SLYS041A March   2020  – March 2021 INA381-Q1

PRODUCTION DATA  

  1. Features
  2. Applications
  3. Description
  4. Revision History
  5. Pin Configuration and Functions
  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 Typical Characteristics
  7. Detailed Description
    1. 7.1 Overview
    2. 7.2 Functional Block Diagram
    3. 7.3 Feature Description
      1. 7.3.1 Wide Input Common-Mode Voltage Range
      2. 7.3.2 Precise Low-Side Current Sensing
      3. 7.3.3 High Bandwidth and Slew Rate
      4. 7.3.4 Alert Output
      5. 7.3.5 Adjustable Overcurrent Threshold
      6. 7.3.6 Comparator Hysteresis
    4. 7.4 Device Functional Modes
      1. 7.4.1 Alert Modes
        1. 7.4.1.1 Transparent Output Mode
        2. 7.4.1.2 Latch Output Mode
  8. Applications and Implementation
    1. 8.1 Application Information
      1. 8.1.1 Select a Current-Sensing Resistor
        1. 8.1.1.1 Select a Current-Sensing Resistor: Example
      2. 8.1.2 Increase Comparator Hysteresis
      3. 8.1.3 Operation With Common-Mode Transients Greater Than 26 V
      4. 8.1.4 Input Filtering
    2. 8.2 Typical Applications
      1. 8.2.1 Bidirectional Window Comparator
        1. 8.2.1.1 Design Requirements
        2. 8.2.1.2 Detailed Design Procedure
        3. 8.2.1.3 Application Curve
      2. 8.2.2 Solenoid Low-Side Current Sensing
        1. 8.2.2.1 Design Requirements
        2. 8.2.2.2 Detailed Design Procedure
        3. 8.2.2.3 Application Curve
  9. Power Supply Recommendations
  10. 10Layout
    1. 10.1 Layout Guidelines
    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 Support 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

Typical Characteristics

at TA = 25°C, VS = 5 V, VIN+ = 12 V, and alert pullup resistor = 10 kΩ (unless otherwise noted)

GUID-9647B341-C06A-4053-A8A1-3D6F4FBF6449-low.gif
VIN+ = 0 V
Figure 6-1 Input Offset Voltage Production Distribution (INA381A1-Q1)
GUID-8F7A7C77-1B05-4C43-AE30-F366763ECF17-low.gif
VIN+ = 0 V
Figure 6-3 Input Offset Voltage Production Distribution (INA381A3-Q1)
GUID-42D6AF29-FF56-4993-A5B3-F689A63B34D8-low.gif
VIN+ = 0 V
Figure 6-5 Offset Voltage vs. Temperature
GUID-09BF3CBB-F9B3-4AF0-A1A9-C4A82A9C6192-low.gifFigure 6-7 Common-Mode Rejection Production Distribution (INA381A2-Q1)
GUID-5288C452-4306-4F05-BCB6-4B3F7A75671A-low.gifFigure 6-9 Common-Mode Rejection Production Distribution (INA381A4-Q1)
GUID-0D30628A-9547-437E-B2D7-121DC90B0680-low.gifFigure 6-11 Gain Error Production Distribution (INA381A1-Q1)
GUID-AFD2C9F2-21BB-46D4-BB2A-7FBB9BDC0F46-low.gifFigure 6-13 Gain Error Production Distribution (INA381A3-Q1)
GUID-0D0165A9-B39E-4299-8B27-B14127676963-low.gifFigure 6-15 Gain Error vs. Temperature
GUID-3DF98F23-CD5E-46B5-AB56-939F513DAA6E-low.gifFigure 6-17 Power-Supply Rejection Ratio vs. Frequency
GUID-9238FF7E-BB77-4DF9-B1EF-6DCBAA173830-low.gifFigure 6-19 Output Voltage Swing vs. Output Current
GUID-C506593A-7CC3-48DE-8073-FBB3218FD174-low.gif
Supply voltage = 0 V
Figure 6-21 Input Bias Current vs. Common-Mode Voltage (Both Inputs, Shutdown)
GUID-F5E80182-114A-4E43-9A21-9ADEBDE176F0-low.gifFigure 6-23 Quiescent Current vs. Temperature
GUID-67AD270B-4C0E-4A15-BDC5-554792F2B0CD-low.gifFigure 6-25 Input-Referred Voltage Noise vs. Frequency (INA381A3-Q1 Devices)
GUID-B5AF4A84-5C70-46B8-8BD1-E6BC44850CD1-low.gif
80-mVPP input step
Figure 6-27 Step Response
GUID-FDB5BB5B-4469-4F15-A6A8-E7644AE48F8C-low.gifFigure 6-29 Inverting Differential Input Overload
GUID-756BD031-B015-4FE2-8577-726DBDD79E17-low.gifFigure 6-31 Start-Up Response
GUID-6591DC10-14EC-459E-88C7-63F01A9F2BF4-low.gifFigure 6-33 Comparator Propagation Delay
GUID-8E6883AB-5DAC-46E1-9176-C06445A371E9-low.gifFigure 6-35 Comparator Propagation Delay vs. Temperature
GUID-C0DE7529-FF6B-482B-9BD6-6CBA2EC8C87C-low.gifFigure 6-37 Low-Level Output Voltage vs. Low-Level Output Current
GUID-0CB1A9B6-EC41-47FD-9880-EC290B9BEEC3-low.gifFigure 6-39 Reset and Alert Voltage Response
GUID-C25F3D7E-BE70-46A0-95A0-98C6D90C1606-low.gif
VIN+ = 0 V
Figure 6-2 Input Offset Voltage Production Distribution (INA381A2-Q1)
GUID-8F5498FF-673E-4CAC-BA55-9313D99370D3-low.gif
VIN+ = 0 V
Figure 6-4 Input Offset Voltage Production Distribution (INA381A4-Q1)
GUID-7E2F6889-60D1-4BF6-807C-8D7C062972D5-low.gifFigure 6-6 Common-Mode Rejection Production Distribution (INA381A1-Q1)
GUID-4011442F-1142-4552-AE06-F70FFDFE8A22-low.gifFigure 6-8 Common-Mode Rejection Production Distribution (INA381A3-Q1)
GUID-93CE9BFA-E2C6-4901-A428-62846D4D270D-low.gifFigure 6-10 Common-Mode Rejection Ratio vs. Temperature
GUID-C3E07806-F1C2-47A6-A888-C4CC42937238-low.gifFigure 6-12 Gain Error Production Distribution (INA381A2-Q1)
GUID-44AADA55-C5B1-4B2E-A2A5-F9932EBBB618-low.gifFigure 6-14 Gain Error Production Distribution (INA381A4-Q1)
GUID-42B79150-9EF2-48CA-BAC2-A63C2837898E-low.gifFigure 6-16 Gain vs. Frequency
GUID-AD3CB716-A748-439E-87DA-53739D43854A-low.gifFigure 6-18 Common-Mode Rejection Ratio vs. Frequency
GUID-9190D7E8-F598-4435-83AE-5B59C01A2A3F-low.gif
Supply voltage = 5 V
Figure 6-20 Input Bias Current vs. Common-Mode Voltage
GUID-0BC7070F-3CDE-48D2-86AC-A6B3C2E07F10-low.gifFigure 6-22 Input Bias Current vs. Temperature
GUID-9E357C11-1973-44D1-984F-E24A6A4291EA-low.gifFigure 6-24 Quiescent Current vs. Common-Mode Voltage
GUID-87B3D1F3-2784-424F-A018-6019A1598E92-low.gifFigure 6-26 0.1-Hz to 10-Hz Voltage Noise (Referred-to-Input)
GUID-3A578667-A789-4949-990B-67E394F246F0-low.gifFigure 6-28 Common-Mode Voltage Transient Response
GUID-E24FDF66-48C5-41C7-833E-58E6701C0BFA-low.gifFigure 6-30 Noninverting Differential Input Overload
GUID-050B60D2-5C49-4BAA-A2CB-818529B5E3C2-low.gifFigure 6-32 Brownout Recovery
GUID-48A8FFA9-2A25-4268-914B-9506BBE81BF8-low.gifFigure 6-34 VSENSE Voltage Response
GUID-CCEC3134-AD52-4CFE-A601-BEDC85FC007F-low.gifFigure 6-36 Total Propagation Delay vs. Temperature
GUID-E3DC488A-47B5-4F11-9F3A-C22EE036809E-low.gifFigure 6-38 Hysteresis vs. Temperature