CMD169P4 N/C pins connections

RF Solutions RF All Other (switches, controls, attenuators, ..)
1

Hi,
How should the NC pins of CMD169P4 be connected? In the Evaluation Board example in the datasheet pin 5 and 20 are NC, 23 and 24 to the DC header and the others to GND. Is there a reason behind this placement? Can I place all the pins to GND or leave them NC?

Thanks
Christian

2

Hello. Sometimes our EVB’s will ground the N/C pins which would be OK. The N/C pins have no internal connection. The pins that must be grounded are pins 1, 3, 16 and 18. The ground paddle should also be grounded with an array of vias. The EVB stack-up is 1 oz. copper on top and bottom with 0.010" thick Rogers 4350 dielectric. If you send an email to appsupport@qorvo.com we can get you the EVB .dxf file as it cannot be uploaded here.

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