SLOS681C January   2011  – August 2019 DRV632

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
    1.     Device Images
      1.      Simplified Diagram
  4. 4 Revision History
  5. 5 Device Comparison Table
  6. 6 Pin Configuration and Functions
    1.     Pin Functions
  7. 7 Specifications
    1. 7.1 Absolute Maximum Ratings
    2. 7.2 ESD Ratings
    3. 7.3 Recommended Operating Conditions
    4. 7.4 Thermal Information
    5. 7.5 Electrical Characteristics
    6. 7.6 Operating Characteristics
    7. 7.7 Typical Characteristics
  8. 8 Parameter Measurement Information
  9. 9 Detailed Description
    1. 9.1 Overview
    2. 9.2 Functional Block Diagram
    3. 9.3 Feature Description
      1. 9.3.1 Line Driver Amplifiers
      2. 9.3.2 Charge-Pump Flying Capacitor and PVSS Capacitor
      3. 9.3.3 Decoupling Capacitors
      4. 9.3.4 Gain-Setting Resistor Ranges
      5. 9.3.5 Input-Blocking Capacitors
      6. 9.3.6 DRV632 UVP Operation
      7. 9.3.7 External Undervoltage Detection
    4. 9.4 Device Functional Modes
      1. 9.4.1 Using the DRV632 as a Second-Order Filter
      2. 9.4.2 Mute Mode
  10. 10Application and Implementation
    1. 10.1 Application Information
    2. 10.2 Typical Application
      1. 10.2.1 Design Requirements
      2. 10.2.2 Detailed Design Procedure
        1. 10.2.2.1 Charge-Pump Flying, PVSS and Decoupling Capacitors
        2. 10.2.2.2 Second-Order Active Low-Pass Filters
        3. 10.2.2.3 UVP Resistor Divider
      3. 10.2.3 Application Curves
  11. 11Power Supply Recommendations
  12. 12Layout
    1. 12.1 Layout Guidelines
      1. 12.1.1 Gain-Setting Resistors
    2. 12.2 Layout Example
  13. 13Device and Documentation Support
    1. 13.1 Device Support
      1. 13.1.1 Development Support
    2. 13.2 Community Resources
    3. 13.3 Trademarks
    4. 13.4 Electrostatic Discharge Caution
    5. 13.5 Glossary
  14. 14Mechanical, Packaging, and Orderable Information

11 Power Supply Recommendations

The device is designed to operate from an input voltage supply range between 3 V and 3.6 V. This input supply must be well-regulated. If the input supply is located more than a few inches from the DRV632 device, additional bulk capacitance may be required in addition to the ceramic bypass capacitors. An electrolytic capacitor with a value of 47 µF is a typical choice.

Placing a decoupling capacitor close to the DRV632 improves the performance of the line-driver amplifier. An low equivalent-series-resistance (ESR) ceramic capacitor with a value of 1 µF is a typical choice.

If the DRV632 is used in highly noise-sensitive circuits, TI recommends adding a small LC filter on the VDD connection.