參數(shù)資料
型號: ICS842023BGLFT
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 3/15頁
文件大小: 0K
描述: IC CLK GEN ETHERNET 25MHZ 8TSSOP
標(biāo)準(zhǔn)包裝: 2,500
系列: HiPerClockS™, FemtoClock™
類型: 時鐘/頻率發(fā)生器
PLL:
主要目的: 以太網(wǎng)
輸入: 晶體
輸出: HSTL
電路數(shù): 1
比率 - 輸入:輸出: 1:1
差分 - 輸入:輸出: 無/是
頻率 - 最大: 340MHz
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-TSSOP,8-MSOP(0.118",3.00mm 寬)
供應(yīng)商設(shè)備封裝: 8-TSSOP
包裝: 帶卷 (TR)
ICS842023
FEMTOCLOCKCRYSTAL-TO-HSTL CLOCK GENERATOR
IDT / ICS HSTL CLOCK GENERATOR
11
ICS842023BG REV. A NOVEMBER 2, 2012
3. Calculations and Equations.
The purpose of this section is to derive the power dissipated into the load.
HSTL output driver circuit and termination are shown in Figure 6.
Figure 6. HSTL Driver Circuit and Termination
To calculate worst case power dissipation into the load, use the following equations which assume a 50 load.
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 /RL) * (VDD_MAX - VOH_MAX)
Pd_L = (VOL_MAX /RL) * (VDD_MAX - VOL_MAX)
Pd_H = (1.8V/50
) * (3.465 - 1.8V) = 59.94mW
Pd_L = (0.6V/50
) * (3.465 - 0.6V) = 34.38mW
Total Power Dissipation per output pair = Pd_H + Pd_L = 94.32mW
V
OUT
V
DD
Q1
RL
50
Ω
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