ADS7961-Q1: sch review

Charles (KAT) Zhang

Intellectual 1595 points

Part Number: ADS7961-Q1

Tool/software:

Dear team,

Could you help to review customer ADS7961-Q1 sch?

ADS7961 SCH.pdf\

Thank you.

Charles

3 months ago

0 Joel Meraz 3 months ago

TI__Genius 14700 points

Hi Charles,

How fast will the device be sampling at? 47nF at each input seems excessive, and my concern is that the input signal won't settle fully to full resolution of the ADC. This is an 8-bit device, so it is very forgiving, but it would be good to verify. 4.7nF should be big enough to quickly replenish charge to the sampling capacitor.

1kohm input filter resistors also serve to prolong the input signal settling time. If you share the sampling speed I can analyze it quickly and suggest alternative values.

Regards,
Joel

0 liulu liulu 3 months ago in reply to Joel Meraz

Prodigy 80 points

Hi Meraz

Thank you for your reply;

Please help to check the connectivity of each pin of the chip. Because now the sampling rate of each channel may not be the same, we are not sure yet, but we can achieve this by adjusting the BOM,thanks.

0 Joel Meraz 3 months ago in reply to liulu liulu

TI__Genius 14700 points

Otherwise, the connection on the other pins of the device look good!

0 liulu liulu 3 months ago in reply to Joel Meraz

Prodigy 80 points

Thank you for your reply.

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ADS7961-Q1: sch review