- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄223059 > 843002AKI-40LF (INTEGRATED DEVICE TECHNOLOGY INC) 175 MHz, OTHER CLOCK GENERATOR, QCC32 PDF資料下載
參數(shù)資料
| 型號(hào)： | 843002AKI-40LF |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | XO, clock |
| 英文描述： | 175 MHz, OTHER CLOCK GENERATOR, QCC32 |
| 封裝： | 3 X 3 MM, 0.95 MM HEIGHT, ROHS COMPLIANT, MO-220VHHD, VFQFN-32 |
| 文件頁數(shù)： | 10/24頁 |
| 文件大?。?/td> | 742K |
| 代理商： | 843002AKI-40LF |
ICS843002I-40
175MHZ, FEMTOCLOCKS VCXO BASED SONET/SDH JITTER ATTENUATOR
IDT / ICS VCXO BASED SONET/SDH JITTER ATTENUATOR
18
ICS843002AKI-40 REV. B APRIL 27, 2009
Power Considerations
This section provides information on power dissipation and junction temperature for the ICS843002I-40.
Equations and example calculations are also provided.
1.
Power Dissipation.
The total power dissipation for the ICS843002I-40 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 + 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 = VCC_MAX * IEE_MAX = 3.465V * 210mA = 727.65mW
Power (outputs)MAX = 30mW/Loaded Output pair
If all outputs are loaded, the total power is 2 * 30mW = 60mW
Total Power_MAX (3.3V, with all outputs switching) = 727.65mW + 60mW = 787.65mW
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 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)
TA = 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 6 below.
Therefore, Tj for an ambient temperature of 85°C with all outputs switching is:
85°C + 0.788W * 37°C/W = 114.2°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 (single layer or multi-layer).
Table 6. Thermal Resistance θJA for 48 Lead TQFP, Forced Convection
θ
JA by Velocity
Meters per Second
01
2.5
Multi-Layer PCB, JEDEC Standard Test Boards
37.0°C/W
32.4°C/W
29.0°C/W
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 84364-5 | 22 CONTACT(S), FEMALE, STRAIGHT TWO PART BOARD CONNECTOR, SURFACE MOUNT, RECEPTACLE |
| 84364-7 | 12 CONTACT(S), FEMALE, STRAIGHT TWO PART BOARD CONNECTOR, SURFACE MOUNT, RECEPTACLE |
| 84364-8 | 12 CONTACT(S), FEMALE, STRAIGHT TWO PART BOARD CONNECTOR, SURFACE MOUNT, RECEPTACLE |
| 84364-9 | 34 CONTACT(S), FEMALE, STRAIGHT TWO PART BOARD CONNECTOR, SURFACE MOUNT, RECEPTACLE |
| 844256BGT | 622.08 MHz, OTHER CLOCK GENERATOR, PDSO24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 843002AKI-40LFT | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| 843002AKI-40T | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:175MHZ, FEMTOCLOCKTM VCXO BASED SONET/SDH JITTER ATTENUATOR |
| 843002AKI-41 | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:700MHZ, FEMTOCLOCKTM VCXO BASED SONET/SDH JITTER ATTENUATOR |
| 843002AKI-41LF | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| 843002AKI-41LFT | 制造商:Integrated Device Technology Inc 功能描述:PLL Clock Generator Dual 32-Pin VFQFPN EP T/R 制造商:Integrated Device Technology Inc 功能描述:PLL CLOCK GEN DUAL 32PIN VFQFPN - Tape and Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。