Author Topic: Wanted: Source of genuine MB510 prescaler or drop in sub  (Read 597 times)

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Offline james_s

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Wanted: Source of genuine MB510 prescaler or drop in sub
« on: May 17, 2020, 10:17:49 pm »
I built a clone of the prescaler option for my 53131A. Unfortunately I realized once the last of the parts I needed finally got here that the MB510 I bought seems to be a fake, it's a narrower SO8 than the correct part and installed on the board I see a signal going into it but nothing coming out. It's an obsolete IC so not a lot of options other than various China sellers, anyone know of one who sells the real deal or a more readily attainable modern replacement?
 

Offline coromonadalix

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Re: Wanted: Source of genuine MB510 prescaler or drop in sub
« Reply #1 on: May 18, 2020, 04:17:32 am »
IF i recal this one LMX5080   is supposed to do the same thing,   not sure about the availability ?

http://pdf.dzsc.com/LMX/LMX5080_1233914.pdf


Not sure if this one sells genuine ones   ?
https://www.utsource.net/sch/LMX5080M

https://www.utsource.net/sch/mb510

Maybe this one too ?
https://www.psemi.com/pdf/datasheets/PE83342ds.pdf
« Last Edit: May 18, 2020, 04:27:36 am by coromonadalix »
 

Offline james_s

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Re: Wanted: Source of genuine MB510 prescaler or drop in sub
« Reply #2 on: May 18, 2020, 06:32:23 am »
UTSource is a mixed bag.

I'm really hoping to find someone who can say "Yeah I bought one of these from this seller and it worked" rather than taking a gamble on a part that maybe does the same thing from a seller that may or may not be selling the real deal. It's not a lot of money but it's a big waste of time when I end up with something fake. I already spent an hour troubleshooting before I realized it had to be a fake IC, everything going in looked just fine but none of the pins were doing anything like I'd expect.
 

Offline Jwalling

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Jay

System error. Strike any user to continue.
 
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Offline coromonadalix

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Re: Wanted: Source of genuine MB510 prescaler or drop in sub
« Reply #4 on: May 18, 2020, 01:41:17 pm »
only 3 left ?   thats a gamble to take ...   :-//

There was some already made prescaler boards sold on Ebay ? i think i saw something going up to 3 ghz or maybe 6 ghz ??

https://www.ebay.com/itm/3GHz-Prescaler-for-HP-Agilent-53131A-53132A-53181A-freq-counters-HPO-030-S/333197247591?
https://www.ebay.com/itm/HP-Agilent-53131A-52181A-53132A-Clone-Option-030-3GHz-Frequency-Counter/181866472102?
« Last Edit: May 18, 2020, 01:49:06 pm by coromonadalix »
 

Offline bartver

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Re: Wanted: Source of genuine MB510 prescaler or drop in sub
« Reply #5 on: May 18, 2020, 02:01:36 pm »
I'm using the MC12079 from NXP/Motorola in my design.
It's pincompatible with the MB510, only the ratio's differ a bit (64/128/256 vs the MB510 128/144/256/272)

regards,
Bart
 
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Offline ni.st

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Re: Wanted: Source of genuine MB510 prescaler or drop in sub
« Reply #6 on: May 23, 2020, 09:54:44 am »
I have bought 2 MB510 from the link below on ebay. They are most likely salvaged parts, because the legs are tinned. Nevertheless they are working fine in my opt. 030 clone.

https://www.ebay.com/itm/2PCS-MB510-MB510PF-G-BND-SOP8-5-2MM/372247349059

Another option could be to use the prescaler section from a syntesizer like the ADF4106, which can also be set to /128.

 
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Offline artag

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Re: Wanted: Source of genuine MB510 prescaler or drop in sub
« Reply #7 on: May 23, 2020, 10:46:42 am »
I've seen the readymade opt 030 clones - is there a DIY design out there or have you built it from scratch ?
 

Offline james_s

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Re: Wanted: Source of genuine MB510 prescaler or drop in sub
« Reply #8 on: May 23, 2020, 10:48:07 pm »
 

Offline artag

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Re: Wanted: Source of genuine MB510 prescaler or drop in sub
« Reply #9 on: May 25, 2020, 01:09:34 pm »
Thanks, I'm tempted to try that. Not sure if it will work out cheaper than the Romanian guy on ebay who I think does a very decent implementation, by the time I've found all the bits.

Does that version self-oscillate when there's no input ? Something I always found irritating on the board I built for my Philips counter.
 
 

Offline ni.st

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Re: Wanted: Source of genuine MB510 prescaler or drop in sub
« Reply #10 on: May 25, 2020, 01:43:30 pm »
The opt 30 from circuitvalley is actually a 1:1 clone, therefore it shouldn't oscillate.

You can compare the schematic and layout from the github repo (https://github.com/circuitvalley/agilent_53131A_53132A_options/tree/master/3Ghz_option) to the Agilent Component Level Information (p. 7 ff http://literature.cdn.keysight.com/litweb/pdf/5989-6308EN.pdf)

 

Offline RoadRunner

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Re: Wanted: Source of genuine MB510 prescaler or drop in sub
« Reply #11 on: May 25, 2020, 03:57:52 pm »
Thanks, I'm tempted to try that. Not sure if it will work out cheaper than the Romanian guy on ebay who I think does a very decent implementation, by the time I've found all the bits.

Does that version self-oscillate when there's no input ? Something I always found irritating on the board I built for my Philips counter.

I am maker of the design at circuitvalley.com as pointed out by ther member, I have only change zener to a proper LDO , other than that it 1:1 clone, I basically made it for my own instrument , With good quality components and high quality BNC to MCX cable from amphnol. I did sell few of them. Blank PCB is also available.
If you any one feel in need of this option please drop in a message, Special offer for forum member.

Regards
« Last Edit: May 25, 2020, 04:47:24 pm by RoadRunner »
 

Offline Jackob

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Re: Wanted: Source of genuine MB510 prescaler or drop in sub
« Reply #12 on: May 26, 2020, 07:22:30 am »
RoadRunner - an off the topic question - what is the type and vendor of the four grounding posts you used in the corners of the prescaler pcb?

Br, Jackob
 

Offline RoadRunner

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Re: Wanted: Source of genuine MB510 prescaler or drop in sub
« Reply #13 on: May 26, 2020, 08:57:47 am »
These are Steel Stnadoff from W├╝rth Electronic, They are M3 8mm. Only 8mm Will Fit as low clearance with other connectors.  Extact part number 9774080360R . Cost around 1,6 EUR each but quality seems to be worth it.

https://www.we-online.de/katalog/de/SMSI_SMT_STEEL_SPACER_M3_THREAD_INTERNAL/

« Last Edit: May 26, 2020, 10:59:14 am by RoadRunner »
 

Offline Jackob

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Re: Wanted: Source of genuine MB510 prescaler or drop in sub
« Reply #14 on: May 26, 2020, 01:30:31 pm »
Very good; thanks for the good info RoadRunner.

Br, Jackob
 

Offline james_s

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Re: Wanted: Source of genuine MB510 prescaler or drop in sub
« Reply #15 on: May 27, 2020, 05:34:01 am »
Those standoffs are indeed very nice, Digikey had them in stock.

I have a few extra PCBs here too but it's not going to be worth sending them outside the USA.
 


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