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ADS1262: How to Read the Multiple Channal in using MUX ?

minsu jung
Prodigy 10 points
Part Number: ADS1262

I want to Read the Multiple channel. 

I want to Read  the 100 sample / CH.

Input is three.

1 INPUT: AIN0,AIN1

2 INPUT: AIN2,AIN3

3 INPUT: AIN4,AIN5

I think so..

1. RESET/PWDN high

2. Write Register ( MODE: Pulse Conversion(one shot conversion) / DELAY 0us / FILTER Sinc1 / GPA 1 / Data Rate 100 SPS)

3. Write Register ( MUXP AIN0, MUXN AIN1)

4. START pin high

5. Wait Low /DRDY

6. RDATA1

7. START pin low

8. Write Register ( MUXP AIN2, MUXN AIN3)

9. START pin high

10. Wait Low /DRDY

11. RDATA1

12. START pin low

13. Write Register ( MUXP AIN2, MUXN AIN3)

14. START pin high

15. Wait Low /DRDY

16. RDATA1

17. START pin low

loop continue... 

( MUXP AIN0, MUXN AIN1) -> ( MUXP AIN2, MUXN AIN3) -> ( MUXP AIN4, MUXN AIN5) -> ( MUXP AIN0, MUXN AIN1)

Is that right? Please, Help me. 

  • 0
    TI__Guru** 113765 points

    Hi Minsu,

    Welcome to the E2E forum! The basic process as described will work, however it is not required that you set START high/low.  I would suggest just leaving the START pin high all of the time for continuous conversions.  When you change the mux settings, the digital filter will reset and restart the conversion automatically following the register write.  The next transition from high to low on DRDY will signal that the conversion has completed and is ready to be read from the ADS1262 for the new mux setting.

    Best regards,

    Bob B