The user inquires about the HMC952A's 4 gate voltages and 3 drain voltages, and how to power them. The final answer specifies that VDD can be 5V or 6V, and the gate voltage range is -3V to 0V. Accompanying answers seek clarification on whether VDD1 to VDD4 and Vgg1 to Vgg3 can be connected together and the power-up sequence, as well as the use of external op-amps on pin 12 and 13.
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