Hello Stas, TI does not have any single RMS to DC devices. The ADS7028 is a 1MSPS ADC that has a digital RMS math engine. However, since your waveform operates around 10kHz with pulse widths as low as 800ns, the ADS7028 will not accurately capture every pulse due to the sampling rate. The internal ADC on the TMS320F28P650DK processor ( LAUNCHXL-F28P65X development board) supports 12b up to 3.9MSPS. This ADC will accurately capture the PWM waveform, and if running an RMS calculation, since your will be using many samples, you will get a higher resolution result, similar to averaging multiple readings. The TMS320F28 MCU has plenty of processing power to do both RMS and average calculations using the internal ADC. If you want even higher reading resolution, then an ADC like the ADS9227 (16b, 5MSPS) with the TMS320F28 processor will provide a very high resolution result. Regards, Keith
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