Chimmuanya Okere Comments - Answer Overflow

Chimmuanya Okere

•Created by Chimmuanya Okere on 4/2/2024 in #pcb-and-analog

When should I use PCB HDI in my board design?

Thanks, that means the more the pins the higher the stackup layer. And it's adviceable to use HDI if the pins are very small

6 replies

DIIDevHeads IoT Integration Server

•Created by Chimmuanya Okere on 3/31/2024 in #pcb-and-analog

How many layers should I use in my PCB design?

great, how about for microcontroller based design that require controlled impedence which should i use 2 or 4 layers

8 replies

DIIDevHeads IoT Integration Server

•Created by Navadeep on 3/28/2024 in #devheads-feed

STM32U0: The latest generation of entry level ultra-low power MCUs

@techielew Yes I did, this it quite amazing, this family of MCU have reached peripheral sets and is used in a vast number of applications.

4 replies

DIIDevHeads IoT Integration Server

•Created by Chimmuanya Okere on 3/26/2024 in #pcb-and-analog

Unmatched Controlled impedence signal

If you use a matching circuit of 50 ohms e.g you have a resistor capacitor network that has an impedence of 50 ohms, is it still necessary to have a trace of 50 ohms impedence

15 replies

DIIDevHeads IoT Integration Server

•Created by Chimmuanya Okere on 3/26/2024 in #pcb-and-analog

Unmatched Controlled impedence signal

How about using a matching circuit if 50 ohms than a trace, how will that work

15 replies

DIIDevHeads IoT Integration Server

•Created by Chimmuanya Okere on 3/26/2024 in #pcb-and-analog

Unmatched Controlled impedence signal

I didn't consider not using it, just wanted to know the effect of not using it

15 replies

DIIDevHeads IoT Integration Server

•Created by Chimmuanya Okere on 3/26/2024 in #pcb-and-analog

Unmatched Controlled impedence signal

Am trying to match my trace for a cellular with an SMA connector, and they said in the datasheet it should be 50 ohms impedence. Am just trying to confirm the effect of not using a 50 ohms trace for that particular part. Using SIM7080G from SIMCOM

15 replies

DIIDevHeads IoT Integration Server

•Created by Chimmuanya Okere on 3/28/2024 in #pcb-and-analog

Should I use a resistor voltage divider or dedicated voltage IC?

Planning on using a voltage divider because it will save cost, which is more reasonable to use and why. @pallavaggarwal @Petr Dvořák

5 replies

DIIDevHeads IoT Integration Server

•Created by Chimmuanya Okere on 3/26/2024 in #pcb-and-analog

Unmatched Controlled impedence signal

Thanks for the insight

15 replies

DIIDevHeads IoT Integration Server