參數(shù)資料
型號: NC7SP05P5X
廠商: Fairchild Semiconductor
文件頁數(shù): 6/9頁
文件大小: 0K
描述: IC INVERTER SGL ULP OD SC70-5
產(chǎn)品變化通告: Mold Compound Change 12/Dec/2007
標準包裝: 3,000
系列: 7SP
邏輯類型: 逆變器,緩沖器
電路數(shù): 1
輸入數(shù): 1
特點: 開路漏極
電源電壓: 0.9 V ~ 3.6 V
電流 - 靜態(tài)(最大值): 0.9µA
輸出電流高,低: -,2.6mA
邏輯電平 - 低: 0.7 V ~ 0.9 V
邏輯電平 - 高: 1.6 V ~ 2.1 V
額定電壓和最大 CL 時的最大傳播延遲: 10ns @ 3V ~ 3.6V,30pF
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
供應(yīng)商設(shè)備封裝: SC-70-5
封裝/外殼: 6-TSSOP(5 引線),SC-88A,SOT-353
包裝: 帶卷 (TR)
ICS8545I
LOW SKEW, 1-TO-4, LVCMOS/LVTTL-TO-LVDS FANOUT BUFFER
IDT / ICS LVDS FANOUT BUFFER
6
ICS8545BGI REV. B MARCH 02, 2009
Additive Phase Jitter
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
have issues. The primary issue relates 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 dependant on the input source and
measurement equipment.
SSB
Phas
e
Noise
dBc/Hz
Offset Frequency (Hz)
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