seyyah
Advanced Member level 2
It's advised to connect an ADC's both AGnd and Dgnd pins to analog ground plane. What i wonder is is this also apply to reference inputs?
I have system that has a single 24V input and several outputs as shown in figure.
But I'm confused how to connect the grounds. I decoupled all outputs, they are connected at a point and as shown in figure. 5V analog, supplies analog circuits. 5V digital, supplies the digital circuits. 2.5V reference is the reference voltage input of the ADC (It's differential input). 10V reference supplies another circuit and that circuit's output is the input to the ADC. 12V also supplies other analog circuits.
I tried to separate the voltages to prevent sensitive circuits from being noise injected but ADC is a confusing part. What do you offer me?
I have system that has a single 24V input and several outputs as shown in figure.
But I'm confused how to connect the grounds. I decoupled all outputs, they are connected at a point and as shown in figure. 5V analog, supplies analog circuits. 5V digital, supplies the digital circuits. 2.5V reference is the reference voltage input of the ADC (It's differential input). 10V reference supplies another circuit and that circuit's output is the input to the ADC. 12V also supplies other analog circuits.
I tried to separate the voltages to prevent sensitive circuits from being noise injected but ADC is a confusing part. What do you offer me?