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HMC7044 is consuming 2.6-2.7 Watts

Question asked by vish1ram on Jun 5, 2017
Latest reply on Jun 8, 2017 by kpeker

HMC7044 is not responding to SPI on our custom made board.Please find the schematic attached.

 

All supplies are good(3.3V). Chip is almost consuming 2.7W of power which is worrying. Voltages measured on chip bypass pins: 

pin7: 1.26V (BGABYP1)

pin8: 1.8V(LDOBYP2)

pin9: 2.8V (LDOBYP3)

pin11: 2.24V(LDOBYP4)

pin12: 2.33V (LDOBYP5)

pin46:3V (LDOBYP6)

pin49:3V(LDOBYP7)

 

VCC2_OUT and VCC4_OUT are no connect pins. Can this cause an issue?

 

Kindly help us debug the problem.

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