• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 19 subscribers
  • Views 337 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CDCLVP1204: CDCLVP1204 TERMIANTION REG

guru sai
Intellectual 530 points
Part Number: CDCLVP1204
Other Parts Discussed in Thread: LMK61E2, , TLK10031

I am connecting CDCLP1204 with LMK61E2 as per the below image.

Please verify the above schematics & provide any extra terminations to be provided?

  • 0
    TI__Genius 16845 points

    Here is some feedback on the schematic:

    • Assumed that LMK61E2 has the proper I2C pullup resistors
    • Consider using the recommended power supply filter from LMK61E2 datasheet section 10 (Power Supply Recommendations)
    • Figure 23 of CDCLVP1204 datasheet shows different values for the power supply decoupling but your filter looks OK.
    • I believe you intended to use the INP0/INN0 input pair of CDCLVP1204. The schematic above is showing that the non-inverting input of each input pair is being driven.
    • For this AC-coupled input configuration, connect the inputs to VAC_REF with 50ohm resistors as per CDCLVP1204 datasheet figure 13 (VBB = VAC_REF)

    Kind regards,
    Lane

  • 0 in reply to Lane Boyd
    Intellectual 530 points

    Hi Lane sir,

    Thanks for the feedback

    • Assumed that LMK61E2 has the proper I2C pullup resistors
      •  Yes, provided

    • Consider using the recommended power supply filter from LMK61E2 datasheet section 10 (Power Supply Recommendations)
      • Yes, provided
    • Figure 23 of CDCLVP1204 datasheet shows different values for the power supply decoupling but your filter looks OK.
      • Ok
    • I believe you intended to use the INP0/INN0 input pair of CDCLVP1204. The schematic above is showing that the non-inverting input of each input pair is being driven.
      • Yes, updated the schematics.
    • For this AC-coupled input configuration, connect the inputs to VAC_REF with 50ohm resistors as per CDCLVP1204 datasheet figure 13 (VBB = VAC_REF)
      • As per Figure 13, it is the output for CDCLVP1204, the same way i have connected the output.
      • At destination i am connecting TLK10031, for this any terminations at input side of TLK10031 to be used?? Please specify 

  • 0 in reply to guru sai
    TI__Genius 16845 points

    TLK10031 has an internal 100ohm on the REFCLK inputs, no external termination is required.

    Kind regards,
    Lane