CDCE421A
www.ti.com. SCAS873 – APRIL 2009 Fully-Integrated, Wide Range, Low-Jitter
Crystal Oscillator Clock Generator FEATURES 1 Single Supply at 3.3 V for LVPECL or LVDS
Operation High-Performance Clock Multiplier,
Incorporating Crystal Oscillator Circuitry with
Integrated Frequency Synthesizer Low Output Jitter: 380 fs RMS typical
(from 10 kHz to 20 MHz) Low Phase Noise at High Frequency (708-MHz
LVPECL):
– Typically –109 dBc/Hz at 10 kHz and
–146dBc/Hz at 10 MHz from the carrier Supports Crystal or LVCMOS Input
Frequencies from 27.35 MHz to 38.33 MHz Output Frequency Ranges from 10.9 MHz to
766.7 MHz and from 875.2 MHz to 1175 MHz Low-Voltage Differential Signaling (LVDS)
Output, 100-Ω Differential Off-Chip
Termination, 10.9-MHz to 400-MHz Frequency
Range Differential Low-Voltage Positive Emitter
Coupled Logic (LVPECL) Outputs, 10.9-MHz to
1.175-GHz Frequency Range
2 CE Two Fully-Integrated Voltage-Controlled
Oscillators (VCO) Support Wide Output
Frequency Range
Fully Integrated Programmable Loop Filter
Typical Power Consumption at 3.3 V:
– 274 mW in LVDS mode …
