參數(shù)資料
型號(hào): ICS8430S10BYI-02LFT
廠商: IDT, Integrated Device Technology Inc
文件頁(yè)數(shù): 16/31頁(yè)
文件大小: 0K
描述: IC CLK GENERATOR PLL 48TQFP
標(biāo)準(zhǔn)包裝: 1,000
類型: 時(shí)鐘/頻率發(fā)生器,扇出緩沖器(分配),多路復(fù)用器
PLL:
主要目的: Cavium 處理器
輸入: LVCMOS,LVDS,LVPECL,LVTTL,SSTL,晶體
輸出: LVCMOS,LVDS,LVPECL,LVTTL
電路數(shù): 1
比率 - 輸入:輸出: 2:10
差分 - 輸入:輸出: 是/是
頻率 - 最大: 133.33MHz
電源電壓: 3.135 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 48-TQFP 裸露焊盤
供應(yīng)商設(shè)備封裝: 48-PTQFP-EP(7x7)
包裝: 帶卷 (TR)
ICS8430S10BYI-02 REVISION C JANUARY 17, 2011
23
2011 Integrated Device Technology, Inc.
ICS8430S10I-02 Data Sheet
CLOCK GENERATOR FOR CAVIUM PROCESSORS
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 no air flow and
a multi-layer board, the appropriate value is 33.1°C/W per Table 7A below.
Therefore, Tj for an ambient temperature of 85°C with all outputs switching is:
85°C + 0.968W * 33.1°C/W = 117°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 7A. Thermal Resistance θJA for 48 Lead TQFP, EPAD Forced Convection
θ
JA Vs. Air Flow
Meters per Second
01
2.5
Multi-Layer PCB, JEDEC Standard Test Boards
33.1°C/W
27.2°C/W
25.7°C/W
相關(guān)PDF資料
PDF描述
VI-B1L-IU CONVERTER MOD DC/DC 28V 200W
VI-B1D-IU CONVERTER MOD DC/DC 85V 200W
VE-2N4-MX-F4 CONVERTER MOD DC/DC 48V 75W
MS3106A28-12S CONN PLUG 26POS STRAIGHT W/SCKT
MS3451W14S-5P CONN RCPT 5POS CBL MNT W/PINS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ICS8430S10I-03 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:Clock Generator for Cavium Processors
ICS8431-01 制造商:ICS 制造商全稱:ICS 功能描述:200MHZ, LOW JITTER, LVPECL FREQUENCY SYNTHESIZER
ICS843101-312 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVPECL 312.5MHZ FREQUENCY MARGINING SYNTHESIZER
ICS843101AG-312 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVPECL 312.5MHZ FREQUENCY MARGINING SYNTHESIZER
ICS843101AG-312LF 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVPECL 312.5MHZ FREQUENCY MARGINING SYNTHESIZER