Part Number: LMX2595
Other Parts Discussed in Thread: LMX2594
I'm using LMX-2595,Need to get same POWER at all output's of LMX-2595,is there any solution for getting constant power at all output,can you please suggest me and help me on this issue
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Hello Dilip,
The LMX2595 has an adjustable output power setting. If you are using two different output frequencies, or two different trace lengths, or perhaps you are using the same frequency and traces, but still see a mismatch in the RFoutA and RFoutB power, you can adjust this power setting to get them closer together.
R44[13:8] is OUTA_PWR
R45[5:0] is OUTB_PWR
Thanks,
Vibhu
Hello Vibhu,
Thanks for your response.
I need fixed power at all output's
Ex: 3Ghz to 4Ghz is the my output range with 2Ghz Step size
so i need only CONSTANT POWER at all outputs in between 3Ghz to 4Ghz
Is it possible??
can you please help me on this issue
Thank You.
HI Dilip,
As you can see in Figure 19 of the datasheet, the output power is not constant across frequencies.
If you need constant power, you have to manually adjust the output power using the OUTx_PWR register.
The resolution of OUTx_PWR is not very high, if you cannot tolerate this resolution, you will need a variable attenuator after LMX2594.
hi,
i need power calibration values for set the constant power if it is possible please share to me for set the constant power on LMX-2595
If the calibration values are available i'll try to set that values in array and set the power as constant please help me on this issue thank you
Hi Dilip,
Figure 20 of the datasheet has a typical plot of OUTx_PWR setting vs change in output power.