IDT / ICS HSTL FREQUENCY SYNTHESIZER
參數(shù)資料
型號(hào): CS5550-ISZ
廠商: Cirrus Logic Inc
文件頁數(shù): 2/15頁
文件大?。?/td> 0K
描述: IC ADC 2CH LOW-COST 24SSOP
標(biāo)準(zhǔn)包裝: 59
位數(shù): 2
采樣率(每秒): 4k
數(shù)據(jù)接口: 串行
轉(zhuǎn)換器數(shù)目: 2
功率耗散(最大): 30mW
電壓電源: 模擬和數(shù)字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-SSOP(0.209",5.30mm 寬)
供應(yīng)商設(shè)備封裝: 24-SSOP
包裝: 管件
輸入數(shù)目和類型: 2 個(gè)差分,雙極
產(chǎn)品目錄頁面: 755 (CN2011-ZH PDF)
其它名稱: 598-1119-5
IDT / ICS HSTL FREQUENCY SYNTHESIZER
10
ICS8421002I REV B MARCH 02, 2009
ICS8421002I
FEMTOCLOCKS CRYSTAL-TO-HSTL FREQUENCY SYNTHESIZER
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 3.
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 = (V
OH_MAX
/R
L
) * (V
DD_MAX
- V
OH_MAX
)
Pd_L = (V
OL_MAX
/R
L
) * (V
DD_MAX
- V
OL_MAX
)
Pd_H = (1V/50
) * (2V - 1V) = 20mW
Pd_L = (0.4V/50
) * (2V - 0.4V) = 12.8mW
Total Power Dissipation per output pair = Pd_H + Pd_L = 32.8mW
FIGURE 3. HSTL DRIVER CIRCUIT AND TERMINATION
V
DDO
V
OUT
RL
50
Q1
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