Thank you for your reply.
I verify that the ODR properly set. The frequency of DRDY signal is 500 Hz.
The SRC_LOAD_UPDATE bit has been cleared, but MEMMAP_CRC_ERR still occurs.
All other functions except MEMMAP_CRC_ERR seem normal.
I was wondering the reason for the asked, are you trying to measure it and came up with different results? Or you are just really wanted to know the equations behind THD and SFDR?
I think the spec is based on the actual test/eval performance results…
Did you solve this problem?
I have a same question too.
Please give me a clue...
ad7779 的Gain Drift是多少？中文手册与英文不一样。
Apologies. I know this is long overdue. However if in case still necessary or someone may have similar issue. I recommend to check this similar thread.
I'm using multiple AD7779s in a measurement system. Currently I'm using Pin Config mode but need to use SPI mode in order to access some of the deeper configuration parameters. Ideally I want to use SPI to configure the device(s) and then collect…
While planning to use the internal reference of the AD7779, I left unconnected the REFx+ and REFOUT pins (and connected the REFx- to AVSS). Tha ADC looks to works fine, but i experience a very large level of input refered noise.
Looking back to the datasheet…
Please show me step by step how to calculate the temperature ADC7779 in celsius degrees.
When i read register CH0_ERR_REG,i found that:
a、CH0-AINP undervoltage error,CH0-AINM undervoltage error，how can i deal these errors？