• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 47 subscribers
  • Views 372 views
  • Users 0 members are here
Support feedback
Options
Options
Related

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.

Original question:

ADS8866: Simultaneous Sampling using multiple ADCs in daisy chain

ADS8866: Data and clock pin output ringing

Gabriel Wang1
Genius 5005 points

Part Number: ADS8866
Other Parts Discussed in Thread: ADS8860

Dear Expert

We found that Pin 7 & Pin 8 data and clock output ringing . Could u give some advice about how to eliminate this ringing.

1.Pin 7 data waveform

2. pin8 clock  waveform

3. Schematic

  • 0
    TI__Guru 64765 points

    Hello,

    Adding a series termination resistor will help reduce the rise time and ringing on your waveforms.  The resistors should be roughly 22-33Ω in value and located near the driving source of the signal.  So the resistors should be close to the processor on SCLK, and CONVST, and near the ADS8860 on the DOUT signal.