ADS8588S: oversample

JerryL

Prodigy 210 points

Part Number: ADS8588S

Hello,

When ADS8588 oversampling is set to 4, want to check which of the following condition is true for each channel?

1, The sample and hold function only works once while digital conversion cycle 4 times.

2, Both S-H and Conversion work 4 times.

Regards,

Jelrry

over 8 years ago

0 Dale Li over 8 years ago

TI__Mastermind 45285 points

Hello Jerry,
Thanks for your query on E2E forum. It will execute 4 times internally but only need one CONVST_A/B active signal once.

Regards
Dale Li

0 JerryL over 8 years ago in reply to Dale Li

Prodigy 210 points

Hi Dale,

Can you please let me know if there must be a new S/H action finished before every conversion? Or just one time S/H action following by 4 digital conversion for oversampling set to 4. Thank you.

Regards,

Jerry

0 Dale Li over 8 years ago in reply to JerryL

TI__Mastermind 45285 points

Hi Jerry,

Only one CONVST_x pulse signal is needed, please refer to the OSR operation timing as below, ADC's internal digital circuit will handle whole oversampling process.

Thanks&regards

Dale

Data converters

Data converters forum

ADS8588S: oversample