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参数资料
| 型号： | ICS840004BGI-01LFT |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 4/18页 |
| 文件大小： | 0K |
| 描述： | IC FREQ SYNTHESIZER 20TSSOP |
| 标准包装： | 2,500 |
| 系列： | HiPerClockS™, FemtoClock™ |
| 类型： | 频率合成器 |
| PLL： | 带旁路 |
| 输入： | LVCMOS，LVTTL，晶体 |
| 输出： | LVCMOS，LVTTL |
| 电路数： | 1 |
| 比率 - 输入:输出： | 2:4 |
| 差分 - 输入:输出： | 无/无 |
| 频率 - 最大： | 156.25MHz |
| 除法器/乘法器： | 是/无 |
| 电源电压： | 2.375 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-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 20-TSSOP |
| 包装： | 带卷 (TR) |
ICS840004I-01
FEMTOCLOCKS CRYSTAL-TO-LVCMOS/LVTTL CLOCK SYNTHESIZER
IDT / ICS LVCMOS/LVTTL FREQUENCY SYNTHESIZER
12
ICS840004BGI-01 REV. C FEBRUARY 9, 2009
Application Information
Recommendations for Unused Input and Output Pins
Inputs:
Crystal Inputs
For applications not requiring the use of the crystal oscillator input,
both XTAL_IN and XTAL_OUT can be left floating. Though not
required, but for additional protection, a 1k
resistor can be tied
from XTAL_IN to ground.
REF_CLK Input
For applications not requiring the use of the reference clock, it can
be left floating. Though not required, but for additional protection,
a 1k
resistor can be tied from the REF_CLK to ground.
LVCMOS Control Pins
All control pins have internal pull-downs; additional resistance is
not required but can be added for additional protection. A 1k
resistor can be used.
Outputs:
LVCMOS Outputs
All unused LVCMOS outputs can be left floating. We recommend
that there is no trace attached.
Power Supply Filtering Technique
As in any high speed analog circuitry, the power supply pins are
vulnerable to random noise. To achieve optimum jitter perfor-
mance, power supply isolation is required. The ICS840004I-01
provides separate power supplies to isolate any high switching
noise from the outputs to the internal PLL. VDD, VDDA and VDDO
should be individually connected to the power supply plane
through vias, and 0.01F bypass capacitors should be used for
each pin. Figure 1 illustrates this for a generic VDD pin and also
shows that VDDA requires that an additional 10 resistor along with
a 10
F bypass capacitor be connected to the V
DDA pin.
Figure 1. Power Supply Filtering
VDD
VDDA
3.3V
10
10F
.01F
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS840004BGILF | 功能描述:IC FREQ SYNTHESIZER 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™, FemtoClock™ 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 |
| ICS840004BGILFT | 功能描述:IC FREQ SYNTHESIZER 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™, FemtoClock™ 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 |
| ICS840004I | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840004I-01 | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TOLVCMOS/LVTTL FREQUENCY SYNTHESIZER |
| ICS840008-01 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER |
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