Tool/software:

 Hi team,

Could you please let me know the measurement setup of LMX25412380EVAL?

My customer already has LMX25412380EVAL and USB2ANY…

Tool/software:

Is it possible to set the output of 2 channels with the same frequency but a phase difference of 180°

Tool/software:

I have problem simulating the LMX2582 with PLLatinum sim 1.6.3.0.

When I enter a decimal number for Fosc I get an exception:

See the end of this message for details…

How about an update on PLLatinum Sim.
I am running a simulation with LMX2572LP.
I ran the PLL simulation and saved the results (Fig 1).
Then I load the results and input 280MHz again…

I need some advice regarding the LMX2581.

Fosc: 10MHz, Fout: 280MHz, Fpd: 10MHz.
As a result of actual measurement, spurious at intervals of 10 MHz is observed at 280 MHz.
This spurious is…

Hello, this is a follow-up question to this:
https://e2e.ti.com/support/clock-timing-group/clock-and-timing/f/clock-timing-forum/1278540/trf3765-getting-phase-coherent-behavior-of-multiple…

Hey team,

I have a customer who reached out regarding a part recommendation with the below specs and details. Let me know what you guys think; crossref came up with LMK6C as…

Hi.

In project we have using two LMX2581 in one PCB, both are the the same circut, role, and very similar layout. On the other hand, layout doesn't differ significantly…

Request review materials for product design.

LMX2581 Evb Design Source.

Ideally gerber files and, if possible, a step 3D of the board.

Thanks

I am running differential outputs with 50 ohm pullups and driving into a demod chip that has input imped of 100 ohms. At 750M I'm measuring a high second harmonic level of -10dBc. I am only getting 18dB image rejection from the demod…

Part Number: LMX2433EVAL

I can´t communicate the computer with the PLL.

I am using a HPA665-001 to program LMX2433EVAL board. Between both is SV600857-001 (USBANY-UWIRE). This board has a lot of jumpers. In the user´s guide of LMX2430/33/34 Evaluation…

Dear Sirs.

I have a question regarding the datasheet of LMX2581, chapter 8.3.13.2. Quotation: "The DLD_ERR_CNT specifies how may errors are necessary to cause the circuit to consider the PLL…

Data sheet on Page 7 says OSCIn input voltage min=0.4Vpp, max=1.7Vpp.

Figure 12 and 13 show a much lower sensitivity, on the order of -27dBm.

Can you explain the differences in the data sheet?

Also, I'm using a CMOS TCXO and it appears…

Hi

I know that in LMX2581 EVB i can get the best capacitor for the VCO calibration by clicking on the "setup fast calibration" button.

how can i get the best capacitor for LMX2594…

Table 5 in the data sheet says Approximate (NOT ensured) VCO Core Frequency Ranges. In my design there are boundaries where, as I step in frequency, the VCO core will change. I have identified them according to Table 5. This is not…

Is it OK to leave the unused RFoutB pin open on the LMX2581?

Hi,

I have a new LMX2581EVM and USB2ANY programmer im using to generate a 3.5 GHz Signal  (RFOUTA) and a 125 MHz Signal (RFOUTB). The output of either channel seem fixed at 3.89 GHz regardless…

Please give me some advice regarding the MUXout (LD) of the LMX2581.

OSCin:120MHz, RFout:1540MHz.
The setting of LMX2581 is as follows, and data is written from R5(int).
Even if OSCin is turned on from off, MUXout remains High Level…

Reading the responses from before, I realize one question was not answered. The earlier post is marked resolved so I am asked this question again.  In writing to Reg 6 with LD_SELECT = 4, table 15 shows the register map with RD_DIAGNOSTICS…

LD_SELECT can be values from 0 to 15. For number 4, READBACK, you have to clock out the bits for the register you are reading. It appears other bits are just a single logic output such as for LD_SELECT values of  1, 2, or 3 that are…

We are trying to implement FM on a 450MHz output signal. which we get an response ,( AM implement on loop filter)

but this is not stable or consistant over our Audio frequency range ( 1-40KHz)

Do you think this is possible to get reliable…

Hi, We have designed a IF/RF synthesizer board wherein we have two PLLs i.e. LMX2581, i.e. One on the RF side and one on the IF Side... In one of the PLL we are trying to Generate frequency of 148.4MHz with the below settings in Register…

Hi champs!

Customer asks for differences between both products and what are disadvantages from NON-E to E version ?

Hello TI Team,

I am planning to use LMX2581 RFPLL in my new design for generating Clocks upto 3.5GHz.

I saw Phase noise plots for some frequencies in Datasheet with Narrow and Wide band classifications…