- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄67691 > ICS8432BK-51LFT (INTEGRATED DEVICE TECHNOLOGY INC) 700 MHz, OTHER CLOCK GENERATOR, QCC32 PDF資料下載
參數(shù)資料
| 型號： | ICS8432BK-51LFT |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時鐘產(chǎn)生/分配 |
| 英文描述： | 700 MHz, OTHER CLOCK GENERATOR, QCC32 |
| 封裝： | 5 X 5 MM, 0.95 MM HEIGHT, ROHS COMPLIANT, MO-220, VFQFN-32 |
| 文件頁數(shù)： | 5/20頁 |
| 文件大?。?/td> | 316K |
| 代理商： | ICS8432BK-51LFT |
IDT / ICS 3.3V LVPECL FREQUENCY SYNTHESIZER
13
ICS8432BY-51 REV. E APRIL 10, 2007
ICS8432-51
700MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER
POWER CONSIDERATIONS
This section provides information on power dissipation and junction temperature for the ICS8432-51.
Equations and example calculations are also provided.
1. Power Dissipation.
The total power dissipation for the ICS8432-51 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 * 135mA = 467.8mW
Power (outputs)
MAX
= 30mW/Loaded Output pair
If all outputs are loaded, the total power is 2 * 30mW = 60mW
Total Power
_MAX
(3.465V, with all outputs switching) = 467.8mW + 60mW = 527.8mW
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 200 linear feet per minute and a multi-layer board, the appropriate value is 42.1°C/W per Table 10A below.
Therefore, Tj for an ambient temperature of 70°C with all outputs switching is:
70°C + 0.528W * 42.1°C/W = 92.2°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).
θθθθθ
JA
by Velocity (Linear Feet per Minute)
0
200
500
Single-Layer PCB, JEDEC Standard Test Boards
67.8°C/W
55.9°C/W
50.1°C/W
Multi-Layer PCB, JEDEC Standard Test Boards
47.9°C/W
42.1°C/W
39.4°C/W
NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.
TABLE 10A. THERMAL RESISTANCE
θθθθθ
JA
FOR
32-PIN LQFP, FORCED CONVECTION
θθθθθ
JA
by Velocity (Linear Feet per Minute)
TABLE 10B. THERMAL RESISTANCE
θθθθθ
JA
FOR
32-PIN VFQFN, FORCED CONVECTION
0
Multi-Layer PCB, JEDEC Standard Test Boards
34.8°C/W
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICS8432CY-111LF | 8432 SERIES, PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| ICS8432CY-111 | 8432 SERIES, PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| ICS8432CYI-01T | 700 MHz, OTHER CLOCK GENERATOR, PQFP32 |
| ICS8432DY-101LFT | 8432 SERIES, PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
| ICS8432DY-101T | 8432 SERIES, PLL BASED CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS8432BK-51T | 制造商:ICS 制造商全稱:ICS 功能描述:700MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS8432BKI-51 | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:700MHZ, CYRSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS8432BKI-51LF | 功能描述:IC FREQ SYNTHESIZER 32VFQFN RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:時鐘/頻率合成器，扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-VFQFP-EP（8x8） 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT |
| ICS8432BKI-51LFT | 功能描述:IC FREQ SYNTHESIZER 32VFQFN RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 時鐘發(fā)生器，PLL，頻率合成器 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:時鐘/頻率合成器，扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-VFQFP-EP（8x8） 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT |
| ICS8432BKI-51T | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:700MHZ, CYRSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。