- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄299802 > QS90LD9M-120.000MHZ (Q-TECH CORP) CRYSTAL OSCILLATOR, CLOCK, 120 MHz, LVHCMOS OUTPUT PDF資料下載
參數(shù)資料
| 型號(hào)： | QS90LD9M-120.000MHZ |
| 廠商： | Q-TECH CORP |
| 元件分類： | XO, clock |
| 英文描述： | CRYSTAL OSCILLATOR, CLOCK, 120 MHz, LVHCMOS OUTPUT |
| 封裝： | ROHS COMPLIANT, HERMETIC SEALED, MINIATURE, CERAMIC, SMD, 4 PIN |
| 文件頁(yè)數(shù)： | 6/6頁(yè) |
| 文件大小： | 315K |
| 代理商： | QS90LD9M-120.000MHZ |
6
Q-TECH Corporation - 10150 W. Jefferson Boulevard, Culver City 90232 - Tel: 310-836-7900 - Fax: 310-836-2157 - www.q-tech.com
QT90 SERIES
HIGH-RELIABILITY MINIATURE CLOCK OSCILLATORS
1.8 to 5.0Vdc
-
15kHz to 160MHz
Q-TECH
CORPORATION
QT90 (Revision H, January 2011) (ECO #10088)
Phase noise is measured in the frequency domain, and is expressed as a ratio of signal power to noise power measured in a 1Hz
bandwidth at an offset frequency from the carrier, e.g. 10Hz, 100Hz, 1kHz, 10kHz, 100kHz, etc. Phase noise measurement is made
with an Agilent E5052A Signal Source Analyzer (SSA) with built-in outstanding low-noise DC power supply source. The DC source
is floated from the ground and isolated from external noise to ensure accuracy and repeatability.
In order to determine the total noise power over a certain frequency range (bandwidth), the time domain must be analyzed in the
frequency domain, and then reconstructed in the time domain into an rms value with the unwanted frequencies excluded. This may be
done by converting L(f) back to Sφ(f) over the bandwidth of interest, integrating and performing some calculations.
The value of RMS jitter over the bandwidth of interest, e.g. 10kHz to 20MHz, 10Hz to 20MHz, represents 1 standard deviation of
phase jitter contributed by the noise in that defined bandwidth.
Figure below shows a typical Phase Noise/Phase jitter of a QT90L, 3.3Vdc, 20MHz clock at offset frequencies 10Hz to 5MHz, and
phase jitter integrated over the bandwidth of 12kHz to 1MHz.
Phase Noise and Phase Jitter Integration
Period Jitter
As data rates increase, effects of jitter become critical with its
budgets tighter. Jitter is the deviation of a timing event of a
signal from its ideal position. Jitter is complex and is
composed of both random and deterministic jitter
components. Random jitter (RJ) is theoretically unbounded
and Gaussian in distribution. Deterministic jitter (DJ) is
bounded and does not follow any predictable distribution.
DJ is also referred to as systematic jitter. A technique to
measure period jitter (RMS) one standard deviation (1σ) and
peak-to-peak jitter in time domain is to use a high sampling
rate (>8G samples/s) digitizing oscilloscope. Figure shows
an example of peak-to-peak jitter and RMS jitter (1σ) of a
QT90L-100MHz, at 3.3Vdc.
RMS jitter (1σ): 7.7ps
Peak-to-peak jitter: 56ps
Symbol
Definition
∫
L(f)
Integrated single side band phase noise (dBc)
Sφ (f)=(180/Π)x
√2 ∫
L(f)df
Spectral density of phase modulation, also known as RMS phase error (in degrees)
RMS jitter = Sφ (f)/(fosc.360°)
Jitter(in seconds) due to phase noise. Note Sφ (f) in degrees.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| QS90LD9M-29.000MHZ | CRYSTAL OSCILLATOR, CLOCK, 29 MHz, LVHCMOS OUTPUT |
| QSB363C.ZR | PHOTO TRANSISTOR DETECTOR |
| QSB363C.GR | PHOTO TRANSISTOR DETECTOR |
| QSD723_0163 | PHOTO TRANSISTOR DETECTOR |
| QSE123 | PHOTO TRANSISTOR DETECTOR |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| QS912A Converter Shelf | 功能描述:線性和開關(guān)式電源 BDFB Fed w/AlarmCard 4x-48V 48Ain lug RoHS:否 制造商:TDK-Lambda 產(chǎn)品:Switching Supplies 開放式框架/封閉式:Enclosed 輸出功率額定值:800 W 輸入電壓:85 VAC to 265 VAC 輸出端數(shù)量:1 輸出電壓（通道 1）:20 V 輸出電流（通道 1）:40 A 商用/醫(yī)用: 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:Rack 長(zhǎng)度: 寬度: 高度: |
| QS982A Converter Card | 功能描述:線性和開關(guān)式電源 -48V-+/-190V 2x100VA Convert/Limiter card RoHS:否 制造商:TDK-Lambda 產(chǎn)品:Switching Supplies 開放式框架/封閉式:Enclosed 輸出功率額定值:800 W 輸入電壓:85 VAC to 265 VAC 輸出端數(shù)量:1 輸出電壓（通道 1）:20 V 輸出電流（通道 1）:40 A 商用/醫(yī)用: 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:Rack 長(zhǎng)度: 寬度: 高度: |
| QSA | 制造商:ITT 制造商全稱:ITT Industries 功能描述:Excellent tactile feel, SMT switch adapted for low current, Only actuate 1 direction at a time |
| QSA156 | 功能描述:光IC傳感器 Optologic IC Buffer Totem Pole RoHS:否 制造商:Honeywell 產(chǎn)品:Photo IC 通道數(shù)量:1 輸出類型:10 KOhms Pull-up, Inverter 工作電源電壓:4.5 V to 16 V 電源電流:12 mA to 15 mA 高電平輸出電流: 上升時(shí)間:60 ns 下降時(shí)間:15 ns 傳播延遲時(shí)間:5 us 最大工作溫度:+ 100 C 最小工作溫度:- 40 C 標(biāo)準(zhǔn)包裝數(shù)量: 封裝: |
| QSA157 | 功能描述:光IC傳感器 Optologic Sensor Inverter Totem Pole RoHS:否 制造商:Honeywell 產(chǎn)品:Photo IC 通道數(shù)量:1 輸出類型:10 KOhms Pull-up, Inverter 工作電源電壓:4.5 V to 16 V 電源電流:12 mA to 15 mA 高電平輸出電流: 上升時(shí)間:60 ns 下降時(shí)間:15 ns 傳播延遲時(shí)間:5 us 最大工作溫度:+ 100 C 最小工作溫度:- 40 C 標(biāo)準(zhǔn)包裝數(shù)量: 封裝: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。