840004-11中文资料FemtoClock® Crystal-to-LVCMOS/LVTTL Frequency Synthesizer数据手册Renesas规格书

描述 Description

The 840004-11 is a 4 output LVCMOS/LVTTL Synthesizer optimized to generate Ethernet reference clock frequencies and is a member of the family of high performance clock solutions from IDT. Using a 25MHz, 18pF parallel resonant crystal, 125MHz and 62.5MHz can be generated based on one frequency select pin (F_SEL). The 840004-11 uses IDT's 3rd generation low phase noise VCO technology and can achieve 1ps or lower typical random rms phase jitter, easily meeting Ethernet jitter requirements. The 840004-11 is packaged in a small 20-pin TSSOP package.

特性 Features

·Four single-ended LVCMOS/LVTTL outputs 17Ω typical output impedance
·Crystal oscillator interface
·Input frequency range: 22.4MHz to 28MHz
·Output frequency range: 56MHz - 140MHz
·VCO range: 560MHz - 700MHz
·RMS phase jitter at 125MHz (1.875MHz – 20MHz): 0.70ps (typical)Phase Noise:Offset               Noise Power100Hz ............-95.5 dBc/Hz1kHz ..............-123.6 dBc/Hz10kHz.............-132.8 dBc/Hz100kHz ..........-133.4 dBc/Hz
·Full 3.3V output supply mode
·0°C to 70°C ambient operating temperature
·Available in lead-free (RoHS 6) package