| Products > Test Equipment |
| > 1 GHz DIY differential probes |
| << < (18/35) > >> |
| Marco:
--- Quote from: Gerhard_dk4xp on October 21, 2018, 10:57:20 am ---Discontinued. --- End quote --- Such a shame too. Some of those Broadcomm pHEMT's go up to a transconductance of 2000 mS, there's nothing else like them in the discrete world. |
| nctnico:
--- Quote from: Marco on October 29, 2018, 12:58:06 pm --- --- Quote from: Gerhard_dk4xp on October 21, 2018, 10:57:20 am ---Discontinued. --- End quote --- Such a shame too. Some of those Broadcomm pHEMT's go up to a transconductance of 2000 mS, there's nothing else like them in the discrete world. --- End quote --- Off topic: IMHO it is a major PITA that Broadcom is killing all the nice RF parts from HP/Agilent/Avago. Also a lot of opto stuff is being discontinued. :wtf: |
| LapTop006:
--- Quote from: nctnico on October 29, 2018, 02:14:55 pm ---Off topic: IMHO it is a major PITA that Broadcom is killing all the nice RF parts from HP/Agilent/Avago. Also a lot of opto stuff is being discontinued. :wtf: --- End quote --- Given how hard it is to be able to purchase or even just get real datasheets for their parts that might actually be the better option, at least now a competitor knows they have a good chance at picking up customers. |
| Marco:
High GHz discrete RF is such a niche that probably no one will pick them up. CEL and Skyworks will probably keep producing their parts for a while, but those just don't compare to Broadcomm's as far as transconductance is concerned. I don't see them developing ones to rival Broadcomm's ... gone with the wind now. |
| nctnico:
Today I had some time to put a new board with the LMH3401 together. The differential impedance is 2k Ohm with a 1:20 attenuation. I'm contemplating having a 1:50 version with 5k Ohm differential input impedance but that is for later. Some initial testing shows promising results: This is with the input normal and reversed so it should give an idea on how good the common mode amplification is. I'll need to do a whole lot more testing but for that I need to finish the rest of the board first. This is just the amplifier (and 0402 decoupling capacitors) powered from a bench PSU. |
| Navigation |
| Message Index |
| Next page |
| Previous page |