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| 型号： | 9DB306BFLF |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟及定时 |
| 英文描述： | 9DB SERIES, PLL BASED CLOCK DRIVER, 6 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO28 |
| 封装： | 5.30 X 10.20 MM, 1.75 MM HEIGHT, ROHS COMPLIANT, MO-150, SSOP-28 |
| 文件页数： | 4/17页 |
| 文件大小： | 268K |
| 代理商： | 9DB306BFLF |
ICS9DB306BL REVISION C AUGUST 13, 2009
12
2009 Integrated Device Technology, Inc.
ICS9DB306 Data Sheet
PCI EXPRESS JITTER ATTENUATOR
3. Calculations and Equations.
The purpose of this section is to derive the power dissipated into the load.
LVPECL output driver circuit and termination are shown in
Figure 6.
To calculate worst case power dissipation into the load, use the following equations which assume a 50
Ω load, and a termination
voltage of V
CCO
- 2V.
For logic high, V
OUT
= V
OH_MAX
= V
CCO_MAX
– 0.9V
(V
CCO_MAX
- V
OH_MAX
) = 0.9V
For logic low, V
OUT
= V
OL_MAX
= V
CCO_MAX
– 1.7V
(V
CCO_MAX
- V
OL_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 = [(V
OH_MAX
– (V
CCO_MAX
- 2V))/R
L
] * (V
CCO_MAX
- V
OH_MAX
) = [(2V - (V
CCO_MAX
- V
OH_MAX
))/R
L
] * (V
CCO_MAX
- V
OH_MAX
) =
[(2V - 0.9V)/50
Ω] * 0.9V = 19.8mW
Pd_L = [(V
OL_MAX
– (V
CCO_MAX
- 2V))/R
L
] * (V
CCO_MAX
- V
OL_MAX
) = [(2V - (V
CCO_MAX
- V
OL_MAX
))/R
L
] * (V
CCO_MAX
- V
OL_MAX
) =
[(2V - 1.7V)/50
Ω] * 1.7V = 10.2mW
Total Power Dissipation per output pair = Pd_H + Pd_L = 30mW
FIGURE 6. LVPECL DRIVER CIRCUIT AND TERMINATION
Q1
V
OUT
V
CCO
RL
50
V
CCO - 2V
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相关代理商/技术参数 |
参数描述 |
|---|---|
| 9DB306BFT | 制造商:Integrated Device Technology Inc 功能描述:9DB306BFT - Tape and Reel |
| 9DB306BL | 制造商:Integrated Device Technology Inc 功能描述:PCI EXPRESS, JITTER ATTENUATOR. TSSOP28 - Rail/Tube |
| 9DB306BLI | 制造商:Integrated Device Technology Inc 功能描述:ZERO DLY PLL CLOCK BFFR SGL 28TSSOP - Rail/Tube |
| 9DB306BLILF | 功能描述:IC JITTER ATTENUATOR 28-TSSOP 制造商:idt, integrated device technology inc 系列:- 包装:管件 零件状态:过期 PLL:是 主要用途:PCI Express（PCIe） 输入:HCSL，LVDS，LVHSTL，LVPECL，SSTL 输出:LVPECL 电路数:1 比率 - 输入:输出:1：6 差分 - 输入:输出:是/是 频率 - 最大值:140MHz 电压 - 电源:2.97 V ~ 3.63 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:28-TSSOP（0.173"，4.40mm 宽） 供应商器件封装:28-TSSOP 标准包装:50 |
| 9DB306BLILFT | 功能描述:IC JITTER ATTENUATOR 28-TSSOP 制造商:idt, integrated device technology inc 系列:- 包装:带卷（TR） 零件状态:过期 PLL:是 主要用途:PCI Express（PCIe） 输入:HCSL，LVDS，LVHSTL，LVPECL，SSTL 输出:LVPECL 电路数:1 比率 - 输入:输出:1：6 差分 - 输入:输出:是/是 频率 - 最大值:140MHz 电压 - 电源:2.97 V ~ 3.63 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:28-TSSOP（0.173"，4.40mm 宽） 供应商器件封装:28-TSSOP 标准包装:1,000 |
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