SBOS393F March   2007  – June 2021 INA203 , INA204 , INA205

PRODUCTION DATA  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
  6. 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: Current-Shunt Monitor
    6. 6.6 Electrical Characteristics: Comparator
    7. 6.7 Electrical Characteristics: Reference
    8. 6.8 Electrical Characteristics: General
    9. 6.9 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagrams
    3. 7.3 Feature Description
      1. 7.3.1 Basic Connections
      2. 7.3.2 Selecting RSHUNT
      3. 7.3.3 Comparator
      4. 7.3.4 Comparator Delay (14-Pin Version Only)
      5. 7.3.5 Comparator Maximum Input Voltage Range
    4. 7.4 Device Functional Modes
      1. 7.4.1 Input Filtering
      2. 7.4.2 Accuracy Variations as a Result Of VSENSE and Common-Mode Voltage
        1. 7.4.2.1 Normal Case 1: VSENSE ≥ 20 mV, VCM ≥ VS
        2. 7.4.2.2 Normal Case 2: VSENSE ≥ 20 mV, VCM < VS
        3. 7.4.2.3 Low VSENSE Case 1
        4. 7.4.2.4 Low VSENSE Case 2: VSENSE < 20 mV, 0 V ≤ VCM ≤ VS
      3. 7.4.3 Transient Protection
      4. 7.4.4 Output Voltage Range
      5. 7.4.5 Reference
  8. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curves
  9. 9 Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    2. 10.2 Layout Example
  11. 11Device and Documentation Support
    1. 11.1 Related Links
    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
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

Refer to the PDF data sheet for device specific package drawings

Mechanical Data (Package|Pins)
  • D|14
  • DGS|10
Thermal pad, mechanical data (Package|Pins)
Orderable Information

7.4.2 Accuracy Variations as a Result Of VSENSE and Common-Mode Voltage

The accuracy of the INA203, INA204, and INA205 current shunt monitors is a function of two main variables: VSENSE (VIN+ – VIN–) and common-mode voltage, VCM, relative to the supply voltage, VS. VCM is expressed as (VIN+ + VIN–) / 2; however, in practice, VCM is seen as the voltage at VIN+ because the voltage drop across VSENSE is usually small.

This section addresses the accuracy of these specific operating regions:

  • Normal Case 1: VSENSE ≥ 20 mV, VCM ≥ VS
  • Normal Case 2: VSENSE ≥ 20 mV, VCM < VS
  • Low VSENSE Case 1: VSENSE < 20 mV, –16 V ≤ VCM < 0
  • Low VSENSE Case 2: VSENSE < 20 mV, 0 V ≤ VCM ≤ VS
  • Low VSENSE Case 3: VSENSE < 20 mV, VS < VCM ≤ 80 V