Check stability of ADC conversion scheme

stfc-aeg / odin-lpdpower

Prototype of ODIN framework

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Check stability of ADC conversion scheme #26

Closed timcnicholls closed 7 years ago

timcnicholls commented 7 years ago

The AD7998 conversion mechanism in the PSCU classes appears to produce values that are dependent on the order and timing of channel conversion - needs investigation

timcnicholls commented 7 years ago

Conversion mechanism is OK - differences are due to interaction between the analogue circuits driving ADC inputs (in particular the set point inputs) and the input capacitance of the AD7998, leading to charging effects and voltage fluctuations depending on order channels are read.