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Paralleling capacitors means the net value is the sum total so 4x 100 nF capacitors in parallel means the net capacitance is 400 nF. If the capacitors are in series then the net capacitance would be …

What is the correct way of placing decoupling capacitors? Rule 1 - as close to the chip's pins as physically possible. Rule 2 - Keep ground plane vias from the decoupling cap pins as close as po …

The 300nF cap you believe you need is in fact 330nF (standard part) and this is probably a minimum recommendation so choose 4 x 100nF. Despite this, Fairchild (in their spec) indicate that Ci is 100nF …

If you are using something inferior to a PCB like a breadboard then the decoupler(s) should go across pins 19 and 20 with pin 8 connected to pin 19 using a short wire. If using a single sided PCB the …

according to the datasheet of the MCP73871, I should be adding a capacitor of 4.7uF at the output If you read the data sheet for the MCP73871 on page 17 it says this: - Bypass to VSS with a …

For example, which of the three examples below would be best, or if there is in general ideal ways and conventions on how to connect a decoupling capacitor in this case. The left circuit is best bec …

C2 is used to decouple pin 28 and C3 is used to decouple pin 22 (or vice versa): - See also the Allegro data sheet for the A4988 driver; it shows the capacitors as C7 and C9: -

Ok, ignoring your esd issue. Use the scope for sure and a high frequency signal generator capable of delivering up to 1GHz sourced from 50 ohms. It probably would be better with a spectrum analyser t …

If the decoupling capacitor specified for chip A is the same value as the decoupling capacitor specified for chip B then this should be OK but be aware that if different coupling capacitors are specif …

It all depends on what the rest of the circuit uses and how good the "other" devices are at dealing with inevitable power supply noise. As an example, here's the graph of power-supply-rejection for a …

The Silego device has a MOSFET switch that has an on-resistance of typically 50 mΩ whereas the Dialog part has an on-resistance of typically 5.1 mΩ. The operating maximum currents are also different; …

The data sheet states this: - These capacitors should be placed close to the driver to minimized circuit board parasitics and provide a local source for the required current. It also says this: - L …

It's worth mentioning that on some occasions, the current taken down a relatively long PCB track can cause "other" chips to receive interference i.e. the main chip that takes the big surges might stil …

The closest cap is inevitably always the smallest because the smallest cap will have the lowest/best capacitive reactance at the high frequencies where the chip supplier needs that decoupling: - Th …

Basically, any capacitor has a little bit of series inductance. This makes it series resonate at some fairly high frequency and up to that frequency the capacitor behaves like you would expect but, hi …