I am having 2.8V on board regulator which is supply voltage to the EEPROM. Do I need to have tantalum capacitor near the EEPROM.

Can Anyone please help me with what happen if I replace tantalum capacitor with ceramic capacitor.

Thanks
rahul

 

hi Rahul,
Welcome to AAC.
Look thru this PDF, should help you decide.
E

 

Thanks Eric, Can you please help me when we should use tantalum and ceramic capacitor.

Thanks in advance

 

hi,
Where possible I prefer using tantalum caps for their small size and wide frequency range,

Look at this tech discussion.
https://www.eevblog.com/forum/proje...e-tantalum-capacitors-pros-cons-alternatives/

E

 

Hello,

You can also have a look at this thread:
Decoupling or Bypass Capacitors, Why?

Bertus

 

On my boards, each IC has a 100nF ceramic cap as close as I can put it, and then, "scattered" around the circuit, ther are 10uF tants.
Now, large (10uF) cermic caps are available, so place some of them there too.
Excess bypassing is better than not enough.
It may not be a scientific way to design, but my industrial control boards have proved to be very reliable.

 

Things may have improved, but tants used to be famous for blowing up when used as supply decoupling, even if the voltage rating wasn't exceeded. I'd also use a 100nF ceramic for each IC, or 1uF ceramic if the IC switches any power, then some 10uF or 100uF aluminium electrolytics. The higher esr of the aluminium electrolytics means that they work more like a snubber circuit and dissipate the interference signals in their resistance rather than just reflecting them around the circuit. They are particularly good at decoupling voltage regulators for that reason, like a zobel network on a power amplifier.