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[ADE7953] refer to input LSB calculation

Question asked by sofy Employee on Dec 20, 2016
Latest reply on Jan 19, 2017 by dlath

Hello,

According to ADE7953 datasheet page 21 "CURRENT CHANNEL ADCS" as below,

 

With the specified fullscale analog input of ±250 mV and a PGA_Ix gain setting of 2, the ADC produces its maximum output code. The ADC output swings between −6,500,000 LSBs (decimal) and +6,500,000 LSBs.

 

As below calculation is correct?

1) 1LSB=7.69E-8 V (0.5V/6,500,000LSBs)
2) 0.645V(7.69E-8V×8388607) when 0x7FFFFFLSBs

 

Thank you for your help in advance.

Sofy

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