Looking for datasheet/info on Agilent/keysight/HP 5086-7653 preamplifier - Page 1
Forum section: electronics / projects

author: nexus
author_rank: Regular Contributor
timestamp: December 28, 2021, 09:36:02 pm
content: Hi all,Trying to dig up some info on this part. The part # is 5086-7653, which is still active in Keysight's part database.https://www.keysight.com/my/partDetail/5086-7653Only problem is, the part itself has no markings and there is 0 documentation (at least that I could find). At the minimum, the operating/bias voltages for this amp module would be the minimum necessary info. The rest could be figured out with a network analyzer.Anything would be appreciated. According to the parts ID website, this amplifier was used in the following products:84125C Microwave EMI Measurement System, 1 to 40 GHz85301B Antenna and Amplifier Radar Cross-Section Measurement SystemN5260A Millimeter-Wave ControllerI've searched through all the available docs on these products and not a single one of them mention this amplifier

author: nexus
author_rank: Regular Contributor
timestamp: January 01, 2022, 07:17:16 am
content: Bump

author: nexus
author_rank: Regular Contributor
timestamp: January 07, 2022, 02:22:45 am
content: Emailed Keysight asking about it; applications engineer said that they do not have any tech documentation regarding p/n: 5086-7653The only other product I would investigate is the Agilent 83051A or 83050A amplifier modules. This part could possible be used in it, but I cannot find any pictures or documents of one with the cover open.Does anyone have an 83051A or 83050A amplifier module that they could open and take a pic of inside the case?

author: suj
author_rank: Regular Contributor
timestamp: January 07, 2022, 03:14:15 pm
content: My first guess was that 3x HMMC-5025/TC900/1GG6-8000 were used here, but I'm confused about the number of bias circuits. Maybe not all of them are used? It would be best to open the box and under a microscope see what components were used. I recognize some TWAs by the shape of the structure, but usually with HP/Agilent/Keysight it has a marking on the structure. In this case it would be the TC900. The DS for this TWA can be found on the web. Don't look at the fact that this TWA has a lower band in the DS starting at 2 GHz. It has extra leads on the structure and there are ANs describing how to widen the bandwidth from below. Even up to kHz.

author: Benta
author_rank: Super Contributor
timestamp: January 07, 2022, 09:44:57 pm
content: @nexus:I cannot offer much hope. Parts like these are so exotic, that only a handful of customers ever existed. In that case, no commercial data sheet has been created (would make no sense).The HP design/application engineers would have worked directly with the small number of customers involved.Schematics and design files exist, of course, but are either only internal to HP or under non-disclosure agreements at the customers.

author: IW1EPY
author_rank: Newbie
timestamp: June 07, 2024, 07:15:02 am
content: i have made a reverse eng. of the parts this the result.now i am trying to polarize but i discover that the 2.4 out is lined to the drain of the last amplifier .. first the inductance that i have drown is not correct (my piece have a ball of glue at the output that make impossible a correct reverse eng.can someone measure if in your part the output is connected tothe drain.thanks