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參數(shù)資料
| 型號： | 5322AMI |
| 英文描述： | DUAL LVCMOS / LVTTL-TO-DIFFERENTIAL 2.5V / 3.3V LVPECL TRANSLATOR |
| 中文描述： | 雙的LVCMOS / LVTTL至差分為2.5V / 3.3V的LVPECL的譯者 |
| 文件頁數(shù)： | 8/13頁 |
| 文件大?。?/td> | 160K |
| 代理商： | 5322AMI |
85322AMI
www.icst.com/products/hiperclocks.html
REV. B OCTOBER 7, 2003
8
Integrated
Circuit
Systems, Inc.
ICS85322I
D
UAL
LVCMOS / LVTTL-
TO
-D
IFFERENTIAL
2.5V / 3.3V LVPECL T
RANSLATOR
P
OWER
C
ONSIDERATIONS
This section provides information on power dissipation and junction temperature for the ICS85322I.
Equations and example calculations are also provided.
1. Power Dissipation.
The total power dissipation for the ICS85322I is the sum of the core power plus the power dissipated in the load(s).
The following is the power dissipation for V
= 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
= V
CC_MAX
* I
EE_MAX
= 3.465V * 25mA =
86.6mW
Power (outputs)
MAX
=
30.2mW/Loaded Output pair
If all outputs are loaded, the total power is 2 * 30.2mW =
60.4mW
Total Power
_MAX
(3.465V, with all outputs switching) =
86.6mW + 60.4mW =
147mW
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 + T
A
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
must be used. Assuming a
moderate air flow of 200 linear feet per minute and a multi-layer board, the appropriate value is 103.3°C/W per Table 5 below.
Therefore, Tj for an ambient temperature of 85°C with all outputs switching is:
85°C + 0.147W * 103.3°C/W = 100.2°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).
θ
JA
by Velocity (Linear Feet per Minute)
0
200
500
Single-Layer PCB, JEDEC Standard Test Boards
Multi-Layer PCB, JEDEC Standard Test Boards
153.3°C/W
112.7°C/W
128.5°C/W
103.3°C/W
115.5°C/W
97.1°C/W
NOTE:
Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.
T
ABLE
5. T
HERMAL
R
ESISTANCE
θ
JA
FOR
8-
PIN
SOIC, F
ORCED
C
ONVECTION
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 5322C SL001 | 制造商:Alpha Wire Company 功能描述:5322C SLATE 1000 FT 制造商:Alpha Wire Company 功能描述:CABLE, 20AWG, 12 CORE, SLATE, 304.8M |
| 5322C SL002 | 制造商:Alpha Wire Company 功能描述:5322C SLATE 500 FT 制造商:Alpha Wire Company 功能描述:CABLE, 20AWG, 12 CORE, SLATE, 152.4M 制造商:Alpha Wire Company 功能描述:SHLD MULTICOND CABLE, 12COND, 20AWG, 500FT, 300V; Reel Length (Imperial):500ft; Reel Length (Metric):152.4m; No. of Conductors:12; Conductor Size AWG:20AWG; Voltage Rating:300V; No. of Strands x Strand Size:7 x 28AWG; Drop Ship:Yes ;RoHS Compliant: Yes |
| 5322C SL005 | 制造商:Alpha Wire Company 功能描述:5322C SLATE 100 FT 制造商:Alpha Wire Company 功能描述:CABLE, 20AWG, 12 CORE, SLATE, 30.5M 制造商:Alpha Wire Company 功能描述:SHLD MULTICOND CABLE, 12COND, 20AWG, 100FT, 300V; Reel Length (Imperial):100ft; Reel Length (Metric):30.48m; No. of Conductors:12; Conductor Size AWG:20AWG; Voltage Rating:300V; No. of Strands x Strand Size:7 x 28AWG; Drop Ship:Yes ;RoHS Compliant: Yes |
| 5322F1 | 功能描述:LED 電路板指示器 RED DIFFUSED W/ .25 STANDOFF RoHS:否 制造商:Lumex LED 大小:3 mm 照明顏色:Green 波長:565 nm 光強(qiáng)度:30 mcd 安裝類型:SMD/SMT 顯示角:60 deg 封裝:Reel |
| 5322F1LC | 制造商:VISUAL COMMUNICATIONS COMPANY LLC 功能描述:T1 R/A LED CBI |
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