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参数资料
| 型号： | SY89537LMHTR |
| 厂商： | MICREL INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 756 MHz, OTHER CLOCK GENERATOR, QCC44 |
| 封装： | 7 X 7 MM, LEAD FREE, MO-220, MLF-44 |
| 文件页数： | 7/19页 |
| 文件大小： | 819K |
| 代理商： | SY89537LMHTR |
Micrel, Inc.
SY89537L
July 2005
M9999-072105
hbwhelp@micrel.com or (408) 955-1690
15
Figure 6 shows the open and closed loop gain of the
SY89537L. The closed loop-gain plot shows that the
SY89537L when configured with the recommended
loop filter values has essentially no jitter peaking near
the -3dB point. In addition, the open loop curve shows
the frequency at which unity gain occurs for a typical
case of the SY89537L with VCC = 3.3V at TA = 25°C.
At unity gain, Figure 7 can be used to determine the
phase margin or stability of the SY89537L.
Figure 6. Open and Closed Loop Gain
at VCC = 3.3V, TA = 25°C
Figure 7. Phase Margin Plot
at VCC = 3.3V, TA = 25°C
Figure 8 illustrates the VCO frequency versus the loop
filter control voltage at 3.3V, TA = 25°C. The normal
loop filter control voltage is -300mV to +300mV.
Figure 9 illustrates the VCO gain curve at VCC = 3.3V,
TA = 25°C. With this set of information, determining
the loop stability with other sets of loop filter
configurations are possible.
Figure 8. VCO Frequency vs.
Loop Filter Control Voltage at 3.3V, TA = 25°C
Figure 9. VCO Gain vs.
Loop Filter Control Voltage at 3.3V, TA = 25°C
Input Interface
RFCK is designed to accept any differential or single-
ended input signal 300mV above VCC or 300mV below
GND. RFCK should not be left floating. Tie either the
true or complement input to GND, but not both. A logic
zero is achieved by connecting the complement input
to GND with the true input floating. For TTL input, tie a
2.5k resistor between the complement input and
GND. LVDS, CML and HSTL differential signals may
be connected directly to the reference inputs.
Figure 10. Simplified Input Structure
dB
Phase
M
argin
(
°)
Frequency (Hz)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SY89537LMY | 功能描述:时钟合成器/抖动清除器 3.3V LVPECL/LVDS Clock Synthesizer System (I Temp, Green) 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 |
| SY89537LMY TR | 功能描述:时钟合成器/抖动清除器 3.3V LVPECL/LVDS Clock Synthesizer System (I Temp, Green) 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 |
| SY89537LMYTR | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:3.3V Precision LVPECL and LVDS |
| SY89538L | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:3.3V, Precision LVPECL and LVDS Programmable Multiple Output Bank Clock Synthesizer and Fanout Buffer with Zero Delay |
| SY89538L_06 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:3.3V, Precision LVPECL and LVDS Programmable Multiple Output Bank Clock Synthesizer and Fanout Buffer with Zero Delay |
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