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Tool/software:
Hi!
I'm designing a new PCB for EMG/ECG acquisition using the ADS1292, and in my setup, this is the only device operated by a specific SPI master. I’m considering leaving the CS (chip select) pin permanently LOW since I’ll be using the ADS1292 in continuous conversion mode and only reading the data in a loop, without needing to send any additional configuration commands during operation.
From what I understand, this should be possible because I won’t be switching between multiple SPI devices. There's also a section in the datasheet that seems to suggest this could work:
Do you think it’s safe to leave the CS pin tied LOW? In my design, I’m using an isolator between the ADS1292 and the MCU, so minimizing the number of isolated signals is important. Fewer signals mean fewer isolator components, which is crucial since some types aren’t always readily available in the market.
Thanks for any insights!