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The question about the chip ADS5482 and others

Other Parts Discussed in Thread: ADS5482, ADC3244

Hello!

I want to ask the question about  the chip ADS5482, 1. Does it have anti-noise ability? 2. Is there any requirement for the frequency stability of its external clock? If so, what is the required frequency stability?

3. In addition to this AD chip, does your company have a chip with an AD sampling rate of tens of KS/s to tens of MS/s and a sinusoidal external clock?

Thank you very much!

  • I do not follow what "anti-noise" is.  The ADS5482 achieves an ENOB of roughly 13 bits.  There is not a specific spec for clock frequency stability; however, ADC performance is dependent on phase noise performance of the clock.

    TI has many ADCs that support kSPS to MSPS to GSPS sample rates.  Generally speaking, the communication type ADCs (like the ADS5482) are 10 MSPS and higher.

    --RJH

  • Thank you very much.

    What I said, "anti-noise", refers to whether this chip has the ability to remove or reduce electrical noise, such as electrical glitches.

    In addition, I need a ADC chip that supports an external clock, and the frequency of the external clock is at kSPS to MSPS, not the sampling rate of ADC. I have searched for many ADC chips on the TI official website, but I couldn't find a ADC chirp that meets my requirements. Could you recommend me a ADC chip?

  • You can check out ADC3244.  It is low power and low noise operating with a 125 MSPS clock.  --RJH