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ADS1013: shortest read cycle (Single shot mode)

user6314417
Prodigy 30 points
Part Number: ADS1013

Hi team,

 

The voltage is read in about 3ms cycle in single shot mode of ADS1013. The sampling period is 1600 SPS.

It looks like we can read the voltage without any problems.

However, there is a description of " For example, an ADS101x in power-down state with a

data rate set to 3300 SPS can be operated by a microcontroller that instructs a single-shot conversion every 7.8

ms (128 SPS)" in Chapter 8.4.3 of the data sheet.

Is there any problem if the reading cycle is less than 7.8ms?

 

For some reasons, I want to use single-shot mode instead of Continuous Conversion mode.

Best regards,
YAMADA

  • 0
    TI__Guru* 92655 points

    Yamada-san,


    There is no problem running the read cycle less that 7.8ms.

    The section that you refer to (8.4.3) is called Duty Cycling for low power. In this section, we say that by running at a faster data rate, and then reading it back at a much lower data rate, that the device is on only for about 300us, and off for about 7.5ms. Because of this, the power consumption is significantly smaller than if you were to run the device continuously.

    Joseph Wu