SNAS517E November   2011  – September 2015 LMP91050

PRODUCTION DATA.  

  1. 1 Features
  2. 2 Applications
  3. 3 Description
  4. 4 Revision History
  5. 5 Description (continued)
  6. 6 Pin Configuration and 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 SPI Interface
    7. 7.7 Timing Characteristics
    8. 7.8 Typical Characteristics
  8. 8 Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagram
    3. 8.3 Feature Description
      1. 8.3.1 Programmable Gain Amplifier
      2. 8.3.2 External Filter
      3. 8.3.3 Offset Adjust
      4. 8.3.4 Common-Mode Generation
      5. 8.3.5 CSB
        1. 8.3.5.1 SCLK
    4. 8.4 Device Functional Modes
    5. 8.5 Programming
      1. 8.5.1 SPI Interface
        1. 8.5.1.1 Interface Pins
        2. 8.5.1.2 Communication Protocol
        3. 8.5.1.3 Registers Organization
    6. 8.6 Register Maps
      1. 8.6.1 Device Configuration
      2. 8.6.2 DAC Configuration
      3. 8.6.3 SDIO Mode
  9. 9 Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
      2. 9.2.2 Detailed Design Procedure
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12Device and Documentation Support
    1. 12.1 Community Resources
    2. 12.2 Trademarks
    3. 12.3 Electrostatic Discharge Caution
    4. 12.4 Glossary
  13. 13Mechanical, Packaging, and Orderable Information

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10 Power Supply Recommendations

Because the LMP91050 is used in a sampled data system, care must be taken to maintain power supply noise below an acceptable level, which will depend on the requirements of the application. In all cases, follow the manufacturer’s design recommendations for the power conditioning device used in the system. The LMP91050 offers excellent power supply rejection over a wide range of frequencies, but adequate power supply bypassing should always be used (see Figure 26). If using a switching supply, additional filtering may be required particularly if the switcher harmonics fall within the passband of the filters used in the system. Ensure that the selected power conditioning device is capable of sourcing the current required by the LMP91050.