Re: ADE7753 Waveform problem - LSB is 0x00 when HPF is OFF

Hi Dlath

Thanks for your reply.

I’m not sure that I understand, what did you mean. Can you explain more detailed?

In my case (I measure 5V USB via PICkit by resistor divider 1:76, the signal is some noisy, so I citedapproximate values)

CH1 with HPF OFF:   0x06AA00

CH2:   0x0006AA  (it approximately corresponds to physical level voltage 5 / 76 / 2.4 * 2^16 = 1796 = 0x704)

CH1 with HPF ON:   from 0xFFFA10 to 0x0040AA (it approximately corresponds to noise amplitude by CH2)

CH1 with HPF OFF and with GAIN = 0x14 (max amplification of CH1: PGA=16, Ref. Voltage = 0.125V) resulted value is 0x400000 and not changed. Of course it means overflow (0x06AA00 * 0x10 * 0x4 = 0x1AA8000) but why this value exactly?

Regards