ZHCS766A February   2012  – December 2021 INA230

PRODUCTION DATA  

  1. 1 特性
  2. 2 应用
  3. 3 说明
  4. 4 Revision History
  5. 5 Related Products
  6. 6 Pin Configuration and Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Timing Requirements (I2C)
    7. 7.7 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Basic ADC Functions
      2. 8.3.2 Power Calculation
      3. 8.3.3 Alert Pin
    4. 8.4 Device Functional Modes
      1. 8.4.1 Averaging and Conversion Time Considerations
      2. 8.4.2 Filtering and Input Considerations
    5. 8.5 Programming
      1. 8.5.1 Programming the Calibration Register
      2. 8.5.2 Programming the INA230 Power Measurement Engine
        1. 8.5.2.1 Calibration Register and Scaling
      3. 8.5.3 Simple Current Shunt Monitor Usage (No Programming Necessary)
      4. 8.5.4 Default INA230 Settings
      5. 8.5.5 Bus Overview
        1. 8.5.5.1 Serial Bus Address
        2. 8.5.5.2 Serial Interface
      6. 8.5.6 Writing to and Reading From the I2C Serial Interface
        1. 8.5.6.1 High-Speed I2C Mode
      7. 8.5.7 SMBus Alert Response
    6. 8.6 Register Maps
      1. 8.6.1 Configuration Register (00h, Read/Write)
      2. 8.6.2 AVG Bit Settings [11:9]
      3. 8.6.3 VBUS CT Bit Settings [8:6]
      4. 8.6.4 VSH CT Bit Settings [5:3]
      5. 8.6.5 Mode Settings [2:0]
      6. 8.6.6 Data Output Register
        1. 8.6.6.1 Shunt Voltage Register (01h, Read-Only)
        2. 8.6.6.2 Bus Voltage Register (02h, Read-Only) (1)
        3. 8.6.6.3 Power Register (03h, Read-Only)
        4. 8.6.6.4 Current Register (04h, Read-Only)
        5. 8.6.6.5 Calibration Register (05h, Read/Write)
        6. 8.6.6.6 Mask/Enable Register (06h, Read/Write)
        7. 8.6.6.7 Alert Limit Register (07h, Read/Write)
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Applications
      1. 9.2.1 High-Side Sensing Circuit Application
        1. 9.2.1.1 Design Requirements
        2. 9.2.1.2 Detailed Design Procedure
        3. 9.2.1.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Documentation Support
      1. 12.1.1 Related Documentation
    2. 12.2 接收文档更新通知
    3. 12.3 支持资源
    4. 12.4 Trademarks
    5. 12.5 Electrostatic Discharge Caution
    6. 12.6 术语表
  13. 13Mechanical, Packaging, and Orderable Information

封装选项

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9.2.1.3 Application Curves

Figure 9-2 shows the Alert pin response to a shunt voltage over-limit of 80 mV for a conversion time (tCT) of 1.1 ms and averaging set to 1. Figure 9-3 shows the response for the same limit but with the conversion time reduced to 140 µs.

GUID-2CAB7D05-4623-483D-B7E8-44D3E7CD1866-low.gif
See Table 9-2 tCT = 1.1 ms
See Table 9-4 See Table 9-5
Figure 9-2 Alert Response
GUID-95C59C60-76EB-4AB9-A79C-2DBB84F461F0-low.gif
See Table 9-3 tCT = 140 µs
See Table 9-4 See Table 9-5
Figure 9-3 Alert Response
Table 9-2 Configuration register (00h) Settings for Figure 9-2 (Value = 4025h)
BIT #D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
BIT
NAME		RST———AVG2AVG1AVG0VBUSCT2VBUSCT1VBUSCT0VSHCT2VSHCT1VSHCT0MODE3MODE2MODE1
VALUE0100000000100101
Table 9-3 Configuration register (00h) Settings for Figure 9-3 (Value = 4005h)
BIT #D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
BIT
NAME		RST———AVG2AVG1AVG0VBUSCT2VBUSCT1VBUSCT0VSHCT2VSHCT1VSHCT0MODE3MODE2MODE1
VALUE0100000000000101
Table 9-4 Mask/Enable register (06h) Settings for Figure 9-2 and Figure 9-3 (Value = 8000h)
BIT #D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
BIT
NAME		SOLSULBOLBULPOLCNVR—————AFFCVRFOVFAPOLLEN
VALUE1000000000000000
Table 9-5 Alert Limit register (07h) Settings for Figure 9-2 and Figure 9-3 (Value = 7D00)
BIT #D15D14D13D12D11D10D9D8D7D6D5D4D3D2D1D0
BIT
NAME		AUL15AUL14AUL13AUL12AUL11AUL10AUL9AUL8AUL7AUL6AUL5AUL4AUL3AUL2AUL1AUL0
VALUE0111110100000000
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