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参数资料
| 型号： | LC72121 |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 160 MHz, PDIP22 |
| 封装： | DIP-22 |
| 文件页数： | 10/23页 |
| 文件大小： | 377K |
| 代理商： | LC72121 |
Figure 3 Combining with Software
Outputting the unlocked state data in the serial data
At the point of data output 1 in figure 3, the unlocked state data will indicate the unlocked state, since the VCO
frequency is not stable (locked) yet. In cases such as this, the application should wait at least one whole period and then
check again whether or not the frequency has stabilized with the data output 2 operation in the figure. Applications can
implement even more reliable recognition of the locked state by performing several more checks of the state and
requiring that the locked state be detected sequentially.
<Flowchart for Lock Detection>
Directly outputting the unlocked state to the DO pin
Since the unlocked state (high level when locked, low when unlocked) is output from the DO pin, applications can
check for the locked state by waiting at least two reference frequency periods after changing the divisor N. However, in
this case also, even more reliable recognition of the locked state can be achieved by performing several checks of the
state and requiring that the locked state be detected sequentially.
Wait at least 2 reference frequency periods.
Valid output data is acquired by using an interval of at
least one reference frequency period.
*: Even more reliable recognition of the locked state
can be achieved by performing several checks of the
state and requiring that the locked state be detected
sequentially.
Divisor N changed (data input)
Data output (1)
Data output (2)
No. 5815-18/23
LC72121, 72121M, 72121V
Locked state check
*
YES
NO
A10180
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LC72121_03 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizers for Electronic Tuning |
| LC72121-D-E | 制造商:ON Semiconductor 功能描述:PLL FREQUENCY SYNTHESIZER - Ammo Pack 制造商:ON Semiconductor 功能描述:PLL FREQ SYNTHESIZER 制造商:ON Semiconductor 功能描述:FNFLD / PLL FREQUENCY SYNTHESIZER |
| LC72121M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:PLL Frequency Synthesizers for Electronic Tuning |
| LC72121MA | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:CMOS IC PLL Frequency Synthesizers for Electronic Tuning |
| LC72121MA-AH | 功能描述:时钟合成器/抖动清除器 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 |
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