ADS42LB49 Unused pin processing

cafain

Other Parts Discussed in Thread: ADS42LB49

Hi,

ADS42LB49 Unused pin processing

In the dual channel ADC, for example when B-ch is not used,
Analog input terminals (INBP, INBM) of Bch, and
Digital Output terminal (DBxP, DBxM, DBCLKP, DBCLKM, DBFRAMEP, DBFRAMEM, OVRB)
What kind of processing (Open or Short) is recommended?

Best regards,

over 8 years ago

0 jim s over 8 years ago

TI__Guru* 91947 points

Cafain,

Analog inputs of unused channel should be shorted through a cap to ground.

It is OK to leave the unused digital outputs unconnected.

Regards,

Jim

0 cafain over 8 years ago in reply to jim s

Mastermind 6765 points

Hi, Jim-san

Thank you for your immediate response

How mache value is capasitance?
(0.1uF, 10pF or 1uF?)

best regards

Cafain

0 jim s over 8 years ago in reply to cafain

TI__Guru* 91947 points

Cafain,

0.1uF should be fine.

Regards,

Jim

0 cafain over 8 years ago in reply to jim s

Mastermind 6765 points

Jim san

I appreciate your answer.

We will proceed with the design.

Thank you.

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ADS42LB49 Unused pin processing