Hi,recently our customer designing ADF4193 refer to Evaluation Board sch.However the frequency always unlock.
Can you help support relative configure reference code? Thanks.
In the ADF4193 eval board software, there is a setting to lock the PLL into wide bandwidth mode, which was useful for us in debugging some stability issues with an external op-amp. Now that we have the board back, I don't see the register setting that…
I have a quick query regarding the ADF4193 register map. Unlike the ADF4351, the 4193 has registers of a differing number of bits (p.14 of D/S). However, I presume that as you write the control bits last due to the serial programming being MSB first that…
CP has an output voltage of 1.2V~Vp3-0.3V, but after adding an CMR voltage 3V, voltage range becomes 1.8V~Vp3-0.8V. How does this work? I feel confused and when designing circuits that extending VCO tuning voltage. Thank you!
ADF4193锁定时间的典型值是20us, 您可以在ADI公司网站上下载ADIsimPLL工具来做环路的仿真，如果是有源环路，软件会推荐合适的op-amp；http://www.analog.com/en/search.html?q=ADIsimPLL%E2%84%A2-%20Version%203.60.10
http://www.analog.com/en/search.html?q=ADF4193%20Loop%20Filter%20Design%20Using%20ADIsimPLL
The latest ADF4193 and ADF4196 software (v6) is attached.
Installation process:
1. Disconnect any evaluation board
2. Download and run the attached installer
3. Click Next/Continue/Finish when asked
4. Connect your evaluation board
5. Windows will…
ADIsimPLL models fractional spurs but not integer boundary spurs which are caused by a separate mechanism, namely
interaction between the RF and harmonics of the reference frequency. The ADF4193 datasheet talks about one method to avoid integer boundaries…
Lock time depends on PLL loop bandwidth. Wide loop bandwidths lock quickly. Narrow ones slowly.Download ADIsimPLL to get an estimate of performance.For fast locking applications the ADF4193 is the fastest part we have.
Yes.
ADF4193: http://ez.analog.com/thread/12767
ADF4350: http://ez.analog.com/message/38857#38857
I can provide the source codes for both applications if you want.
你好，请教个关于本振的问题：
ADF4193的锁定：从手册上看，当前向分频之后的频率和VCO输出频率分频之后两个频率差在一定范围之内，内部逻辑
检测到连续几个脉冲之内在范围内，就判定为锁定，从手册上看是3ns，是不是可以这样理解：
如果输入频率：10MHz，输出频率：400MHz，鉴相频率为10MHz
这样鉴相周期就是：1/10MHz：100ns，如果差异在3ns，那么假定参考是精确的，那么输出经分频之后的周期就为97ns或者是103ns，这样考虑N分频输出频率就为
412.37MHz或者388…