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On Wednesday, 11 May 2022 at 00:10:19 UTC+1, John Larkin wrote:
https://menlomicro.com/
I looked at the data for the MM1200 â 6 Channel SPST Micro Relay
There do seem to be a lot of restrictions relating to hot switching and
floating nodes. The description \"ideal switch\" is perhaps going a bit far..
John Larkin wrote:
https://menlomicro.com/
I would find a lot of applications for those operating in the sub-mA/3V
range. Purchasable or \"I had a dream\" Silicon Valley startup vapourware?
Best regards, Piotr
A lot of MEMS relay companies have arrived with great expectations and
then quietly died. I\'ll wait for Digikey to have parts, and try some.
On Wednesday, 11 May 2022 at 00:10:19 UTC+1, John Larkin wrote:
https://menlomicro.com/
I looked at the data for the MM1200 â 6 Channel SPST Micro Relay
There do seem to be a lot of restrictions relating to hot switching and
floating nodes. The description \"ideal switch\" is perhaps going a bit far.
John
On Wednesday, May 11, 2022 at 5:01:36 AM UTC-4, John Walliker wrote:
On Wednesday, 11 May 2022 at 00:10:19 UTC+1, John Larkin wrote:
https://menlomicro.com/
I looked at the data for the MM1200 â 6 Channel SPST Micro Relay
There do seem to be a lot of restrictions relating to hot switching and
floating nodes. The description \"ideal switch\" is perhaps going a bit far.
One issue I would be concerned about is the fact that it actually consists of many relays connected in parallel. When they are opened, they can not be opened simultaneously, but rather open sequentially, even if very close together in time. This would tend to concentrate the current flowing until the last relay contact is opened, with all the current flowing through that one contact. I suppose this is limited by parasitic inductance and the consistency in timing of the contacts opening. If they all open at the same time to within a nanosecond, then I don\'t see much problem.
John Larkin wrote:
A lot of MEMS relay companies have arrived with great expectations and
then quietly died. I\'ll wait for Digikey to have parts, and try some.
So will I. One remark about the 6 SPST BGA: they require +79V external
supply.
On 12/05/2022 05:16, Piotr Wyderski wrote:
John Larkin wrote:
A lot of MEMS relay companies have arrived with great expectations and
then quietly died. I\'ll wait for Digikey to have parts, and try some.
So will I. One remark about the 6 SPST BGA: they require +79V external
supply.
Amusingly, 79V, not 77V and not 81V. Perhaps they only test it at one
voltage and so don\'t know whether the parts work at other voltages.
Amusingly, 79V, not 77V and not 81V. Perhaps they only test it at one
voltage and so don\'t know whether the parts work at other voltages.
Or worse, maybe it really cares.
jlarkin@highlandsniptechnology.com wrote:
Amusingly, 79V, not 77V and not 81V. Perhaps they only test it at one
voltage and so don\'t know whether the parts work at other voltages.
Or worse, maybe it really cares.
It likely does:
https://menlomicro.com/images/general/Menlo_MM1200_Preliminary_Datasheet_Rev1.2.pdf
78V min, 80V max. This accuracy requirement calls for a built-in boost
converter even stronger. It is not exactly trivial (in terms of part
count and board space) to provide such a power rail.
Best regards, Piotr
That tolerance makes the gadget sound really flakey. As mems relays
have historically been.
jlarkin@highlandsniptechnology.com wrote:
That tolerance makes the gadget sound really flakey. As mems relays
have historically been.
This one appears to exist:
https://www.analog.com/media/en/technical-documentation/data-sheets/adgm1304.pdf
And it has the charge pump. But just 7.2 years of continuous on lifetime?!
Best regards, Piotr