ADS1256: ADS1256

Ponraj Tamil

Prodigy 190 points

Part Number: ADS1256

We are using ADS1256 chips. DOUT signal is not coming. Always this pin status is low.

over 3 years ago

0 Bryan Lizon86 over 3 years ago

TI__Guru 53986 points

Hi Ponraj Tamil,

What actions have you tried to troubleshoot this issue?

-Bryan

0 Ponraj Tamil over 3 years ago in reply to Bryan Lizon86

Prodigy 190 points

We are doing continuous reading data from ADS1256. Right now, we are using one differential channel. What step i need to follow?

0 Bryan Lizon86 over 3 years ago in reply to Ponraj Tamil

TI__Guru 53986 points

Hi Ponraj Tamil,

The ADS1256 datasheet provides all of the information you need to get the ADC setup and configured correctly so you can take data. Have you reviewed this document? If so, can you help me understand what steps you have taken thus far to get your ADC up and running as well as confirm that it is operating properly?

-Bryan

0 Ponraj Tamil over 3 years ago in reply to Bryan Lizon86

Prodigy 190 points

Below sequence are follow

1. IDLE_ST

2. ST_TX_ADCON

3.ST_TX_DRATE

4. IO_REG

5.MUX_REG

6.ST_RDATA_CMD

7. ST_RDATA

Now i get data from DOUT pin, but that i data is flatulate.

0 Bryan Lizon86 over 3 years ago in reply to Ponraj Tamil

TI__Guru 53986 points

Hi Ponraj Tamil,

Can you describe the issue you are seeing in more detail? Fluctuating ADC codes is not necessarily a bad thing, especially for high resolution ADCs like the ADS1256. This could be just the inherent ADC noise you are seeing. In fact, a constant ADC output code from a 24-bit ADC can mean that the device is not working correctly.

Again, please provide more details regarding what your issue is, and what steps you have taken to troubleshoot it.

-Bryan

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ADS1256: ADS1256