840004-11中文資料瑞薩數(shù)據(jù)手冊PDF規(guī)格書

General 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.

Features

? Four single-ended LVCMOS/LVTTL outputs

17? 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 Power

100Hz -95.5 dBc/Hz

1kHz -123.6 dBc/Hz

10kHz -132.8 dBc/Hz

100kHz -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