ADS7142-Q1: IAVDD SPEC

Hidekazu Someno

Part Number: ADS7142-Q1

Hi team,

I would like to confirm the specification on datasheet.

There are the following IAVDD specifications in 6.7(Autonomous Modes) & 6.8(High Precision Mode) tables.

Q1: Though the parameter been specified as 940uA_typ in 6.7(Autonomous Modes) has the test conditions of “low-power oscillator, nCLK=21”,

Is this condition correct? Is the correct condition “High-speed oscillator, NCLK=21?

Q2: Compared to the case of low-power oscillator(<1uA), the IAVDD current using high speed oscillator is about >1000 times larger.

What is the main reason for this large current difference?

Regards,

H.Someno

0 Cynthia over 5 years ago

Hello,

Thanks for pointing this out

Let me confirm this. If it is a mistake, we will make a note to update this.

Regards

Cynthia

0 Hidekazu Someno over 5 years ago in reply to Cynthia

Cynthia,

Could you check it?

Please tell me the result?

Regards,

H.Someno

0 Cynthia over 5 years ago in reply to Hidekazu Someno

Thank you for your patience.

It seems you have found an error in the datasheet, we have noted this and will update.

In Autonomous mode IAVDD is specified for high-speed oscillator (nCLK = 21).

For the second question, the difference between the low-power (nCLK = 250) and high-speed (nCLK = 21) is nearly 1000x because:

Regards

Cynthia

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