Answered

• LMX2581E: Digital Lock Detect config

  

  Viktor Vojta

  Resolved

  Part Number: LMX2581E Other Parts Discussed in Thread: LMX2581 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…

  • Resolved

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

• LMX2581E: LMX2581E

  

  Ch Ramakrishna

  TI Thinks Resolved

  Part Number: LMX2581E Other Parts Discussed in Thread: LMX2572 We are planning to use LMX2581E as local oscillator for our super heterodyne architecture.. We need to generate 140MHZ to 240MHZ output frequency with 25MHZ as reference clock.. The frequency…

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

• LMX2581E: Differences LMX2581 vs LMX2581E

  

  DJ-NG

  Resolved

  Part Number: LMX2581E Hi champs! Customer asks for differences between both products and what are disadvantages from NON-E to E version ?

  • Resolved

  • over 1 year ago
  • Clock & timing
  • Clock & timing forum
Answered

• LMX2581E: Footprint/Exposed Pad Size?

  

  Mike Neuman

  Resolved

  Part Number: LMX2581E The LMX2581E uses the RTV mechanical design. The RTV drawing says "Thermal Pad Size and Shape shown on separate sheet". I cannot find this in either the LMX2581E datasheet or elsewhere. Is there a recommended footprint…

  • Resolved

  • over 1 year ago
  • Clock & timing
  • Clock & timing forum
Answered

• LMX2581E: Issue communicating with LMX2581E

  

  Julien Monette

  Resolved

  Part Number: LMX2581E Hello, I designed a board with an LMX2581E and I can't manage to communicate with it. I followed the datasheet recommended initialization sequence which suggest when power is good to soft reset the LMX then write from R15 to R0…

  • Resolved

  • over 2 years ago
  • Clock & timing
  • Clock & timing forum
Answered

• LMX2581E: How does microwire readback work?

  

  Mike Neuman

  Resolved

  Part Number: LMX2581E I'm confused by 8.13.14.2 (serial microwire readback). It appears as though LD or MUXOUT are constantly being driven with readback data (regardless of LE). Is this the case? So, if I program MUXOUT_SELECT to be READBACK, the…

  • Resolved

  • over 1 year ago
  • Clock & timing
  • Clock & timing forum

• LMX2581E: Lock frequency accuracy

  

  Kazuki Itoh

  TI Thinks Resolved

  Part Number: LMX2581E Other Parts Discussed in Thread: LMX2581 Hello team, I'd like to know LMX2581 lock frequency accuracy. In my configuration, VC-TCXO 30.72MHz is used. The phase noise doesn't look good below 10Hz. So I'm looking for proper setting…

  • over 2 years ago
  • Clock & timing
  • Clock & timing forum

• LMX2581E: Is N divider only for Fin?

  

  Taikyon Yoo

  TI Thinks Resolved

  Part Number: LMX2581E In device block diagram, it seems to be that N divider is only for Fin source. Could N divider, PLL_N, configuration not be used for OSCin source?

  • over 3 years ago
  • Clock & timing
  • Clock & timing forum

• LMX2581E: QUERY RELATED TO OUTPUT FREQUENCY

  

  Sreelekshmi Unnithan

  TI Thinks Resolved

  Part Number: LMX2581E Other Parts Discussed in Thread: CDCM6208 Can we generate two different divided frequencies(output of the divider) at the same time in channel A and Channel B? For example channel A need to be generate 300MHz and channel B need to…

  • over 3 years ago
  • Clock & timing
  • Clock & timing forum

• LMX2581E: LMX2581E phase noise is abnormal

  

  PENG YUAN

  TI Thinks Resolved

  Part Number: LMX2581E Hello！ I use LMX2591E as the LO of the down-conversion receiver, the frequency range is 1690MHz~1990MHz, step 0.25MHz, and the phase noise is abnormal in the range of 1879MHz~1881MHz. 1880MHz is typical as shown in the figure above…

  • over 4 years ago
  • Clock & timing
  • Clock & timing forum

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