IDT / ICS 2.5V LVPECL FREQUENCY SYNTHESIZ" />
參數(shù)資料
型號: ICS843001AKI-40LFT
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 5/18頁
文件大小: 0K
描述: IC SYNTHESIZER LVPECL 16-VFQFPN
標(biāo)準(zhǔn)包裝: 2,500
系列: HiPerClockS™, FemtoClock™
類型: 頻率合成器
PLL:
輸入: 晶體
輸出: LVCMOS,LVPECL,LVTTL
電路數(shù): 1
比率 - 輸入:輸出: 1:2
差分 - 輸入:輸出: 無/是
頻率 - 最大: 106.25MHz
除法器/乘法器: 無/無
電源電壓: 2.375 V ~ 2.625 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 16-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 16-VFQFPN(3x3)
包裝: 帶卷 (TR)
其它名稱: 843001AKI-40LFT
IDT / ICS 2.5V LVPECL FREQUENCY SYNTHESIZER
13
ICS843001AK-40 REV. A OCTOBER 10, 2007
ICS843001-40
FEMTOCLOCKS CRYSTAL-TO-2.5V LVPECL FREQUENCY SYNTHESIZER
POWER CONSIDERATIONS
This section provides information on power dissipation and junction temperature for the ICS843001-40.
Equations and example calculations are also provided.
1. Power Dissipation.
The total power dissipation for the ICS843001-40 is the sum of the core power plus the power dissipated in the load(s).
The following is the power dissipation for V
CC
= 2.5V + 5% = 2.625V, 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
= 2.625V * 80mA = 210mW
Power (outputs)
MAX
= 30mW/Loaded Output pair
Total Power
_MAX
= 210mW + 30mW = 240mW
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 74.9°C/W per Table 6 below.
Therefore, Tj for an ambient temperature of 70°C with all outputs switching is:
70°C + 0.240W * 74.9°C/W = 87.9°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 6. THERMAL RESISTANCE
θθθθθ
JA
FOR
16-PIN VFQFN, FORCED CONVECTION
θθθθθ
JA
vs. 0 Air Flow (Meters per Second)
0
1
2.5
Multi-Layer PCB, JEDEC Standard Test Boards
74.9°C/W
65.5°C/W
58.8°C/W
相關(guān)PDF資料
PDF描述
CS4361-CZZ IC DAC STER 6CH 103DB 20TSSOP
VI-J5Y-MZ-F1 CONVERTER MOD DC/DC 3.3V 16.5W
VI-J5X-MZ-F4 CONVERTER MOD DC/DC 5.2V 25W
VI-JT3-MZ-F3 CONVERTER MOD DC/DC 24V 25W
VI-JT3-MZ-F2 CONVERTER MOD DC/DC 24V 25W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ICS843001BGI 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR
ICS843001BGI-23LF 功能描述:IC SYNTHESIZER LVPECL 24-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(biāo)準(zhǔn)包裝:1,000 系列:Precision Edge® 類型:時鐘/頻率合成器 PLL:無 輸入:CML,PECL 輸出:CML 電路數(shù):1 比率 - 輸入:輸出:2:1 差分 - 輸入:輸出:是/是 頻率 - 最大:10.7GHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VFQFN 裸露焊盤,16-MLF? 供應(yīng)商設(shè)備封裝:16-MLF?(3x3) 包裝:帶卷 (TR) 其它名稱:SY58052UMGTRSY58052UMGTR-ND
ICS843001BGI-23LFT 功能描述:IC SYNTHESIZER LVPECL 24-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(biāo)準(zhǔn)包裝:27 系列:Precision Edge® 類型:頻率合成器 PLL:是 輸入:PECL,晶體 輸出:PECL 電路數(shù):1 比率 - 輸入:輸出:1:1 差分 - 輸入:輸出:無/是 頻率 - 最大:800MHz 除法器/乘法器:是/無 電源電壓:3.135 V ~ 5.25 V 工作溫度:0°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC(0.295",7.50mm 寬) 供應(yīng)商設(shè)備封裝:28-SOIC 包裝:管件
ICS843001BGILF 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR
ICS843001BGILFT 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL CLOCK GENERATOR