How do I talk to another SPI device while waiting for the AD7190 !RDY pin to go low ?
I'm using an ADC and DAC on the same SPI bus.
I need to read the AD7190 and write to the DAC every ms.
The problem is that I have to hold ChipSelect low for the AD7190 while waiting for !RDY pin to go low (ie, conversion ready)
This effectively means I can't do anything else on the SPI bus while the ADC is converting.
Is there any way to get a valid reading from the AD7190 without holding CS low the whole time ?
Would a faster ADC be the answer ? Looking at the 7176 with higher sampling rate I can get a conversion much quicker meaning I won't have to wait too long for DOUT/!RDY