11
votes
4answers
843 views

Reason of multiple GND and VCC on an IC

What is the reason that most of ICs (e.g. MCU) has multiple (A/D)GND and (A)VCC pins? If it is to increase performance of an IC, how does it help to performance? or is it easier for the IC designer ...
7
votes
2answers
2k views

How do you properly ground a digital pot and an op-amp?

I'm going to take a 5V 500mA power supply and pass it through a digital potentiometer AD5235 and then step it up through an op-amp with a gain 2 to get up to 10V output and put that into voltage based ...
2
votes
4answers
4k views

Should NC-Pins of IC connected to ground through a resistor to prevent noise?

I wonder if unused pins of an IC, lets say an NE555 f.e., should be connected to ground via a resistor to prevent noise or not. I have an AVR with analog inputs and just realized there's huge noise, ...
3
votes
1answer
343 views

can pins 3 and 11 on the 556 timer use the same capacitor to ground?

can the control voltage pins 3 and 11 on the 556 timer use the same capacitor to ground? I assume that I can double the capacity of the 0.01\$\mu\$ capacitor to 0.02\$\mu\$ and share the capacitor ...