HDC1008: Four HDC1008 on a PCB in linear arrangement

May

Part Number: HDC1008

HI Team,

I understand that this IC is NRND, just want to confirm, if I'm placing four HDC1008 on a PCB in linear arrangement, does this require a multilayer ceramic bypass X7R capacitor of
0.1μF between VDD and GND pins for every HDC1008?

Thank you.

Regards,
May

over 2 years ago

0 Eddie LaCost over 2 years ago

TI__Mastermind 44140 points

Hi May,

Yes, you should include the bypass capacitor for each IC. It is recommended to place this capacitor as close as possible to the VDD pin.

0 May over 2 years ago in reply to Eddie LaCost

TI__Genius 9880 points

Hi Eddie,

Thank you. The layout is attached, varying the address lines and putting that capacitor under the sensor. Still unsure about the mounting of the sensor on the PCB (and the footprint of the capacitor). Can you please check if this already good?

4456.PCB.pdf

Thank you!

Regards,
May

0 Eddie LaCost over 2 years ago in reply to May

TI__Mastermind 44140 points

Hi May,

In your attachment, it is only showing the topside of the PCB, so I am not able to see pads for the bypass capacitor. Otherwise, it looks okay.

Sensors

Sensors forum

HDC1008: Four HDC1008 on a PCB in linear arrangement