SBOS790 April 2017 INA233

PRODUCTION DATA. 

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  6. Specifications
    1. 6.1Absolute Maximum Ratings
    2. 6.2ESD Ratings
    3. 6.3Recommended Operating Conditions
    4. 6.4Thermal Information
    5. 6.5Electrical Characteristics
    6. 6.6Typical Characteristics
  7. Detailed Description
    1. 7.1Overview
    2. 7.2Functional Block Diagram
    3. 7.3Feature Description
      1. 7.3.1High-Accuracy Analog-to-Digital Convertor (ADC)
      2. 7.3.2Interleaved Power Calculation
      3. 7.3.3Power Accumulator and Energy Measurement
      4. 7.3.4I2C-, SMBus-, and PMBus-Compatible Digital Interface
      5. 7.3.5Multiple Fault Event Reporting
    4. 7.4Device Functional Modes
      1. 7.4.1Continuous verses Triggered Operation
      2. 7.4.2Device Shutdown
      3. 7.4.3Averaging and Conversion Time Considerations
      4. 7.4.4Filtering and Input Considerations
    5. 7.5Programming
      1. 7.5.1Default Settings
      2. 7.5.2Calibration Register and Scaling
      3. 7.5.3Reading and Writing Telemetry Data and Warning Thresholds
      4. 7.5.4Reading Telemetry Data and Warning Thresholds
        1. 7.5.4.1Writing Telemetry Data and Warning Thresholds
      5. 7.5.5System-Level Calibration With MFR_CALIRATION Command
      6. 7.5.6Bus Overview
        1. 7.5.6.1Serial Bus Address
        2. 7.5.6.2Serial Interface
        3. 7.5.6.3Writing to and Reading From the INA233
          1. 7.5.6.3.1Packet Error Checking
          2. 7.5.6.3.2Bus Timing Requirements
        4. 7.5.6.4SMBus Alert Response
    6. 7.6Register Maps
      1. 7.6.1PMBus Command Support
      2. 7.6.2Standard PMBus Commands
        1. 7.6.2.1 CLEAR_FAULTS (03h)
        2. 7.6.2.2 RESTORE_DEFAULT_ALL (12h)
        3. 7.6.2.3 CAPABILITY (19h)
        4. 7.6.2.4 IOUT_OC_WARN_LIMIT (4Ah) [default = 01111111 11111000]
        5. 7.6.2.5 VIN_OV_WARN_LIMIT (57h) [default = 01111111 11111000]
        6. 7.6.2.6 VIN_UV_WARN_LIMIT (58h) [default = 00000000 00000000]
        7. 7.6.2.7 PIN_OP_WARN_LIMIT (6Bh) [default = 11111111 11110000]
        8. 7.6.2.8 STATUS_BYTE (78h)
        9. 7.6.2.9 STATUS_WORD (79h)
        10. 7.6.2.10STATUS_IOUT (7Bh)
        11. 7.6.2.11STATUS_INPUT (7Ch)
        12. 7.6.2.12STATUS_CML (7Eh)
        13. 7.6.2.13STATUS_MFR_SPECIFIC (80h)
        14. 7.6.2.14READ_EIN (86h)
        15. 7.6.2.15READ_VIN (88h)
        16. 7.6.2.16READ_IIN (89h)
        17. 7.6.2.17READ_VOUT (8Bh)
        18. 7.6.2.18READ_IOUT (8Ch, R)
        19. 7.6.2.19READ_POUT (96h, R)
        20. 7.6.2.20READ_PIN (97h, R)
        21. 7.6.2.21MFR_ID (99h)
        22. 7.6.2.22MFR_MODEL (9Ah)
        23. 7.6.2.23MFR_REVISION (9Bh)
      3. 7.6.3Manufacturer-Specific PMBus Commands
        1. 7.6.3.1MFR_ADC_CONFIG (D0h) [default = 01000001 00100111]
        2. 7.6.3.2MFR_READ_VSHUNT (D1h) [default = 00000000 00000000]
        3. 7.6.3.3MFR_ALERT_MASK (D2h) [default = XXXXXXXX 11110000]
        4. 7.6.3.4MFR_CALIBRATION (D4h) [default = 00000000 00000001]
        5. 7.6.3.5 MFR_DEVICE_CONFIG (D5h) [default = 00000010]
        6. 7.6.3.65.1.1 CLEAR_EIN (D6h)
        7. 7.6.3.7TI_MFR_ID (E0h) [value = 01010100 01001001]
        8. 7.6.3.8TI_MFR_MODEL (E1h) [value = 00110011 00110011]
        9. 7.6.3.9TI_MFR_REVISION (E2h) [value = 01000001 00110000]
  8. Application and Implementation
    1. 8.1Application Information
    2. 8.2Typical Application
      1. 8.2.1Design Requirements
      2. 8.2.2Detailed Design Procedure
        1. 8.2.2.1Programming the Calibration Register
        2. 8.2.2.2Calculating PMBus Coefficients
        3. 8.2.2.3Programming Warning Thresholds
        4. 8.2.2.4Calculating Returned Telemetry Values
      3. 8.2.3Application Curves
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1Layout Guidelines
    2. 10.2Layout Example
  11. 11Device and Documentation Support
    1. 11.1Device Support
      1. 11.1.1Development Support
    2. 11.2Documentation Support
      1. 11.2.1Related Documentation
    3. 11.3Receiving Notification of Documentation Updates
    4. 11.4Community Resources
    5. 11.5Trademarks
    6. 11.6Electrostatic Discharge Caution
    7. 11.7Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Mechanical Data (Package|Pins)
Orderable Information

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

Applications

  • Servers
  • Telecom Infrastructure
  • High-Performance Computing
  • Power Metering
  • Battery Chargers
  • Power Supply
  • Test Equipment

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.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)
INA233VSSOP (10)3.00 mm x 3.00 mm
  1. For all available packages, see the orderable addendum at the end of the datasheet.

High-Side or Low-Side Sensing Application

INA233 p1_fbd_sbos790.gif