ADC128S102: AC Electrical Characteristics

Randhir Kalsi

Expert 4545 points

Part Number: ADC128S102

Hello team,

Hope you are well. Would you be able to help out with below customer questions:

What does this specification mean from the datasheet?

8MHz is the minimum, but the typical is 0.8MHz? The max clock Freq is 16Mhz.

Thanks

over 9 years ago

0 ReedKacz over 9 years ago

TI__Expert 3687 points

Hello Randhir,

The ADC128S102 is tested down to 500kSPS to meet all specifications, thus 500kSPS is the minimum throughput spec. The part can operate down to 50kSPS but it is not tested at this low of a sampling rate.

The same answer applies to the SCLK frequency: since it is tested at 500kSPS then the SCLK minimum is 8MHz. But the part can operate at 50kSPS meaning the SCLK can decrease to 0.8MHz.

The specifications are worded in a slightly confusing manner but the ADC128S102 is tested down to 500kSPS (8MHz SLCK) but will also operate (not tested) at 50kSPS with a 0.8MHz SCLK.

Thank you,

Reed

0 Randhir Kalsi over 9 years ago in reply to ReedKacz

TI__Expert 4545 points

Thanks Reed

0 Randhir Kalsi over 9 years ago in reply to ReedKacz

TI__Expert 4545 points

Reed,
Can you help out with the follow-up question:
The part says that it is 500k to 1M samples so I think it is 8MHz as the minimum. Unless the samples is wrong too and it’s actually 50k samples?

0 ReedKacz over 9 years ago in reply to Randhir Kalsi

TI__Expert 3687 points

Please see updated answer above.

Thank you,
Reed

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ADC128S102: AC Electrical Characteristics