843N252-45 Description
The 843N252-45 is a 1 LVPECL and 1 LVCMOS output Synthesizer optimized to generate Ethernet reference clock frequencies. The device uses IDT’s fourth generation FemtoClock ® NG technology for an optimum of high clock frequency and low phase noise performance, bined with a low power consumption and high power supply noise rejection. Using a 25MHz parallel resonant crystal, the following frequencies can be generated:.
843N252-45 Key Features
- Fourth generation FemtoClock® Next Generation (NG) technology
- One differential 3.3V LVPECL output and one LVCMOS/LVTTL
- Crystal oscillator interface designed for a 25MHz parallel resonant
- A 25MHz crystal generates output frequencies of: 156.25MHz and
- VCO frequency: 625MHz
- RMS Phase Jitter @ 156.25MHz, (12kHz
- 20MHz) using a
- RMS Phase Jitter @ 125MHz, (12kHz
- 20MHz) using a 25MHz
- Power supply noise rejection PSNR: -60dB (typical)