- 您現在的位置：買賣IC網 > PDF目錄9193 > ICS843021AGLF (IDT, Integrated Device Technology Inc)IC CLK GEN 1GIG LVPECL 8-TSSOP PDF資料下載
參數資料
| 型號： | ICS843021AGLF |
| 廠商： | IDT, Integrated Device Technology Inc |
| 文件頁數： | 2/15頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CLK GEN 1GIG LVPECL 8-TSSOP |
| 特色產品： | Gigabit Ethernet Clock Synthesizer |
| 標準包裝： | 96 |
| 系列： | HiPerClockS™, FemtoClock™ |
| 類型： | 時鐘/頻率合成器，時鐘發(fā)生器 |
| PLL： | 是 |
| 輸入： | 晶體 |
| 輸出： | LVPECL |
| 電路數： | 1 |
| 比率 - 輸入:輸出： | 1:1 |
| 差分 - 輸入:輸出： | 無/是 |
| 頻率 - 最大： | 140MHz |
| 除法器/乘法器： | 是/無 |
| 電源電壓： | 2.97 V ~ 3.63 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP（0.173"，4.40mm 寬） |
| 供應商設備封裝： | 8-TSSOP |
| 包裝： | 管件 |
| 產品目錄頁面： | 1250 (CN2011-ZH PDF) |
| 其它名稱： | 800-1133 800-1133-5 800-1133-ND 843021AGLF |
ICS843021AG REVISION D OCTOBER 12, 2010
10
2010 Integrated Device Technology, Inc.
ICS843021 Data Sheet
FEMTOCLOCK CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR
Power Considerations
This section provides information on power dissipation and junction temperature for the ICS843021.
Equations and example calculations are also provided.
1.
Power Dissipation.
The total power dissipation for the ICS843021 is the sum of the core power plus the power dissipated in the load(s).
The following is the power dissipation for VCC= 3.3V + 10% = 3.63V, which gives worst case results.
NOTE: Please refer to Section 3 for details on calculating power dissipated in the load.
Power (core)MAX = VCC_MAX * IEE_MAX = 3.63V * 85mA = 308.6mW
Power (outputs)MAX = 30mW/Loaded Output pair
Total Power_MAX (3.63V, with all outputs switching) = 308.6mW + 30mW = 338.6mW
2. Junction Temperature.
Junction temperature, Tj, is the temperature at the junction of the bond wire and bond pad directly affects the reliability of the device. The
maximum recommended junction temperature is 125°C. Limiting the internal transistor junction temperature, Tj, to 125°C ensures that the bond
wire and bond pad temperature remains below 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)
TA = 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 90.5°C/W per Table 8 below.
Therefore, Tj for an ambient temperature of 70°C with all outputs switching is:
70°C + 0.339W * 90.5°C/W = 100.7°C. This is 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 (multi-layer).
Table 8. Thermal Resitance θJA for 8 Lead TSSOP, Forced Convection
θ
JA vs. Air Flow
Meters per Second
01
2.5
Multi-Layer PCB, JEDEC Standard Test Boards
101.7°C/W
90.5°C/W
89.8°C/W
相關PDF資料 |
PDF描述 |
|---|---|
| X9400YV24IZ | IC XDCP QUAD 64TAP 2.5K 24-TSSOP |
| IDT74FCT257DTSOG | IC MUX QUAD 2INPUT 3ST 16-SOIC |
| X9409WV24IZ | IC XDCP QUAD 64-TAP 10K 24-TSSOP |
| IDT74FCT257DTQG | IC MUX QUAD 2INPUT 3ST 16-QSOP |
| ICS527R-01ILF | IC CLK SLICER ZDB CONFIG 28-SSOP |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ICS843021AGLFT | 功能描述:IC CLK GENERATOR LVPECL 8-TSSOP 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™, FemtoClock™ 標準包裝: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:- 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 供應商設備封裝:56-VFQFP-EP（8x8） 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT |
| ICS843021AGT | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V LVPECL CLOCK GENERATOR |
| ICS843021I-01 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO-3.3V, 2.5V 125MHZ LVPECL CLOCK GENERATOR |
| ICS843022 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO- 3.3V LVPECL CLOCK GENERATOR |
| ICS843022AG | 制造商:INT_DEV_TECH 功能描述: |
發(fā)布緊急采購，3分鐘左右您將得到回復。