- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄208948 > 873996AYLF (INTEGRATED DEVICE TECHNOLOGY INC) 873996 SERIES, PLL BASED CLOCK DRIVER, 6 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48 PDF資料下載
參數(shù)資料
| 型號： | 873996AYLF |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時鐘及定時 |
| 英文描述： | 873996 SERIES, PLL BASED CLOCK DRIVER, 6 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48 |
| 封裝： | 7 X 7 MM, 1 MM HEIGHT, ROHS COMPLIANT, MS-026ABC-HD, TQFP-48 |
| 文件頁數(shù)： | 7/21頁 |
| 文件大?。?/td> | 352K |
| 代理商： | 873996AYLF |
IDT / ICS 3.3V LVPECL ZERO DELAY/MULTIPLIER/DIVIDER
15
ICS873996AY REV. A FEBRUARY 19, 2008
ICS873996
DIFFERENTIAL-TO-3.3V LVPECL ZERO DELAY/MULTIPLIER/DIVIDER
θθθθθ
JA
by Velocity (Meters per Second)
0
1
2.5
Multi-Layer PCB, JEDEC Standard Test Boards
31.8°C/W
25.8°C/W
24.2°C/W
TABLE 6. THERMAL RESISTANCE
θθθθθ
JA
FOR
48-PIN TQFP, E-PAD FORCED CONVECTION
POWER CONSIDERATIONS
This section provides information on power dissipation and junction temperature for the ICS873996.
Equations and example calculations are also provided.
1. Power Dissipation.
The total power dissipation for the ICS873996 is the sum of the core power plus the power dissipated in the load(s).
The following is the power dissipation for V
CC
= 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
CC_MAX
* I
EE_MAX
= 3.465V * 300mA = 1039.5mW
Power (outputs)
MAX
= 30mW/Loaded Output pair
If all outputs are loaded, the total power is 6 * 30mW = 180mW
Total Power
_MAX
(3.465V, with all outputs switching) = 1039.5mW + 180mW = 1219.56mW
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 a
moderate air flow of 1 meter per second and a multi-layer board, the appropriate value is 25.8°C/W per Table 6 below.
Therefore, Tj for an ambient temperature of 70°C with all outputs switching is:
70°C + 1.220W * 25.8°C/W = 101.5°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).
相關PDF資料 |
PDF描述 |
|---|---|
| 873034AGLFT | 873034 SERIES, LOW SKEW CLOCK DRIVER, 3 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO16 |
| 8741004AGLF | 8741004 SERIES, PLL BASED CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO24 |
| 800-033-BDHL8ZNU6-7PX-72 | INTERCONNECTION DEVICE |
| 800-033-CAKL2ZNU6-7NX-72 | INTERCONNECTION DEVICE |
| 800-033-CAKL2ZNU7-10NY-72 | INTERCONNECTION DEVICE |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 873996AYLFT | 功能描述:時鐘發(fā)生器及支持產品 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-56 |
| 873996AYT | 制造商:Integrated Device Technology Inc 功能描述:Zero Delay PLL Clock Multiplier Single 48-Pin TQFP EP T/R 制造商:Integrated Device Technology Inc 功能描述:873996AYT - Tape and Reel |
| 873D | 制造商:Datak Corporation 功能描述: |
| 873DB | 制造商:Datak Corporation 功能描述:Conn TNC M 50Ohm Crimp ST Cable Mount Nickel Bulk |
| 873DPO-G1 | 制造商:Edwards Signaling & Security Systems 功能描述:HORN 24VDC DOUBLE PROJECTOR |
發(fā)布緊急采購，3分鐘左右您將得到回復。