didac
Senior Member
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There's a million ways to see the things in life
Posts: 247
manresa,spain
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Hi, If it's just a test chip and you have free pins you can put the buffer in the die with an independent power pin(I suppose that your concern about not putting the buffer it's due to the power consumption that will "mask" the IF circuits power consumption), if you don't have free pins for the power supply of the buffer one solution could be to perform a differential measurement of the power consumption, first you turn off all the biasing voltages of the IF circuits and measure the current at the power pin(this current will be all consumed by the buffer) then you start sweeping the bias voltages until the increased current equals to your expected consumption, one problem on this method is that you must "compensate" the losses introduced by the buffer by hand so it's a good method if you can test the buffer indepently to characterize it. PS:I confirm that picoprobe continue to do custom work(in my opinion with good quality),but also expect a few weeks of delay while they manufacture and send the items so plan with anticipation(depending on which part of the world are you living now). PS2:for the equipment question which measurements are you planning to do?, I think the basics are a Signal analyzer,a calibrated noise source, an arbitrary waveform generator,precision voltage sources,precision multimeters, baluns if you ghave a differential topology...
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