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ADS124S08: Internal temperature sensor issue

Dimas Ramalho
Prodigy 30 points

Part Number: ADS124S08

Hello,

I'm trying to use internal temperature sensor. So I configure gain to 2 and SYS_MON tp 010 but the conversion result was 0x93b that means about 90 mV from sensor. Electrical characteristics section shows that at 25°C sensor output 190 mV. So ambiente temperature must be negative, but I´m in Brazil at about 28°C. I have already performed the self offset adjust. Could you help me? (dimas.ramalho@microsad.com.br)

  • 0
    TI__Guru** 113765 points

    Hi Dimas,

    Welcome to the E2E forum! What reference are you using in your configuration?  Usually it is best to use the internal reference when using the system monitor.  Have you verified your communication with an oscilloscope or logic analyzer?  If so, can you send me shots of the communication?  Also it would be helpful to know all the device configuration register settings and the schematic.

    The most common issues with communication is using the wrong phase of the SCLK and not holding CS low throughout the entire communication transaction.

    Best regards,

    Bob B