PGA300: Power Consumption condition

Hi Ryuuichi,

The 2.5mA specification for the PGA300 is listed with no loading on the bridge and no loading on the DAC. There is also additional power consumed while programming the EEPROM. Can you please provide a little more detail on what it is that you are looking for with regards to 'Vpwr condition'?

Hello Tom-san,

>Can you please provide a little more detail on what it is that you are looking for with regards to 'Vpwr condition'?

I would like you to confirm Vcc condition.

According to datasheet, this device can accept from 3.3V to 30V.

Which Vcc voltage("PWR" pin) did you use to define 2.5mA ?

BR,

Hello Scott-san,

I have one additional question.

* Is there following data for power supply current ?

1. Is there any data when Vpwr(5V) fluctuate ?

2. Is there any data when ambient temperture fluctuate ?

3. Is there any data when ambient output fluctuate ?

I'm not sure how power supply current affect above three fluctuation, so if you can say there is little difference when above three fluctuation occur, it is OK.

Best Regards,

Hi Ryuuichi,

If I understand correctly, you would like to see a current vs. VPWR form say 3.3V to 30V. If we run normally at 5V, you might like to see a curve of 5Vpwr (I) vs Temp. We will check to see if such curves exist.

Hello Tom-san,

>you would like to see a current vs. VPWR form say 3.3V to 30V. If we run normally at 5V, you might like to see a curve of 5Vpwr (I) vs Temp.

Yes, this understanding is correct.

And also, if you have, please share data which is 5Vpwr(I) vs DAC output code(Or "OUT" voltage itself).

Thanks in advance,

Hello Tom-san,

Is there any update ?

Best Regards,

Hi Ryuuichhi,

Unfortunately, the specific curves you seek are not available. 5Vpwr(I) vs. DAC output code is not available, since the DAC was tested under no load conditions.

Hello Tom-san,

Thank you for your confirmation.

>5Vpwr(I) vs. DAC output code is not available, since the DAC was tested under no load conditions.

In other words, do you mean that "2.5 mA" can be applied for all of DAC output code in datasheet condition ?

Best Regards,

Under no load conditions, yes, that would be the case.

Hello Tom-san,

Thank you for your reply.
>Unfortunately, the specific curves you seek are not available.
Do you mean that you do not have following information ?

>you would like to see a current vs. VPWR form say 3.3V to 30V. If we run normally at 5V, you might like to see a curve of 5Vpwr (I) vs Temp.

Best Regards,

Correct, we did not characterize the part for every permutation of supply voltage.

Hello Tom-san,

Thank you for your reply.
>you would like to see a current vs. VPWR form say 3.3V to 30V.
I understood for above contents.

However, I would like you to confirm about below.
>If we run normally at 5V, you might like to see a curve of 5Vpwr (I) vs Temp.
According to datasheet, There is following description in 6.3 Recommended Operating Conditions.

* over operating ambient temperature range (unless otherwise noted)

From above, power supply current is evaluated from -40 to 150 degree because there is no "note" in "Ipwr" row.
Do you mean that Is "Ipwr" evaluated specific temperture ?

Best Regards,

Hi Ryuuichi,

For Section 6.3, the current is over the full temperature range, we just don't have a plot available.