SNAA411 September 2024 CDCLVC1102 , CDCLVC1103 , CDCLVC1104 , CDCLVC1110 , CDCLVD1204 , LMK00301 , LMK00304 , LMK00306 , LMK00308 , LMK01801 , LMK04832 , LMK1C1102 , LMK1C1103 , LMK1C1104 , LMK1C1106 , LMK1C1108 , LMK1D1204 , LMK1D1208 , LMX2485 , LMX2491 , LMX2572 , LMX2592 , LMX2594 , LMX2595 , LMX2820
Slew rate of sine wave is dependent on frequency of operation and voltage of signal. Complying with input slew rate requirement for clock devices is necessary to provide certain phase noise performance.
To imporve phase noise of clock devices, higher slew input is recommended. Most vendors have this recommendation outlined in the data sheet for buffer, synthesizer, and jitter cleaners.
Slew rate of sine wave input signal can be changed by increasing/decreasing frequency or voltage as shown in Equation 1.
Both of these variables cannot be controlled when using a fixed output amplitude and frequency source which often is the case for systems using OCXO/TCXOs.