CDCE421 Datasheet, PDF (18/30 Pages) Texas Instruments – Fully Integrated Wide-Range, Low-Jitter, Crystal-Oscillator Clock Generator

CDCE421
SCAS842 – APRIL 2007
APPENDIX A: TEST CONFIGURATIONS
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Test setups are used to characterize the CDCE421 device in ac and dc terminations. The following figures
illustrate all four setups used to terminate the clock signal driven by the device under test.
LVDS
100 W
LVDS
Figure 10. LVDS DC Termination Test Configuration
S0248-01
LVPECL
LVPECL
50 W
50 W
VCC – 2V
Figure 11. LVPECL DC Termination Test Configuration
S0249-01
LVDS
Phase Noise
Analyzer
50 W
S0250-01
Figure 12. LVDS AC Termination Test Configuration
LVPECL
Phase Noise
Analyzer
150 W
150 W
50 W
S0251-01
Figure 13. LVPECL AC Termination Test Configuration
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