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参数资料
| 型号： | MK1726-08SLF |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 3/8页 |
| 文件大小： | 0K |
| 描述： | IC CLK GEN SPREAD SPECTRUM 8SOIC |
| 标准包装： | 97 |
| 类型： | 时钟发生器 |
| PLL： | 是 |
| 输入： | 时钟，晶体 |
| 输出： | CMOS |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:2 |
| 差分 - 输入:输出： | 无/无 |
| 频率 - 最大： | 32MHz |
| 除法器/乘法器： | 无/无 |
| 电源电压： | 2.97 V ~ 3.63 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
MK1726-08
SPREAD SPECTRUM CLOCK GENERATOR
SSCG
IDT SPREAD SPECTRUM CLOCK GENERATOR
3
MK1726-08
REV D 051310
External Components
The MK1726-08 requires a minimum number of external
components for proper operation.
Decoupling Capacitor
A decoupling capacitor of 0.01F must be connected
between VDD and GND, as close to these pins as possible.
For optimum device performance, the decoupling capacitor
should be mounted on the component side of the PCB.
Avoid the use of vias in the decoupling circuit.
Series Termination Resistor
When the PCB trace between the clock output and the load
is over 1 inch, series termination should be used. To series
terminate a 50
trace (a commonly used trace impedance)
place a 33
resistor in series with the clock line, as close to
the clock output pin as possible. The nominal impedance of
the clock output is 20
.
PCB Layout Recommendations
For optimum device performance and lowest output phase
noise, the following guidelines should be observed.
1) The 0.01F decoupling capacitor should be mounted on
the component side of the board as close to the VDD pin as
possible. No vias should be used between the decoupling
capacitor and VDD pin. The PCB trace to VDD pin should
be kept as short as possible, as should the PCB trace to the
ground via.
2) To minimize EMI, the 33
series termination resistor (if
needed) should be placed close to the clock output.
3) An optimum layout is one with all components on the
same side of the board, minimizing vias through other signal
layers. Other signal traces should be routed away from the
MK1726-08. This includes signal traces just underneath the
device, or on layers adjacent to the ground plane layer used
by the device.
Crystal Information
The crystal used should be a fundamental mode (do not use
third overtone), parallel resonant. Crystal capacitors should
be connected from pins X1 to ground and X2 to ground to
optimize the initial accuracy. The value of these capacitors
is given by the following equation:
Crystal caps (pF) = (CL - 6) x 2
In the equation, CL is the crystal load capacitance. So, for a
crystal with a 16 pF load capacitance, two 20 pF [(16-6) x 2]
capacitors should be used.
Spread Spectrum Profile
The MK1726-08 low EMI clock generator uses an optimized
frequency slew rate algorithm to facilitate down stream
tracking of zero delay buffers and other PLL devices. The
frequency modulation amplitude is constant with variations
of the input frequency.
Ti m e
F
req
uenc
y
Modulation Rate
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MK1726-08SLFTR | 功能描述:时钟发生器及支持产品 SPREAD SPECTRUM CLOCK GENERATOR RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| MK1726-08STR | 功能描述:IC CLK GEN SPREAD SPECTRUM 8SOIC RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:- 标准包装:39 系列:- 类型:* PLL:带旁路 输入:时钟 输出:时钟 电路数:1 比率 - 输入:输出:1:10 差分 - 输入:输出:是/是 频率 - 最大:170MHz 除法器/乘法器:无/无 电源电压:2.375 V ~ 3.465 V 工作温度:0°C ~ 70°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| MK1727GI-05LFT | 制造商:Integrated Device Technology Inc 功能描述:IDT MK1727GI-05LFT GENERAL PURPOSE SEMICONDUCTORS - Tape and Reel 制造商:Integrated Device Technology Inc 功能描述:IDT MK1727GI-05LFT General Purpose Semiconductors |
| MK1728AG-01LF | 功能描述:时钟发生器及支持产品 2.5V LOW EMI CLOCK GENERATOR RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| MK1728AG-01LFT | 功能描述:时钟发生器及支持产品 2.5V LOW EMI CLOCK GENERATOR RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
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