We have chosen ADE7880 for Power quality meter application and doing schematic and layout. As per your datasheet Rev.C Table 7. Pin Function Descriptions PIN NO.1, 10, 11, 20,21, 30, 31, 40 - No Connect. Do not connect to these pins. These pins are not connected internally.
But Same datasheet (Page No:83) LAYOUT GUIDELINES Figure 114. ADE7880 Crystal and Capacitors Selection reference circuit NC pins 1, 10, 11, 20,21, 30, 31, 40 are connected to AGND and DGND
Please suggest me NC pins to be connect to GND OR no connect/open?
Thanks & Regards,