SNAU296 December   2023 LMK5C33414A

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2EVM Quick Start
  6. 3EVM Configuration
    1. 3.1  Power Supply
    2. 3.2  Logic Inputs and Outputs
    3. 3.3  Switching Between I2C and SPI
    4. 3.4  Generating SYSREF Request
    5. 3.5  XO Input
      1. 3.5.1 48-MHz TCXO (Default)
      2. 3.5.2 External Clock Input
      3. 3.5.3 Additional XO Input Options
      4. 3.5.4 APLL Reference Options
    6. 3.6  Reference Clock Inputs
    7. 3.7  Clock Outputs
    8. 3.8  Status Outputs and LEDs
    9. 3.9  Requirements for Making Measurements
    10. 3.10 Typical Phase Noise Characteristics
  7. 4EVM Schematics
    1. 4.1  Power Supply Schematic
    2. 4.2  Alternative Power Supply Schematic
    3. 4.3  Power Distribution Schematic
    4. 4.4  LMK5C33414A and Input References IN0 to IN3 Schematic
    5. 4.5  Clock Outputs OUT0 to OUT3 Schematic
    6. 4.6  Clock Outputs OUT4 to OUT9 Schematic
    7. 4.7  Clock Outputs OUT10 to OUT13 and Clock Inputs IN2 and IN3 Schematic
    8. 4.8  XO Schematic
    9. 4.9  Logic I/O Interfaces Schematic
    10. 4.10 USB2ANY Schematic
  8. 5EVM Bill of Materials
    1. 5.1 Loop Filter and Vibration Nonsensitive Capacitors
  9. 6Appendix A - TICS Pro LMK5C33414A Software
    1. 6.1  Using the Start Page
      1. 6.1.1 Step 1
      2. 6.1.2 Step 2
      3. 6.1.3 Step 3
      4. 6.1.4 Step 4
      5. 6.1.5 Step 5
      6. 6.1.6 Step 6
      7. 6.1.7 Step 7
    2. 6.2  Using the Status Page
    3. 6.3  Using the Input Page
      1. 6.3.1 Cascaded Configurations
        1. 6.3.1.1 Cascade VCO to APLL Reference
    4. 6.4  Using APLL1, APLL2, and APLL3 Pages
      1. 6.4.1 APLL DCO
    5. 6.5  Using the DPLL1, DPLL2, and DPLL3 Pages
    6. 6.6  Using the Validation Page
      1. 6.6.1 DPLL DCO
    7. 6.7  Using the GPIO Page
    8. 6.8  SYNC/SYSREF/1-PPS Page
    9. 6.9  Using the Outputs Page
    10. 6.10 EEPROM Page
    11. 6.11 Design Report Page

5.1 Loop Filter and Vibration Nonsensitive Capacitors

The capacitors used on the EVM are X7R, which are ferromagnetic and, therefore, are sensitive to vibration due to the piezoelectric effect. TI recommends to use non-ferromagnetic capacitors such as NP0, C0G, or Tantalum for applications in which the best performance is required in the presence of vibration.

At and below 47 nF, C0G/NP0 capacitors are available in 0805 sized packages. For values 0.1 µF and above, Tantalum capacitors can be considered for vibration immune loop filter components.

Table 5-2 Examples of Substitute Capacitors Which are Vibration Immune
CAPACITOR VALUEVIBRATION SENSITIVE, X7RVIBRATION IMMUNE
3.3 nFC0603C332K5RACTU, 0603GRM1885C1H332JA01D, C0G/NP0, 0603
33 nFC0603C333J3RACTU, 0603C2012C0G1H333J125AA, C0G/NP0, 0805
47 nF06035C473JAT2A, 0603C0805X473G3GEC7800, C0G/NP0, 0805 C0805C473J3GACTU, C0G/NP0, 0805
0.1 µFC0603C104J3RACTU, 0603GRM31C5C1E104JA01L, C0G/NP0, 1206 TAJR104K020RNJ, Tantalum, 0805
0.47 µFGRM188R71A474KA61D, 0603F921C474MPA, Tantalum, 0805