SNAU291 October   2023

 

  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. 2Hardware
    1. 2.1 EVM Quick Start
      1. 2.1.1 Hardware Setup
      2. 2.1.2 EVM Measurements
    2. 2.2 Device Operation Modes
    3. 2.3 EVM Configuration
      1. 2.3.1 Power Supply
      2. 2.3.2 Logic Input and Outputs
      3. 2.3.3 Clock Input
      4. 2.3.4 Clock Outputs
      5. 2.3.5 Status Outputs, LEDs and Test Points
  8. 3Software
    1. 3.1 Software Installation
      1. 3.1.1 Software Setup
      2. 3.1.2 Program and Setup
    2. 3.2 TICS Pro LMKDB1108 Software
      1. 3.2.1 Input
        1. 3.2.1.1 Input Interface Type
        2. 3.2.1.2 Input Termination
        3. 3.2.1.3 Auto Output Disable (AOD)
        4. 3.2.1.4 LOS Event
        5. 3.2.1.5 LOS Readback
      2. 3.2.2 Device Info
        1. 3.2.2.1 EVM Setup
        2. 3.2.2.2 SMBus
      3. 3.2.3 Output
        1. 3.2.3.1 SMBus
        2. 3.2.3.2 OE Pin Control
        3. 3.2.3.3 Side Band Interface (SBI)
  9. 4Implementation Results
    1. 4.1 Typical Phase Noise Characteristic
  10. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  11. 6Compliance Information
    1. 6.1 Compliance and Certifications
  12. 7References

2.3.1 Power Supply

The LMKDB1108 has VDDA and VDD supply pins that operate from 1.8-V ± 10% and 3.3-V ± 10%.

For 3.3-V supply option, EVM has an on-board LDO which is selected by default to reduce the need for external power supply and operate the EVM using USB cable with a PC.

To use 1.8-V ± 10% supply on the EVM, J8 can be used to force external supply voltage. The EVM has two different method of supplying power to the device as listed in Table 3-3.

Table 2-3 EVM Power Modes
EVM Power Mode Designator Position Supply Voltage Description
External J8 External Supply 1.8-V ± 10% or 3.3-V ± 10% External supply option is selected.
JP12 1-2
USB J8 Not Connected 3.3-V ± 10% USB 3.3-V supply option is selected.
JP12 2-3