8V44N4614中文资料FemtoClock® NG Jitter Attenuator and Clock Synthesizer数据手册Renesas规格书

描述 Description

The 8V44N4614 is a FemtoClock® NG Clock Generator. The device has been designed for frequency generation in high-performance systems such wireless base-band boards, for instance to drive the reference clock inputs of processors, PHY, switch and SerDes devices. The device is very flexible in frequency programming. It allows to generate the clock frequencies of 156.25MHz, 125MHz, 100MHz and 25MHz individually at three output banks. One output bank supports configurable LVDS, LVPECL, the other two output banks support LVCMOS output levels. All outputs are synchronized on the incident rising edge, regardless of the selected output frequency. Selective single-ended LVCMOS outputs can be configured to invert the output phase, effectively forming differential LVCMOS output pairs for noise reduction. The PLL reference signal is either a 25MHz, 50MHz, 100MHz or 200MHz differential or single-ended clock.

特性 Features

• Clock generator for wireless base-band systems
• Drives reference clock inputs of processors, PHY, switch andSerDes devices
• FemtoClock® NG technology
• Three low-skew, differential LVDS, LVPECL configurable clockoutputs
• Ten low-skew, LVCMOS/LVTTL clock outputs
• Input: 200MHz, 100MHz, 50MHz, 25MHz single-ended  (LVCMOS) or differential reference clock (LVDS, LVPECL)
• Output clocks support 156.25MHz, 125MHz, 100MHz and 25MHz
• Individual output disable (high-impedance)
• Two sets of output enable configurations
• PLL lock detect output
• Test mode with frequency margining with 19.53125ppm steps(range ±507.8125ppm)
• LVCMOS (1.8V, JESD8-7A) compatible SPI programminginterface
• Cycle-to-cycle jitter: 10ps (typical)
• RMS period jitter: 1.6ps (typical)
• Phase noise (12kHz - 20MHz): 0.40ps (typical)
• 3.3V core and output supply
• -40°C to +85°C ambient operating temperature
• Lead-free (RoHS 6) 48-lead VFQFN packaging