SBOSAB4A May   2023  – September 2023 INA700

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Revision History
  6. 5 Pin Configuration and Functions
  7. 6 Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 Recommended Operating Conditions
    4. 6.4 Thermal Information
    5. 6.5 Electrical Characteristics
    6. 6.6 Timing Requirements (I2C)
    7. 6.7 Timing Diagram
    8. 6.8 Typical Characteristics
  8. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Integrated Shunt Resistor
      2. 7.3.2 Safe Operating Area
      3. 7.3.3 Versatile Measurement Capability
      4. 7.3.4 Internal Measurement and Calculation Engine
      5. 7.3.5 High-Precision Delta-Sigma ADC
        1. 7.3.5.1 Low Latency Digital Filter
        2. 7.3.5.2 Flexible Conversion Times and Averaging
      6. 7.3.6 Integrated Precision Oscillator
      7. 7.3.7 Multi-Alert Monitoring and Fault Detection
    4. 7.4 Device Functional Modes
      1. 7.4.1 Shutdown Mode
      2. 7.4.2 Power-On Reset
    5. 7.5 Programming
      1. 7.5.1 I2C Serial Interface
        1. 7.5.1.1 Writing to and Reading Through the I2C Serial Interface
        2. 7.5.1.2 High-Speed I2C Mode
        3. 7.5.1.3 SMBus Alert Response
    6. 7.6 Register Maps
      1. 7.6.1 INA700 Registers
  9. 8 Application and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Device Measurement Range and Resolution
      2. 8.1.2 ADC Output Data Rate and Noise Performance
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
        1. 8.2.2.1 Configure the Device
        2. 8.2.2.2 Set Desired Fault Thresholds
        3. 8.2.2.3 Calculate Returned Values
      3. 8.2.3 Application Curves
  10. 9 Power Supply Recommendations
  11. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  12. 11Device and Documentation Support
    1. 11.1 Documentation Support
      1. 11.1.1 Related Documentation
    2. 11.2 Receiving Notification of Documentation Updates
    3. 11.3 Support Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  13. 12Mechanical, Packaging, and Orderable Information

Package Options

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

8.1.2 ADC Output Data Rate and Noise Performance

The INA700 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 INA700 effective resolution of the ADC can be increased by increasing the conversion time and increasing the number of averages.

Table 8-2 shows the output data rate conversion settings supported by the device. The fastest conversion setting is 50 µs. 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 takes full noise distribution into consideration. The conversion time for the temperature measurement is set to the power-on default value.

Table 8-2 INA700 Noise Performance
ADC CONVERSION TIME PERIOD [µs]OUTPUT SAMPLE AVERAGING [SAMPLES]OUTPUT SAMPLE PERIOD [ms]NOISE-FREE ENOB CURRENT MEASUREMENT
5010.0510.1
840.08410.6
1500.1510.8
2800.2811.2
5400.5412
10521.05212.5
20742.07412.8
41204.1213.3
5040.211.0
840.33611.6
1500.611.8
2801.1212.5
5402.1612.9
10524.20813.1
20748.29614.1
412016.4814.7
50160.812.3
841.34412.3
1502.413.1
2804.4813.5
5408.6413.9
105216.83214.7
207433.18414.7
412065.9215.2
50643.213.4
845.37613.4
1509.613.9
28017.9214.4
54034.5614.7
105267.32815.7
2074132.73615.7
4120263.6815.9
501286.413.5
8410.75213.5
15019.214.7
28035.8414.7
54069.1215.2
1052134.65615.7
2074265.47216
4120527.3616
5025612.814.4
8421.50414.4
15038.414.7
28071.6815.2
540138.2415.9
1052269.31216
2074530.94416
41201054.7216
5051225.614.4
844314.7
15076.815.7
280143.3615.9
540276.4816
1052538.62416
20741061.88816
41202109.4416
50102451.215.2
8486.01615.2
150153.615.7
280286.7216
540552.9616
10521077.24816
20742123.77616
41204218.8816