Post Go back to editing

issue with SPI COMMUNICATION WITH AD7173-8, controller ESP32

Category: Hardware
Product Number: AD7173-8

Hello everyone,

I am writing a driver to interface AD7173-8 to ESP32 Microcontroller. when I try to read the reset value of a particular register, it is giving different value.

here are the register reset values I tried to read 

the status register reset value as per the datasheet is 0x80. but the reset value I read is 0x81.

the ADCMODE  register reset value as per the datasheet is 0x2000. but the reset value I read is 0x201.

the IFMODE  register reset value as per the datasheet is 0x0000. but the reset value I read is 0x01.

please help to tackle this issue.

thank you



Moved & tagged
[edited by: emassa at 4:03 PM (GMT -5) on 2 Mar 2023]

Top Replies

    •  Analog Employees 
    •  Super User 
    in reply to SRISUS +1 verified

    HI  ,

    The ADC should be able to read +-2.5V. Note that the absolute input voltage of the ADC is AVSS-0.05 to AVDD1+0.05 for disabled input buffers and AVSS to AVDD1-1.1 for buffers enabled and ensure…