I need a c band power amplifier( freq of operation 5.6GHz) with saturated power of 35dBm. Can you suggest me some power amplifier?
I suggest you consider the HMC7357:
Do you need a die or a packaged part?
What is the difference between these two?
A die is just a small piece of semiconductor material on which an integrated circuit has been fabricated and cut from a semiconductor wafer. You would not be able to solder a die to a PCB and make direct contact with the signal pads. You would instead need to attach the die to some type of substrate, then use wire bonds to make connections to the Vdd, RFIN, etc. pads.
A packaged part could be soldered to a PCB. The package would contain the semiconductor die as well as bond wires connecting die pads to package pins.
i need packaged one.
S parameter file is not available. Please provide it
Attached is an S2P file for unit that appears on the Gain & Return Loss plot from the data sheet.
This is an evaluation board level measurement, not de-embedded to the package pins...the best I have available at the moment.
If you use a text reader to open the .s2p file, you will be able to see test condition info in the header.
Is there any power amplifier of my specs with power down option?
The HMC7357LP5GE is our only product that meets both your frequency=5.6 GHz and Psat=+35 dBm specifications.
Since the drain current is a strong function of the gate bias, a power down function can be implemented via adjustment of the gate voltage to a sufficiently negative voltage, typically -2 V. For an 8 V drain supply, setting the gate voltage to -2 V will result in a drain current < 2 mA. In that state the RF gain and power output will be very low...like an amplifier that has been turned off.
Could you please give me information about the Vgg voltage of HMC7357LP5GE.
Particularly I am asking whether I have to supply voltage to Vgg1 (pin 23) at once with Vgg2 (pin 8) or I can supply voltage only to Vgg1 (pin 23) and leave Vgg2 (pin 8) just floating?
You can bias the amplifier by only using Vgg1 (pin23) .
One more question this time regarding the drain supply voltage.
Can I supply voltage only to Vdd1 and Vdd2 and leave Vdd3 and Vdd4 floating, and still have a proper operation, in other words to supply the amplifier only from one side of the chip?
I've posed your question to our Design group.
I will post the answer once it's been received.
Design has said that Vdd must be applied from both sides for the reason that it limits the current densities in the output stage to a safer level.
OK, thank you for the support!
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