- 您现在的位置：买卖IC网 > PDF目录9183 > ICS841608AKILF (IDT, Integrated Device Technology Inc)IC CLOCK GENERATOR 32VFQFPN PDF资料下载
参数资料
| 型号： | ICS841608AKILF |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 4/17页 |
| 文件大小： | 0K |
| 描述： | IC CLOCK GENERATOR 32VFQFPN |
| 产品培训模块： | PCI-Express |
| 标准包装： | 490 |
| 系列： | HiPerClockS™, FemtoClock™ |
| 类型： | 时钟发生器，扇出配送，多路复用器 |
| PLL： | 带旁路 |
| 输入： | LVCMOS，LVTTL，晶体 |
| 输出： | HCSL |
| 电路数： | 1 |
| 比率 - 输入:输出： | 2:8 |
| 差分 - 输入:输出： | 无/是 |
| 频率 - 最大： | 125MHz |
| 除法器/乘法器： | 是/无 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 供应商设备封装： | 32-VFQFPN 裸露焊盘（4x4） |
| 包装： | 托盘 |
| 其它名称： | 841608AKILF ICS841608AKILF-ND |
IDT / ICS HCSL CLOCK GENERATOR
12
ICS841608AKI REV. A JUNE 18, 2008
ICS841608I
FEMTOCLOCKS CRYSTAL-TO-HCSL CLOCK GENERATOR
POWER CONSIDERATIONS
This section provides information on power dissipation and junction temperature for the ICS841608I.
Equations and example calculations are also provided.
1. Power Dissipation.
The total power dissipation for the ICS841608I is the sum of the core power plus the analog power plus the power dissipated in the
load(s). The following is the power dissipation for V
DD
= 3.3V + 5% = 3.465V, which gives worst case results.
NOTE: Please refer to Section 3 for details on calculating power dissipated in the load.
Power (core)
MAX
= V
DD_MAX
* (I
DD_MAX
+ I
DDA_MAX
) = 3.465V * (87mA + 15mA) = 353.43mW
Power (outputs)
MAX
= 44.5mW/Loaded Output pair
If all outputs are loaded, the total power is 8 * 44.5mW = 356mW
Total Power
_MAX
(3.465V, with all outputs switching) = 353.43mW + 356mW =709.43mW
2.
Junction Temperature.
Junction temperature, Tj, is the temperature at the junction of the bond wire and bond pad and directly affects the reliability of the
device. The maximum recommended junction temperature for HiPerClockS
TM devices is 125°C.
The equation for Tj is as follows: Tj =
θ
JA * Pd_total + TA
Tj = Junction Temperature
θ
JA = Junction-to-Ambient Thermal Resistance
Pd_total = Total Device Power Dissipation (example calculation is in Section 1 above)
T
A = Ambient Temperature
In order to calculate junction temperature, the appropriate junction-to-ambient thermal resistance
θ
JA must be used. Assuming no air
flow and a multi-layer board, the appropriate value is 37°C/W per Table 7 below.
Therefore, Tj for an ambient temperature of 85°C with all outputs switching is:
85°C + 0.709W * 37°C/W = 111.2°C. This is well below the limit of 125°C.
This calculation is only an example. Tj will obviously vary depending on the number of loaded outputs, supply voltage, air flow,
and the type of board (single layer or multi-layer).
TABLE 7. THERMAL RESISTANCE
θθθθθ
JA
FOR
32-PIN VFQFN, FORCED CONVECTION
θθθθθ
JA
vs. Air Flow (Meters per Second)
0
1
2.5
Multi-Layer PCB, JEDEC Standard Test Boards
37.0°C/W
32.4°C/W
29.0°C/W
相关PDF资料 |
PDF描述 |
|---|---|
| MAX5420CEUA+T | IC VOLTAGE DIVIDER DGLT 8-UMAX |
| ICS8761CYLF | IC CLK GEN PCI/PCI-X 64-LQFP |
| VI-25V-MW | CONVERTER MOD DC/DC 5.8V 100W |
| X9251US24Z | IC XDCP QUAD 256TAP 50K 24-SOIC |
| V28A12H200BL2 | CONVERTER MOD DC/DC 12V 200W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS841608AKILFT | 功能描述:IC CLOCK GENERATOR 32-VFQFPN RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™, FemtoClock™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
| ICS841608AKIT | 功能描述:IC CLOCK GENERATOR 32-VFQFPN RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™, FemtoClock™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
| ICS841608I | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:FEMTOCLOCKS CRYSTAL-TO-HCSL CLOCK GENERATOR VCO: 500MHz |
| ICS841654AGI | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:FEMTOCLOCKS? CRYSTAL-TO-HCSL CLOCK GENERATOR |
| ICS841654AGILF | 功能描述:IC CLOCK GENERATOR 28-TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™, FemtoClock™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
发布紧急采购，3分钟左右您将得到回复。