CS pin of ADS8365

Kuramochi Tadahiko

Other Parts Discussed in Thread: ADS8365, ADS8364, ADS8568

HI,

When I watch the Figure 1(attached file) at the datasheet of ADS8365, it is written that CS line is pulled down at CONVERSION TIME.

Is it necessary to pull down CS at CONVERSION TIME?

If it is necessary, why is it necessary?

Regards,

Kuramochi

over 11 years ago

0 Tom Hendrick over 11 years ago

TI__Guru**** 181791 points

Hi Kuramochi-san,

On the ADS8364 and ADS8365, there is no requirement to have /CS low while the HOLDx signal(s) are being applied. You do need to take /CS low while reading the conversion results though.

0 Kuramochi Tadahiko over 11 years ago in reply to Tom Hendrick

Guru 28715 points

Hi, Tom-san,

Thank you for reply.

I satisfied.

But, why is CS pulled down at this figure?

Kuramochi

0 Tom Hendrick over 11 years ago in reply to Kuramochi Tadahiko

TI__Guru**** 181791 points

Hi Kuramochi-san,

Actually that is probably because of the way I implemented the software control of the ADS8568. I used one of our TMS320 series DSP's and used the /WR strobe through an address decoder to generate the HOLDx inputs. This also caused the /CS to go active.

0 Kuramochi Tadahiko over 11 years ago in reply to Tom Hendrick

Guru 28715 points

Tom-san,

Thank you for your answer.

I understood.

Best Regards,

Kuramochi

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CS pin of ADS8365