SNOSDI6 October   2026 LMP8640-Q1

PRODUCTION DATA  

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 Electrical Characteristics 2.7V
   6. 6.6 Electrical Characteristics 5 V
   7. 6.7 Electrical Characteristics 12V
   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 Selection of Sense Resistor
         1. 7.3.1.1 Resistor Power Rating and Thermal Issues
         2. 7.3.1.2 Using PCB Trace as a Sense Resistor
      2. 7.3.2 Sense Line Inputs
      3. 7.3.3 Effects of Series Resistance on Sense Lines
   4. 7.4 Device Functional Modes
      1. 7.4.1 Bias Current at Low Common Mode Voltage
      2. 7.4.2 Applying Input Voltage With No Supply Voltage
      3. 7.4.3 Driving an ADC
9. 8 Application and Implementation
   1. 8.1 Application Information
   2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Design Procedure
         1. 8.2.2.1 First Step – LMP8640-Q1 or LMP8640HV-Q1 Selection
         2. 8.2.2.2 Second Step – Gain Option Selection
         3. 8.2.2.3 Third Step – Shunt Resistor Selection
      3. 8.2.3 Application Curve
   3. 8.3 What to Do and What Not to Do
   4. 8.4 Power Supply Recommendations
   5. 8.5 Layout
      1. 8.5.1 Layout Guidelines
      2. 8.5.2 Layout Example
10. 9 Device and Documentation Support
    1. 9.1 Device Support
       1. 9.1.1 Development Support
    2. 9.2 Documentation Support
       1. 9.2.1 Related Documentation
    3. 9.3 Receiving Notification of Documentation Updates
    4. 9.4 Support Resources
    5. 9.5 Trademarks
    6. 9.6 Electrostatic Discharge Caution
    7. 9.7 Glossary
11. 10Revision History
12. 11Mechanical, Packaging, and Orderable Information