A new-production BBD, with added features!

I received a few of these from CabinTech this week. I decided to use this as my first excuse to also try adding JLPCB's PCBA service, so I put together a small (17x27mm) PCB with the circuit and components from the SSI 2100's typical application circuit. I set this up to connect out to a parent circuit through a pin header.

I don't pay more than the lowest shipping option, so I expect it will take a few weeks for these to show up.

SSI2100 App Circuit.png
 
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gtfields13 said:
I received a few of these from CabinTech this week. I decided to use this as my first excuse to also try adding JLPCB's PCBA service, so I put together a small (17x27mm) PCB with the circuit and components from the SSI 2100's typical application circuit. I set this up to connect out to a parent circuit through a pin header.

I don't pay more than the lowest shipping option, so I expect it will take a few weeks for these to show up.

View attachment 109421
Click to expand...
Awesome. Looking forward to hearing your thoughts on the chip!
 
A set of these prototypes arrived yesterday while I was driving across the country. I think this is more of a "teaser" post. I am not going to have time to touch these for a while - the rest of life has decided to raise a crisis that takes priority...
 

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gtfields13 said:
A set of these prototypes arrived yesterday while I was driving across the country. I think this is more of a "teaser" post. I am not going to have time to touch these for a while - the rest of life has decided to raise a crisis that takes priority...
Click to expand...
Well - quick assessment is the SMD board is not functional. Pfft. I have signal and clock going into the SSI2100, but am not seeing anything come out.

I have a couple of leads to check - one possibility is my clock is not suitable (SA555P setup for 86kHz and 48% duty cycle). I think this should be working but am going to try out a CD4047 as clock alternative.

Alternatively, and a bigger issue, is the VTbias capacitor SMD I used may not be suitable for the SSI2100. In this case, the board design is the problem and would need to be reworked. I would also probably add a location for a gain capacitor on the board when I revise.

If the alternative clock doesn't work, I will probably have to mount up an SSI2100 onto a carrier board and breadboard out the whole circuit...
 
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