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參數(shù)資料
| 型號(hào)： | 843004AGI-01T |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時(shí)鐘產(chǎn)生/分配 |
| 英文描述： | 170 MHz, OTHER CLOCK GENERATOR, PDSO24 |
| 封裝： | 4.40 X 7.80 MM, 0.925 MM HEIGHT, MO-153, TSSOP-24 |
| 文件頁數(shù)： | 7/19頁 |
| 文件大?。?/td> | 1414K |
| 代理商： | 843004AGI-01T |
ICS843004AGI-01 REVISION B MARCH 24, 2011
15
2011Integrated Device Technology, Inc.
ICS843004I-01 Data Sheet
FEMTOCLOCK CRYSTAL-TO-3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
3. Calculations and Equations.
The purpose of this section is to calculate the power dissipation for the LVPECL output pair.
LVPECL output driver circuit and termination are shown in Figure 7.
Figure 7. LVPECL Driver Circuit and Termination
To calculate worst case power dissipation into the load, use the following equations which assume a 50 load, and a termination voltage of
VCCO – 2V.
For logic high, VOUT = VOH_MAX = VCCO_MAX – 0.9V
(VCCO_MAX – VOH_MAX) = 0.9V
For logic low, VOUT = VOL_MAX = VCCO_MAX – 1.7V
(VCCO_MAX – VOL_MAX) = 1.7V
Pd_H is power dissipation when the output drives high.
Pd_L is the power dissipation when the output drives low.
Pd_H = [(VOH_MAX – (VCCO_MAX – 2V))/RL] * (VCCO_MAX – VOH_MAX) = [(2V – (VCCO_MAX – VOH_MAX))/RL] * (VCCO_MAX – VOH_MAX) =
[(2V – 0.9V)/50
] * 0.9V = 19.8mW
Pd_L = [(VOL_MAX – (VCCO_MAX – 2V))/RL] * (VCCO_MAX – VOL_MAX) = [(2V – (VCCO_MAX – VOL_MAX))/RL] * (VCCO_MAX – VOL_MAX) =
[(2V – 1.7V)/50
] * 1.7V = 10.2mW
Total Power Dissipation per output pair = Pd_H + Pd_L = 30mW
V
OUT
V
CCO
V
CCO - 2V
Q1
RL
50
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 843004AGI-02LF | 制造商:Integrated Device Technology Inc 功能描述:Frequency Synthesizer 制造商:Integrated Device Technology Inc 功能描述:24 E-TSSOP (GREEN) - Bulk |
| 843004AGI-02LFT | 制造商:Integrated Device Technology Inc 功能描述:PLL Frequency Synthesizer Single 24-Pin TSSOP T/R 制造商:Integrated Device Technology Inc 功能描述:24 E-TSSOP (GREEN) - Tape and Reel |
| 843004AGI-04 | 制造商:Integrated Device Technology Inc 功能描述:843004AGI-04 - Rail/Tube |
| 843004AGI-04LF | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| 843004AGI-04LFT | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
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