LMX2594PSEVM: Inquiries regarding LMX2594PSEVM2

akiyoshi ono

Part Number: LMX2594PSEVM
Other Parts Discussed in Thread: LMX2594,

to whom it may concern

●question 1
I use Category 3 shown in
the red frame on Page 1.
In this case, is it okay to
leave the A part connector
of Page 2 open? Or do I
need to connect
something?

See attachment page 1





●question2
Is it okay if I don't connect
anything to the A connector?
Or do I need to connect something?

See attachment page 2




●Question3
Can I extract signals of different frequencies from A and B?
Please tell me how to do it if possible.

See attachment page 3

BestRegards
akiyoshi onoInquiries regarding LMX2594PSEVM.pdf

5 months ago

0 vicente flores prado 5 months ago

TI__Genius 14851 points

Hi Akiyoshi,
Q1. Please terminate unused connectors with a 50 Ohm connector for optimum performance.

Q2. Same answer as above. ^

Q3. I am not sure what you mean by extract different signals from RFOUTA & RFOUTB.
If you set the Output MUX to "Channel Divider" both RFOUTA & RFOUTB must share the same channel divider value.
You can set one of the Output MUX to "VCO" mode which is direct VCO output.

Regards,

Vicente

0 akiyoshi ono 5 months ago in reply to vicente flores prado

Prodigy 20 points

Hi Vicente

I want the C port to generate at 5.8GHz and the D port to generate

at 5.9GHz.

Is it possible to do it using the settings

shown in Fig1 that you showed?

Where can I find the instruction manual for TICS

pro?Inquiries regarding LMX2594PSEVM2.pdf

0 vicente flores prado 5 months ago in reply to akiyoshi ono

TI__Genius 14851 points

SPHi Akiyoshi,
Given that both RFoutA & RFoutB share the same output channel divider it is not possible to generate both 5.8GHz on RFoutA & 5.9GHz on RFoutB, as a matter of fact I don't believe we have any space grade device capable of this given we either require fractional output dividers to cover two frequency domains or two VCOs.
Given the EVM contains two LMX2594-SP ICs you can have one IC output 5.8GHz & the other IC output 5.9GHz but you cannot achieve both outputs from just one LMX2594-SP device.

We don't have a instruction manual just for TICSpro per say instead we have EVM user guides for each of our clocking devices.
Here is the user guide for LMX2594SPEVM: www.ti.com/.../snau278.pdf

Regards,

Vicente

0 akiyoshi ono 5 months ago in reply to vicente flores prado

Prodigy 20 points

Hi Vicente

Below is an example of programming two PLL-ICs separately.
Is it not possible to genarete at different frequencies using this method?
LMX2594PSEVM: Programming each of the two synthesizers separately - Clock & timing forum - Clock & timing - TI E2E support forums

0 vicente flores prado 5 months ago in reply to akiyoshi ono

TI__Genius 14851 points

Hi Akiyoshi,
That is correct and what I said:

vicente flores prado said:
Given the EVM contains two LMX2594-SP ICs you can have one IC output 5.8GHz & the other IC output 5.9GHz but you cannot achieve both outputs from just one LMX2594-SP device.

You can have one LMX2594-SP output 5.8GHz and the second LMX2594 output 5.9GHz but you cannot have a single LMX2594-SP device output both 5.8GHz & 5.9 GHz simultaneously.

Regards,

Vicente

0 akiyoshi ono 5 months ago in reply to vicente flores prado

Prodigy 20 points

Vicente

As shown in the attached file, LMX2594PSEVM is equipped with two PLL-ICs.
Therefore, I think I can output 5.8GHz from one IC and 5.9GHz from the other IC.
I would like to know this method.
Do you have any good materials?LMX2594PSEVM.pdf

0 vicente flores prado 5 months ago in reply to akiyoshi ono

TI__Genius 14851 points

Hi Akiyoshi,

akiyoshi ono said:
Therefore, I think I can output 5.8GHz from one IC and 5.9GHz from the other IC.

That is correct - that's what I have been stating.

akiyoshi ono said:
I would like to know this method.

I don't understand your question here.
You must first program and lock one device to 5.8 GHz & then program and lock the second device to 5.9GHz.

The user guides describes this in detail.

1.Ensure individual switches of just ONE LMX2594 are in ON position. Let's go with SW1 in this case thus make sure SW2 is is OFF position.

2. Open TICSpro

3. Load LMX2594 device profile

4. Program device 1 to output 5.8 GHz at RFoutX

5. Put SW1 in OFF positions and change SW2 to on positions

6. Program device 2 to output 5.9 GHz at RFoutX

Regards,

Vicente

0 akiyoshi ono 5 months ago in reply to vicente flores prado

Prodigy 20 points

Hi Vicente

thank you
I'll try reading the user guide
BestRegards
akiyoshi ono