特性
- Dual differential 3.3V LVPECL outputs
- Selectable crystal oscillator interface or LVCMOS/LVTTL REF_CLK
- Output frequency range: 31.25MHz to 700MHz
- Crystal input frequency range: 12MHz to 25MHz
- VCO range: 250MHz to 700MHz
- Parallel or serial interface for programming counter and output dividers
- RMS period jitter: 3.5ps (maximum)
- Cycle-to-Cycle jitter: 25ps (maximum)
- 3.3V supply voltage
- 0 °C to 70 °C ambient operating temperature
- Available in lead-free (RoHS 6) package
8432-51 - Block Diagram
描述
The 8432-51 is a general-purpose, dual-output crystal-to-3.3V differential LVPECL high-frequency synthesizer. The 8432-51 has a selectable REF_CLK or crystal input. The VCO operates at a frequency range of 250MHz to 700MHz. The VCO frequency is programmed in steps equal to the value of the input reference or crystal frequency. The VCO and output frequency can be programmed using the serial or parallel interface to the configuration logic. The low phase noise characteristics of the 8432-51 make it an ideal clock source for Gigabit Ethernet, Fibre Channel 1 and 2, and InfiniBand applications.
