Other Parts Discussed in Thread: ADS8588S, TIDA-00834, REF6225, OPA2188, INA188
Hello,
i'm trying to figure out is there possibility to use ADS8598S in energy meter project with class 0.1.
After looking some of reference projects I've only found ADS8588S reference with 0.3% accuracy (TIDA-00834), but from calculating possible accuracy I should get more from this project. I'm thinking that my calculations are wrong for class 0.1 meter accuracy.
I'm planning to use ADS8598S ADC, OPA2188 as voltage buffers, INA188 as current transducer measure and reference voltage REF6225. Also i'm planning to do one time offset and gain calibration. My ADC device must be SAR ADC with simultaneous sampling because I need zero-latency readings.
Is there any chance to use this devices to get 0.1 class metering? I don't want to use 24-bit DeltaSigma, because Sinc5 gets 5 cycles delay. Or maybe use ADS8589H and do some oversampling or feed ADC inputs with prepared PWM signal and then do oversampling to increase resolution?