Tool/software:
Hello,
I am working on a custom breakout board using the ADS1298, and I am facing an issue at startup. When I power the board with ±5V and set CLKSEL HIGH as well as START HIGH, I expect to see a signal on CLK or DRDY, but I observe nothing. It seems like the chip is completely inactive.
I have attached my schematic for reference.
Here are the key points I have checked:
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Power supply is correct (+5V and -5V properly present on VCAP1, AVDD, and AVSS)
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START is HIGH
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CLKSEL is HIGH (so I assume the internal oscillator should be enabled)
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MOSI, MISO, SCLK, and CS are not connected yet (testing without SPI for now)
I was expecting at least some activity on DRDY or SCLK, but all pins remain inactive.
Do you have any idea what could be wrong? Did I miss a critical initialization step?
Thanks in advance for your help!