8V19N472
Description
The 8V19N472 is a fully integrated Femto Clock NG Jitter Attenuator and Clock Synthesizer designed as a high-performance clock solution for conditioning and frequency/phase management of wireless base station radio equipment boards. The device is optimized to deliver excellent phase noise performance as required in GSM, WCDMA, LTE, and LTE-A radio board implementations.
A two-stage PLL architecture supports both jitter attenuation and frequency multiplication. The first stage PLL is the jitter attenuator and uses an external VCXO for best possible phase noise characteristics. The second stage PLL locks on the VCXO-PLL output signal and synthesizes the target frequency. This PLL has two VCO circuits at 2949.12MHz and 2400- 2500MHz, respectively, for enhanced frequency flexibility.
The device generates the output clock signals from the selected VCO by frequency division. Five independent frequency dividers are available, four support integer-divider ratios and one integer as...
