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參數(shù)資料
| 型號： | ICS813323BGLFT |
| 廠商： | IDT, Integrated Device Technology Inc |
| 文件頁數(shù)： | 10/22頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ATTENUATOR/MULTIPLIER 24TSSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 系列： | HiPerClockS™, FemtoClock™ |
| 類型： | 扇出配送，頻率變換器，抖動衰減器，壓控晶體振蕩器（VCXO） |
| PLL： | 帶旁路 |
| 輸入： | HCSL，LVDS，LVHSTL，LVPECL，SSTL |
| 輸出： | LVPECL |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 2:3 |
| 差分 - 輸入:輸出： | 是/是 |
| 頻率 - 最大： | 622.08MHz |
| 除法器/乘法器： | 是/無 |
| 電源電壓： | 3.135 V ~ 3.465 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-TSSOP |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | 813323BGLFT |
ICS813323BG REVISION A APRIL 13, 2010
18
2010 Integrated Device Technology, Inc.
ICS813323 Data Sheet
VCXO JITTER ATTENUATOR & FEMTOCLOCKMULTIPLIER
Power Considerations
This section provides information on power dissipation and junction temperature for the ICS813323.
Equations and example calculations are also provided.
1.
Power Dissipation.
The total power dissipation for the ICS813323 is the sum of the core power plus the power dissipated in the load(s).
The following is the power dissipation for VCCO = 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 = VCCO_MAX * IEE_MAX = 3.465V * 130mA = 450.45mW
Power (outputs)MAX = 30mW/Loaded Output pair
If all outputs are loaded, the total power is 3 * 30mW = 90mW
Total Power_MAX (3.3V, with all outputs switching) = 450.45mW + 90mW = 540.45mW
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 82.3°C/W per Table 6 below.
Therefore, Tj for an ambient temperature of 70°C with all outputs switching is:
70°C + 0.540W * 82.3°C/W = 114.4°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 (multi-layer).
Table 6. Thermal Resistance θJA for 24 Lead TSSOP, Forced Convection
θ
JA by Velocity
Meters per Second
01
2.5
Multi-Layer PCB, JEDEC Standard Test Boards
82.3°C/W
78.0°C/W
75.95°C/W
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| ICS813N252AKI-04LF | 功能描述:IC VCXO ATTENUATOR/MULT 32VFQFPN 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:- 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 |
| ICS813N252AKI-04LFT | 功能描述:IC VCXO ATTENUATOR/MULT 32VFQFPN 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:- 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 |
| ICS813N252BKI-04LF | 制造商:Integrated Device Technology Inc 功能描述:IC FEMTOCLOCK MULT NG 32VFQFN |
| ICS813N252BKI-04LFT | 制造商:Integrated Device Technology Inc 功能描述:IC FEMTOCLOCK MULT NG 32VFQFN |
| ICS813N252I-02 | 制造商:IDT 制造商全稱:Integrated Device Technology 功能描述:Jitter Attenuator & FemtoClock NG? Multiplier |
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