Part Number: LMX2820 Tool/software: Hi,
According to the schematic of LMX2820, CPOUT and VTUNE require three capacitors: 68nF, 2.2nF, and 480pF. However, we currently lack the 68nF and 2.2nF capacitors. Can we use capacitors with other values as substitutes…
Part Number: LMX2820 Tool/software: HI!
After the LMX2820 instant calibration initialization, the frequency was changed from 5.65GHz to 10GHz. The LD lock time is 6 seconds. Procedure Without power off, 10GHz lock off after even calibration: R1:0X57A0 …
Qiaonian,
I think that if you do without the doubler and force CAPCODE and DACISET you should get consistent results. But if you see still inconsistencies, it would be good to eliminate the doubler also. The doubler also has a calibration and if this…
Part Number: LMX2820 Tool/software: Hi,
In the datasheet for LMX2820 there is a specification for the dynamic range and speed of the MUTE function (using the external pin), i.e. Pmute, tMute, tUnmute.
Similar to the mute function I'm interested in switching…
Part Number: LMX2820 Tool/software: Hi,
As shown in the topology below, the LMX2820 works in Cat.3 synchronization mode. Whether to support the phase alignment of the output clocks of two chips, the error phase between the two outputs is fixed.
There…
Part Number: LMX2820 Tool/software: Hi Noel, I hv used LMX2820 for 18.5GHz frequency generation, I am observing 18.5GHz is going out of lock over the period .
Among 50ICs assembled 23 ICs are having this issue Plz suggest some solution Here I am attaching…
Part Number: LMX2820 Tool/software: Hi Team,
I'm using the LMX2820 PLL IC on my board and interfacing it with USB to Any. I’ve connected a 10-pin ribbon cable on one side (to USB to Any) and a micro-D connector on the other. While the device is detected…
Part Number: LMX2820 Tool/software: We are using LMX2820 to generate 18.5 GHz signal. In the output we are seeing some random spurs with a span of 2 MHz and the spurs are not uniform and it keeps on changing for every sweep. I have attached two three…
Part Number: LMX2820 Tool/software: Many PLL devices which have an internal OSCIN doubler advice not to use higher fIN for better phase noise performance. How does this apply to the LMX2820 ?
Part Number: LMX2820 Tool/software: When I use Instant Calibration to output a frequency of 5.65 GHz for the first time, it outputs 5.6 GHz instead, and the LMX2820 fails to lock when set to output 5.65 GHz.
Additionally, when using Instant Calibration…
