- 您现在的位置：买卖IC网 > PDF目录162995 > 843004AGI-01T (INTEGRATED DEVICE TECHNOLOGY INC) 170 MHz, OTHER CLOCK GENERATOR, PDSO24 PDF资料下载
参数资料
| 型号： | 843004AGI-01T |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 170 MHz, OTHER CLOCK GENERATOR, PDSO24 |
| 封装： | 4.40 X 7.80 MM, 0.925 MM HEIGHT, MO-153, TSSOP-24 |
| 文件页数： | 6/19页 |
| 文件大小： | 1414K |
| 代理商： | 843004AGI-01T |
ICS843004AGI-01 REVISION B MARCH 24, 2011
14
2011Integrated Device Technology, Inc.
ICS843004I-01 Data Sheet
FEMTOCLOCK CRYSTAL-TO-3.3V, 2.5V LVPECL FREQUENCY SYNTHESIZER
Power Considerations
This section provides information on power dissipation and junction temperature for the ICS843004I-01.
Equations and example calculations are also provided.
1.
Power Dissipation.
The total power dissipation for the ICS843004I-01 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 * 130mA = 450.45mW
Power (outputs)MAX = 30mW/Loaded Output pair
If all outputs are loaded, the total power is 4 * 30mW = 120mW
Total Power_MAX (3.465V, with all outputs switching) = 450.45mW + 120mW = 570.45mW
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 a moderate air
flow of 1 meter per second and a multi-layer board, the appropriate value is 65°C/W per Table 6 below.
Therefore, Tj for an ambient temperature of 85°C with all outputs switching is:
85°C + 0.570W * 65°C/W = 122°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 6. Thermal Resistance θJA for 24 Lead TSSOP, Forced Convection
θ
JA vs. Air Flow
Meters per Second
01
2.5
Multi-Layer PCB, JEDEC Standard Test Boards
70°C/W
65°C/W
62°C/W
相关PDF资料 |
PDF描述 |
|---|---|
| 84320-2 | 18 CONTACT(S), BOARD AND PANEL MOUNT, MINI DIN CONNECTOR, RECEPTACLE |
| 8433310200 | INTERCONNECTION DEVICE |
| 8433310300 | INTERCONNECTION DEVICE |
| 8433310500 | INTERCONNECTION DEVICE |
| 8433290200 | INTERCONNECTION DEVICE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| 843004AGI-02LF | 制造商:Integrated Device Technology Inc 功能描述:Frequency Synthesizer 制造商:Integrated Device Technology Inc 功能描述:24 E-TSSOP (GREEN) - Bulk |
| 843004AGI-02LFT | 制造商:Integrated Device Technology Inc 功能描述:PLL Frequency Synthesizer Single 24-Pin TSSOP T/R 制造商:Integrated Device Technology Inc 功能描述:24 E-TSSOP (GREEN) - Tape and Reel |
| 843004AGI-04 | 制造商:Integrated Device Technology Inc 功能描述:843004AGI-04 - Rail/Tube |
| 843004AGI-04LF | 功能描述:时钟合成器/抖动清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
| 843004AGI-04LFT | 功能描述:时钟合成器/抖动清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。