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ADXRS453 Q-bit error

Question asked by irvinp on Oct 2, 2014
Latest reply on Oct 7, 2014 by neilzhao


I have 3 ADXRS453 sensors on a custom PCB that are all reporting a Q-bit error during the start up test. I have implemented the circuit as in Figure 25 and 26 from the datasheet for the SOIC and LCC package respectively. I checked the input of each pin in my circuit and have found that pin CP5 is reading 14.5V, I believe it should be at 22V, is this correct? Are there any likely causes for this issue? I have rechecked the circuit and it is identical to the suggested implementation and I am using an input voltage of 3.3V. I also have some eval kits for the ADXRS453 and when I power them from the PCB they report no errors and start properly. Any help or advice would be appreciated.

Thanks, Patrick