ADS7865 Number of Simultaneous Sampling in Sequencer mode

Kazuhiko Ogawa

Other Parts Discussed in Thread: ADS7865

Hallo,

I have a question about the ADS7865.
Is it always only 2 channels the channels can simultaneous sampling in the Sequencer Mode 1 or 2 of Figure 33 and Figure 34 in the datasheet?
The sampling is 3 times sampling of clock1 and clock21 and clock41 in Figure 34. And two channels can simultaneously sample each on Conv A and Conv B and Conv C conversion timings.

Best Regards,
Kazu Ogawa

over 10 years ago

0 Tom Hendrick over 10 years ago

TI__Guru**** 181041 points

Hi Ogawa-san,
The ADS7865 has two sample and holds and two independent converters inside the package so it always simultaneously samples only two channels at a time. In Figure 34, sampling for the first conversion ("Conversion of Both CH1+") actually took place ahead of clock 1. Sampling for the second conversion ("Conversion of Both CH1-") takes place between clock 14 and 21. The final sampling happens between clocks 35 and 41.

0 Kazuhiko Ogawa over 10 years ago in reply to Tom Hendrick

Intellectual 985 points

Tom-san,

Thank you very much for your answer.

Best Regards,

Kazu Ogawa

Data converters

Data converters forum

ADS7865 Number of Simultaneous Sampling in Sequencer mode