FEMTOCLOCK
參數(shù)資料
型號: ICS841664AGILFT
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 7/19頁
文件大?。?/td> 0K
描述: IC CLOCK GENERATOR 28-TSSOP
標準包裝: 1,000
系列: HiPerClockS™, FemtoClock™
類型: 時鐘發(fā)生器,扇出配送,多路復(fù)用器
PLL: 帶旁路
輸入: LVCMOS,LVTTL,晶體
輸出: HCSL,LVCMOS,LVTTL
電路數(shù): 1
比率 - 輸入:輸出: 2:5
差分 - 輸入:輸出: 無/是
頻率 - 最大: 156.25MHz
除法器/乘法器: 是/無
電源電壓: 3.135 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-TSSOP(0.240",6.10mm 寬)
供應(yīng)商設(shè)備封裝: 28-TSSOP
包裝: 帶卷 (TR)
其它名稱: 841664AGILFT
ICS841664AGI REVISION A JULY 15, 2013
15
2013 Integrated Device Technology, Inc.
ICS841664I Data Sheet
FEMTOCLOCK CRYSTAL-TO-HCSL CLOCK GENERATOR
3. Calculations and Equations.
The purpose of this section is to calculate power dissipation on the IC per HCSL output pair.
HCSL output driver circuit and termination are shown in Figure 4.
Figure 4. HCSL Driver Circuit and Termination
HCSL is a current steering output which sources a maximum of 17mA of current per output. To calculate worst case on-chip power dissipation,
use the following equations which assume a 50
load to ground.
The highest power dissipation occurs when VDD_MAX.
Power
= (VDD_MAX – VOUT) * IOUT
since VOUT = IOUT * RL
Power
= (VDD_MAX – IOUT * RL) * IOUT
= (3.465V – 17mA * 50
) * 17mA
Total Power Dissipation per output pair = 44.5mW
VDD
VOUT
RL
50
IC
IOUT = 17mA
RREF =
475
± 1%
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