- 您现在的位置：买卖IC网 > PDF目录8981 > ICS843003AGLFT (IDT, Integrated Device Technology Inc)IC SYNTHESIZER LVPECL 24-TSSOP PDF资料下载
参数资料
| 型号： | ICS843003AGLFT |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 5/21页 |
| 文件大小： | 0K |
| 描述： | IC SYNTHESIZER LVPECL 24-TSSOP |
| 标准包装： | 2,500 |
| 系列： | HiPerClockS™, FemtoClock™ |
| 类型： | 频率合成器 |
| PLL： | 带旁路 |
| 输入： | 晶体 |
| 输出： | LVPECL |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:3 |
| 差分 - 输入:输出： | 无/是 |
| 频率 - 最大： | 700MHz |
| 除法器/乘法器： | 是/无 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 24-TSSOP |
| 包装： | 带卷 (TR) |
| 其它名称： | 843003AGLFT |
ICS843003
FEMTOCLOCKS CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER
IDT / ICS LVPECL FREQUENCY SYNTHESIZER
13
ICS843003AG REV. A FEBRUARY 19, 2008
Crystal Input Interface
The ICS843003 has been characterized with 18pF parallel
resonant crystals. The capacitor values shown in Figure 3
below were determined using a 31.25MHz or 26.041666MHz
18pF parallel resonant crystal and were chosen to minimize the
ppm error.
Figure 3. Crystal Input Interface
LVCMOS to XTAL Interface
The XTAL_IN input can accept a single-ended LVCMOS signal
through an AC coupling capacitor. A general interface diagram is
shown in Figure 4. The XTAL_OUT pin can be left floating. The
input edge rate can be as slow as 10ns. For LVCMOS inputs, it is
recommended that the amplitude be reduced from full swing to half
swing in order to prevent signal interference with the power rail and
to reduce noise. This configuration requires that the output
impedance of the driver (Ro) plus the series resistance (Rs) equals
the transmission line impedance. In addition, matched termination
at the crystal input will attenuate the signal in half. This can be
done in one of two ways. First, R1 and R2 in parallel should equal
the transmission line impedance. For most 50
applications, R1
and R2 can be 100
. This can also be accomplished by removing
R1 and making R2 50
.
Figure 4. General Diagram for LVCMOS Driver to XTAL Input Interface
XTAL_IN
XTAL_OUT
X1
18pF Parallel Crystal
C1
33p
C2
27p
XTAL_IN
XTAL_OUT
Ro
Rs
Zo = Ro + Rs
50
0.1f
R1
R2
VCC
相关PDF资料 |
PDF描述 |
|---|---|
| AD7390ARZ | IC DAC 12BIT 3V SRL-IN 8-SOIC |
| VE-26K-MW-F2 | CONVERTER MOD DC/DC 40V 100W |
| GTC030R-18-10S | CONN RCPT 4POS PANEL MNT W/SCKT |
| MS3452W36-7SX | CONN RCPT 47POS BOX MNT W/SCKT |
| AD7541AKRZ | IC DAC 12BIT MULT MONO 18-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS843003AGT | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843003AI01 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843003I-01 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS-TM CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843003I-09 | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:FEMTOCLOCKS? CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
| ICS843004 | 制造商:ICS 制造商全称:ICS 功能描述:FEMTOCLOCKS⑩ LVCMOS/CRYSTAL-TO- 3.3V LVPECL FREQUENCY SYNTHESIZER |
发布紧急采购，3分钟左右您将得到回复。