SNAU306 June   2024 LMKDB1104

 

  1.   1
  2.   Description
  3.   Features
  4.   Applications
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2EVM Quick Start
    1. 2.1 Hardware Setup
    2. 2.2 Software Setup
      1. 2.2.1 TICS Pro GUI Setup
      2. 2.2.2 Power Up Sequence
    3. 2.3 EVM Measurements
  8. 3Hardware
    1. 3.1 Device Operation Modes
    2. 3.2 EVM Configuration
      1. 3.2.1 Power Supply
      2. 3.2.2 Logic Input and Outputs
      3. 3.2.3 Clock Input
      4. 3.2.4 Clock Outputs
      5. 3.2.5 Status Outputs, LEDs and Test Points
  9. 4Software
    1. 4.1 TICS Pro LMKDB1104 Software
      1. 4.1.1 Input
        1. 4.1.1.1 Input Interface Type
        2. 4.1.1.2 Input Termination
        3. 4.1.1.3 Auto Output Disable (AOD)
        4. 4.1.1.4 LOS Event
        5. 4.1.1.5 LOS Readback
      2. 4.1.2 Device Info and EVM Setup
        1. 4.1.2.1 Device Info
        2. 4.1.2.2 EVM Setup
        3. 4.1.2.3 SMBus
      3. 4.1.3 Output
        1. 4.1.3.1 SMBus
          1. 4.1.3.1.1 Programmable Output Slew Rate Control
        2. 4.1.3.2 OE Pins and Slew Rate Control
        3. 4.1.3.3 Side Band Interface (SBI)
  10. 5Implementation Results
    1. 5.1 Typical Phase Noise Characteristic
  11. 6Hardware Design Files
    1. 6.1 Schematics
    2. 6.2 PCB Layouts
    3. 6.3 Bill of Materials (BOM)
  12. 7Compliance Information
    1. 7.1 Compliance and Certifications
  13. 8Additional Information
    1. 8.1 Trademarks
  14. 9References

3.2.1 Power Supply

The LMKDB1104 has VDDA and VDD supply pins that operate from 1.8V ± 10% and 3.3V ± 10%. The EVM has two different methods of supplying power to the device as listed in Table 4-2.

For 3.3V supply option, EVM has an onboard LDO to reduce the need for external power supply and operate the EVM using USB cable with a PC.

To use 1.8V ± 10% supply on the EVM, J18 can be used to force external supply voltage.

Table 3-2 EVM Power Modes
EVM Power Mode Designator Position Supply Voltage Description
External (default) J18 External supply 1.8V ± 10% or 3.3V ± 10% External supply option is selected.
JP10 1-2
USB J18 Not connected 3.3V ± 10% USB 3.3V supply option is selected.
JP10 2-3