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| 型号： | ICS874S02BMILF |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 5/16页 |
| 文件大小： | 0K |
| 描述： | IC CLK GEN 1:1 DIFF ZD 20SOIC |
| 标准包装： | 37 |
| 系列： | HiPerClockS™ |
| 类型： | * |
| PLL： | 带旁路 |
| 输入： | HCSL，LVDS，LVHSTL，LVPECL，SSTL |
| 输出： | LVDS |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:1 |
| 差分 - 输入:输出： | 是/是 |
| 频率 - 最大： | 1GHz |
| 除法器/乘法器： | 是/是 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 20-SOIC |
| 包装： | 管件 |
ICS874S02I
1:1 DIFFERENTIAL-TO-LVDS ZERO DELAY CLOCK GENERATOR
IDT / ICS LVDS CLOCK GENERATOR
13
ICS874S02BMI REV. AOCTOBER 16, 2008
Power Considerations
This section provides information on power dissipation and junction temperature for the ICS874S02I.
Equations and example calculations are also provided.
1.
Power Dissipation.
The total power dissipation for the ICS874S02I is the sum of the core power plus the analog power plus the power dissipated in the load(s).
The following is the power dissipation for VDD = 3.3V + 5% = 3.465V, which gives worst case results.
The maximum current at 85°C is as follows:
IDD_MAX = 93mA
IDDA_MAX = 19mA
IDDO_MAX = 36mA
Power (core)MAX = VDD_MAX * (IDD_MAX + IDDA_MAX) = 3.465V * (93mA + 19mA) = 388.08mW
Power (outputs)MAX = VDDO_MAX * IDDO_MAX = 3.465V * 36mA = 124.74mW
Total Power_MAX = 388.08mW + 124.74mW = 512.82mW
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 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)
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 64.7°C/W per Table 7 below.
Therefore, Tj for an ambient temperature of 85°C with all outputs switching is:
85°C + 0.513W * 64.7°C/W = 118.2°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).
Table 7. Thermal Resistance θJA for 20 Lead SOIC, Forced Convection
θ
JA by Velocity
Linear Feet per Minute
0200
500
Multi-Layer PCB, JEDEC Standard Test Boards
64.7°C/W
56.7°C/W
53.5°C/W
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相关代理商/技术参数 |
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|---|---|
| ICS874S02BMILFT | 功能描述:IC CLK GEN 1:1 DIFF ZD 20SOIC RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™ 标准包装:1,000 系列:- 类型:时钟/频率合成器，扇出分配 PLL:- 输入:- 输出:- 电路数:- 比率 - 输入:输出:- 差分 - 输入:输出:- 频率 - 最大:- 除法器/乘法器:- 电源电压:- 工作温度:- 安装类型:表面贴装 封装/外壳:56-VFQFN 裸露焊盘 供应商设备封装:56-VFQFP-EP（8x8） 包装:带卷 (TR) 其它名称:844S012AKI-01LFT |
| ICS874S02BMIT | 制造商:Integrated Device Technology Inc 功能描述:IC CLK GENERATOR ZDB 20SOIC |
| ICS874S336AGLF | 功能描述:IC CLOCK MULTIPLIER LVDS 20TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™ 标准包装:27 系列:Precision Edge® 类型:频率合成器 PLL:是 输入:PECL，晶体 输出:PECL 电路数:1 比率 - 输入:输出:1:1 差分 - 输入:输出:无/是 频率 - 最大:800MHz 除法器/乘法器:是/无 电源电压:3.135 V ~ 5.25 V 工作温度:0°C ~ 85°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| ICS874S336AGLFT | 功能描述:IC CLOCK MULTIPLIER LVDS 20TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:HiPerClockS™ 标准包装:27 系列:Precision Edge® 类型:频率合成器 PLL:是 输入:PECL，晶体 输出:PECL 电路数:1 比率 - 输入:输出:1:1 差分 - 输入:输出:无/是 频率 - 最大:800MHz 除法器/乘法器:是/无 电源电压:3.135 V ~ 5.25 V 工作温度:0°C ~ 85°C 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC 包装:管件 |
| ICS8752CY | 制造商:INT_CIR_SYS 功能描述: |
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