SBOS938C October   2018  – June 2020 INA901-SP

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Simplified Schematic
  4. 4 Revision History
  5. 5 Pin Configuration and Functions
    1.     Pin 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
    6. 6.6 Quality Conformance Inspection
    7. 6.7 Typical Characteristics
  7. 7 Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Basic Connection
      2. 7.3.2 Selecting RS
      3. 7.3.3 Transient Protection
    4. 7.4 Device Functional Modes
      1. 7.4.1 First- or Second-Order 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: VSENSE < 20 mV, –15 V ≤ VCM < 0; and Low VSENSE Case 3: VSENSE < 20 mV, VS < VCM ≤ 65 V
        4. 7.4.2.4 Low VSENSE Case 2: VSENSE < 20 mV, 0 V ≤ VCM ≤ VS
  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
      1. 10.1.1 RFI and EMI
    2. 10.2 Layout Example
  11. 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 Community Resources
    4. 11.4 Trademarks
    5. 11.5 Electrostatic Discharge Caution
    6. 11.6 Glossary
  12. 12Mechanical, Packaging, and Orderable Information

Package Options

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

7.3.3 Transient Protection

The –15-V to 65-V common-mode range of INA901-SP is ideal for withstanding fault conditions ranging from 12-V battery reversal up to 65-V transients because no additional protective components are needed up to those levels. In the event that the INA901-SP is exposed to transients on the inputs in excess of its ratings, external transient absorption with semiconductor transient absorbers (Zeners or Transzorbs) are necessary.

Use of MOVs or VDRs is not recommended except when they are used in addition to a semiconductor transient absorber. Select the transient absorber such that it never allows the INA901-SP to be exposed to transients greater than 65 V (that is, allow for transient absorber tolerance, as well as additional voltage because of transient absorber dynamic impedance). Despite the use of internal Zener-type ESD protection, the INA901-SP is not suited to using external resistors in series with the inputs because the internal gain resistors can vary up to ±30%, but are tightly matched (if gain accuracy is not important, then resistors can be added in series with the INA901-SP inputs with two equal resistors on each input).