. 30, 2015
Technical articles How to get started with current sense amplifiers – part 2 May 26, 2015

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
49
Description
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 (...)
Features
  • Small form factor
  • USB powered
  • Digital host controller and GUI included
GUIS FOR EVALUATION MODULES (EVM) Download
SBOC482.ZIP (5472 KB)

Design tools & simulation

SIMULATION MODELS Download
SBOMAD9.ZIP (55 KB) - IBIS Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SIMULATION TOOLS Download
SPICE-based analog simulation program
TINA-TI 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 (...)
document-generic User guide

CAD/CAE symbols

Package Pins Download
VSSOP (DGS) 10 View options

Ordering & quality

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