SBOSAL5 June   2025 INA2227

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements (I2C)
    7. 5.7 Timing Diagram
    8. 5.8 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Integrated Analog-to-Digital Converter (ADC)
      2. 6.3.2 Internal Measurement and Calculation Engine
      3. 6.3.3 Low Bias Current
      4. 6.3.4 Low Voltage Supply and Wide Common-Mode Voltage Range
      5. 6.3.5 ALERT Pin
    4. 6.4 Device Functional Modes
      1. 6.4.1 Continuous Versus Triggered Operation
      2. 6.4.2 Device Low Power Modes
      3. 6.4.3 Power-On Reset
      4. 6.4.4 Averaging and Conversion Time Considerations
    5. 6.5 Programming
      1. 6.5.1 I2C Serial Interface
      2. 6.5.2 Writing to and Reading Through the I2C Serial Interface
      3. 6.5.3 High-Speed I2C Mode
      4. 6.5.4 General Call Reset
      5. 6.5.5 SMBus Alert Response
  8. 7 Register Maps
    1. 7.1 Device Registers
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Device Measurement Range and Resolution
      2. 8.1.2 Current and Power Calculations
      3. 8.1.3 ADC Output Data Rate and Noise Performance
      4. 8.1.4 Filtering and Input Considerations
      5. 8.1.5 eFuse Current and Power Monitoring
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Select the Shunt Resistor
        2. 8.2.2.2 Configure the Device
        3. 8.2.2.3 Program the Shunt Calibration Registers
        4. 8.2.2.4 Set Desired Fault Thresholds
        5. 8.2.2.5 Calculate Returned Values
      3. 8.2.3 Application Curves
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Device Support
      1. 9.1.1 Development Support
    2. 9.2 Documentation Support
      1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • YBJ|16
Thermal pad, mechanical data (Package|Pins)
Orderable Information

8.1.3 ADC Output Data Rate and Noise Performance

The INA2227 noise performance and effective resolution depend on the ADC conversion time. The device also supports digital averaging which can further help decrease digital noise. The flexibility of the device to select ADC conversion time and data averaging offers increased signal-to-noise ratio and achieves the highest dynamic range with lowest offset. The profile of the noise at lower signals levels is dominated by the system noise that is comprised mainly of 1/f noise or white noise. The effective resolution of the ADC can be increased by increasing the conversion time and increasing the number of averages.

Table 8-2 summarizes the output data rate conversion settings supported by the device. The fastest conversion setting is 140µs. Typical noise-free resolution is represented as Effective Number of Bits (ENOB) based on device measured data. The ENOB is calculated based on noise peak-to-peak values, which verifies that full noise distribution is taken into consideration.

Table 8-2 INA2227 Noise performance, current measurement, single channel enabled
ADC CONVERSION TIME PERIOD [µs]OUTPUT SAMPLE AVERAGING [SAMPLES]OUTPUT SAMPLE PERIOD [ms]NOISE-FREE ENOB (±81.92mV) (ADCRANGE = 0)NOISE-FREE ENOB (±20.48mV) (ADCRANGE = 1)
14010.1413.111.1
20410.20413.411.1
33210.33214.111.7
58810.58814.712.2
110011.114.712.5
211612.11615.113.4
415614.15615.714.1
824418.24416.014.7
14040.5614.112.1
20440.81614.412.4
33241.32815.112.9
58842.35215.713.4
110044.415.713.7
211648.46416.014.7
4156416.62416.014.7
8244432.97616.015.7
140162.2415.113.1
204163.26415.713.4
332165.31215.714.1
588169.40816.014.4
11001617.616.015.1
21161633.85616.015.7
41561666.49616.015.7
824416131.90416.016.0
140648.9615.713.7
2046413.05616.014.4
3326421.24816.015.1
5886437.63216.015.7
11006470.416.015.7
211664135.42416.016.0
415664265.98416.016.0
824464527.61616.016.0
14012817.9216.014.1
20412826.11216.015.1
33212842.49616.015.7
58812875.26416.015.7
1100128140.816.016.0
2116128270.84816.016.0
4156128531.96816.016.0
82441281055.23216.016.0
14025635.8416.014.7
20425652.22416.015.7
33225684.99216.015.7
588256150.52816.016.0
1100256281.616.016.0
2116256541.69616.016.0
41562561063.93616.016.0
82442562110.46416.016.0
14051271.6816.015.1
204512104.44816.015.7
332512169.98416.016.0
588512301.05616.016.0
1100512563.216.016.0
21165121083.39216.016.0
41565122127.87216.016.0
82445124220.92816.016.0
1401024143.3616.015.7
2041024208.89616.016.0
3321024339.96816.016.0
5881024602.11216.016.0
110010241126.416.016.0
211610242166.78416.016.0
415610244255.74416.016.0
824410248441.85616.016.0