• LMX2492: Is there a way to reset or set the mash seed for this part?

  

  K

  TI Thinks Resolved

  Part Number: LMX2492 I sometimes do not get repeatable spur behavior on the eval board while switching through a sequence of different settings for the FRAC_ORDER, FRAC_DITHER, FRAC_NUM, and FRAC_DEN. When I return to my initial settings, the spur behavior…

  • 25 days ago
  • Clock & timing
  • Clock & timing forum

• LMX2492: chirp signal

  

  Amy Luo

  TI Thinks Resolved

  Part Number: LMX2492 Other Parts Discussed in Thread: LMX2491 Hi team, If I want to design a simple chirp signal, do I need to configure TRIG1_PIN、TRIG2_PIN、MOD_PIN、MUXout_PIN、TRIG1_MUX、TRIG2_MUX、MOD_MUX、MUXout_MUX ？ There is no such configuration in…

  • 2 months ago
  • Clock & timing
  • Clock & timing forum

• LMX2492-Q1: Behavioural simulation in ADS

  

  Angel Triano

  TI Thinks Resolved

  Part Number: LMX2492-Q1 Hello, I am working in a frequency synthesizer, and I'm trying to model its behaviour with ADS keysight. However, my results are not very accurate compared to real behaviour of the PLL. Could you provide any aid in modeling…

  • 3 months ago
  • Clock & timing
  • Clock & timing forum

• RE: LMX2492: Disturbing frequency at 156 kHz on Vcc or GND

  

  Chris Ue

  Hi Noel, OK, so we need to try to get along with it. Thank you for your suggestions and assistance.

  • 4 months ago
  • Clock & timing
  • Clock & timing forum
Answered

• RE: LMX2492: Sub Fractional Spurious Level

  

  Dean Banerjee

  Resolved

  Hi, PLLatinum Sim calculates the sub-fractional spurs based on a numerical sequence from the MASH; it's pure math and not part specific. I think that what you might be seeing is that near the fraction of 1/2, the sub-fractional spurs might be lower…

  • 6 months ago
  • Clock & timing
  • Clock & timing forum
Answered

• LMX2492: My question is about the LMX2492 Ramping Functions:

  

  Ray Vincent Aranzaso

  Resolved

  Part Number: LMX2492 Hi, Good Day. I have a customer who is working with LMX2492. Please see below his query for your reference. Thank you very much. In the register R58[1] (RAMP_CLK) we can select an external clock (MOD bus) for the ramp increment. Is…

  • Resolved

  • 10 months ago
  • Clock & timing
  • Clock & timing forum

• LMX2492: Wait time after chip reset?

  

  hien ho

  TI Thinks Resolved

  Part Number: LMX2492 Other Parts Discussed in Thread: LMX2491 Is there a specific timing for LMX2492 after SWRST is set? How long should we wait until reset is done? After this do we need to proceed with clearing the SWRST bit? and then proceed with programming…

  • 7 months ago
  • Clock & timing
  • Clock & timing forum

• LMX2492: How to use Trig1、Trig2 or MOD pin to trigger chirp signal transmission

  

  Amy Luo

  Part Number: LMX2492 Hi team, One of our customers has the following needs: Give Trig1、Trig2 or MOD pin a trigger signal of a rising edge, and then the chirp signal starts to be sent. The cycle of a chirp is 60us. I send the trigger signal every 100us…

  • 6 months ago
  • Clock & timing
  • Clock & timing forum
Answered

• LMX2492: control high voltage Vtune VCO

  

  dao van ngan

  Resolved

  Part Number: LMX2492 Hi Texas Instruments, I want to make 11GHz output on LMX2492 and external VCO, MAOC-009265-TR0500(VCO on LMX2492evm) or most of VCO on market have 12V Vtune, but CPout of LMX2492 is 5V. Therefore, I need an active loop filter. I use…

  • Resolved

  • 8 months ago
  • Clock & timing
  • Clock & timing forum

• LMX2492: Fin and OSCin pins frequency limits? Frequency sweep on OSCin?

  

  AnBer

  TI Thinks Resolved

  Part Number: LMX2492 Team, Can you please help with the below questions? The lower frequency limit of the Fin pin is 500 MHz according to the data sheet. Is this a hard limit? Does the input still work below 500 MHz? Or is it just not specified for frequencies…

  • 7 months ago
  • Clock & timing
  • Clock & timing forum

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