SBOSAF3 November   2023 TMCS1126

ADVANCE INFORMATION  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Device Comparison
  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 Insulation Specifications
    6. 6.6 Electrical Characteristics
  8. 7 Parameter Measurement Information
    1. 7.1 Accuracy Parameters
      1. 7.1.1 Sensitivity Error
      2. 7.1.2 Offset Error and Offset Error Drift
      3. 7.1.3 Nonlinearity Error
      4. 7.1.4 Power Supply Rejection Ratio
      5. 7.1.5 Common-Mode Rejection Ratio
      6. 7.1.6 External Magnetic Field Errors
    2. 7.2 Transient Response Parameters
      1. 7.2.1 CMTI, Common-Mode Transient Immunity
    3. 7.3 Safe Operating Area
      1. 7.3.1 Continuous DC or Sinusoidal AC Current
  9. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Current Input
      2. 8.3.2 Input Isolation
      3. 8.3.3 Ambient Field Rejection
      4. 8.3.4 High-Precision Signal Chain
        1. 8.3.4.1 Temperature Stability
        2. 8.3.4.2 Lifetime and Environmental Stability
      5. 8.3.5 Internal Reference Voltage
      6. 8.3.6 Current-Sensing Measurable Ranges
      7. 8.3.7 Overcurrent Detection
    4. 8.4 Device Functional Modes
      1. 8.4.1 Power-Down Behavior
  10. 9 Application and Implementation
    1. 9.1 Application Information
      1. 9.1.1 Total Error Calculation Examples
        1. 9.1.1.1 Room-Temperature Error Calculations
        2. 9.1.1.2 Full-Temperature Range Error Calculations
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
    3. 9.3 Power Supply Recommendations
    4. 9.4 Layout
      1. 9.4.1 Layout Guidelines
      2. 9.4.2 Layout Example
  11. 10Device and Documentation Support
    1. 10.1 Device Support
      1. 10.1.1 Development Support
    2. 10.2 Documentation Support
      1. 10.2.1 Related Documentation
    3. 10.3 Receiving Notification of Documentation Updates
    4. 10.4 Support Resources
    5. 10.5 Trademarks
    6. 10.6 Electrostatic Discharge Caution
    7. 10.7 Glossary
  12. 11Revision History
  13. 12Mechanical, Packaging, and Orderable Information
    1. 12.1 Package Option Addendum
    2. 12.2 Tape and Reel Information

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • DVG|10
散热焊盘机械数据 (封装 | 引脚)
订购信息

9.1.1.1 Room-Temperature Error Calculations

For room-temperature total error calculations, specifications across temperature and drift are ignored. As an example, consider a TMCS1126B2A with a supply voltage (VS) of 3.1 V and a worst-case common-mode excursion of 600 V to calculate operating-point-specific parameters. Consider a measurement error due to an external 400-µT magnetic field generated by a 20ADC current flowing through an adjacent trace or conductor that is 10 mm away. The full-scale current range of the device in specified conditions is slightly greater than ±31 A, as shown in the Device Comparison table. In this case, the calculating error at both 25 A and 12.5 A highlights error dependencies on the input-current level. Table 9-1 shows the individual error components and RSS maximum total error calculations at room temperature under the conditions specified. Relative to other errors, the additional errors from CMRR, external ambient magnetic fields BEXT and nonlinearity are negligible, and can typically be excluded from total error calculations.

Table 9-1 Total Error Calculation: Room Temperature Example
ERROR COMPONENTSYMBOLEQUATION

ERROR AT

IIN = 25 A

ERROR AT

IIN = 12.5 A
Input offset erroreIoseIos=IOSIIN=VOES×IIN0.10%0.19%
PSRR errorePSRRePSRR= PSRR×VS-3.3IIN0.04%0.08%
CMRR erroreCMRReCMRR= CMRR×VCMIIN0.01%0.02%
External Field erroreBexteBext=BEXT×CMFRIIN0.02%0.03%
Sensitivity erroreSSpecified in Electrical Characteristics0.45%0.45%
Nonlinearity erroreNLSpecified in Electrical Characteristics0.10%0.10%
RSS total erroreRSSeRSS=eIos+ePSRR+eCMRR2+eBext2+eS2+eNL20.48%0.55%