參數(shù)資料
型號: ICS85311AMLFT
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 12/16頁
文件大?。?/td> 0K
描述: IC CLOCK BUFFER 1:2 1GHZ 8-SOIC
標準包裝: 2,500
系列: HiPerClockS™
類型: 扇出緩沖器(分配)
電路數(shù): 1
比率 - 輸入:輸出: 1:2
差分 - 輸入:輸出: 是/是
輸入: HCSL,LVDS,LVHSTL,LVPECL,SSTL
輸出: ECL,LVPECL
頻率 - 最大: 1GHz
電源電壓: 2.375 V ~ 3.465 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應商設備封裝: 8-SOIC
包裝: 帶卷 (TR)
其它名稱: 85311AMLFT
ICS85311
LOW SKEW, 1-TO-2, DIFFERENTIAL-TO-LVPECL/ECLFANOUT BUFFER
IDT / ICS LVPECL/ECL FANOUT BUFFER
5
ICS85311AM REV. D OCTOBER 22, 2008
Additive Phase Jitter (3.3V)
The spectral purity in a band at a specific offset from the
fundamental compared to the power of the fundamental is called
the dBc Phase Noise. This value is normally expressed using a
Phase noise plot and is most often the specified plot in many
applications. Phase noise is defined as the ratio of the noise power
present in a 1Hz band at a specified offset from the fundamental
frequency to the power value of the fundamental. This ratio is
expressed in decibels (dBm) or a ratio of the power in the 1Hz band
to the power in the fundamental. When the required offset is
specified, the phase noise is called a dBc value, which simply
means dBm at a specified offset from the fundamental. By
investigating jitter in the frequency domain, we get a better
understanding of its effects on the desired application over the
entire time record of the signal. It is mathematically possible to
calculate an expected bit error rate given a phase noise plot.
As with most timing specifications, phase noise measurements
has issues relating to the limitations of the equipment. Often the
noise floor of the equipment is higher than the noise floor of the
device. This is illustrated above. The device meets the noise floor
of what is shown, but can actually be lower. The phase noise is
dependent on the input source and measurement equipment.
Offset Frequency (Hz)
SSB
Phas
e
Noise
dBc/Hz
Additive Phase Jitter @ 156.25MHz
12kHz to 20MHz = 0.14ps (typical)
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