How do you use shielding to reduce noise and interference in sensitive analog sections of a circuit?

In sensitive analog circuit areas, shielding is a method for lowering noise and interference. It entails grounding a metallic shield or enclosure to the ground plane of the circuit and confining the delicate analog part inside. This shield can greatly enhance the circuit’s performance by protecting the delicate analog portion from outside noise sources.

Shielding to reduce noise | Analog Layout

There are several ways to use shielding in an analog circuit:

Place a steel cage or enclosure around the delicate analog section: This can be grounded to the ground plane of the circuit and made of metals like copper or aluminum.

Put a metal shield in front of each component: This can be grounded to the ground plane of the circuit and made of metals like copper or aluminum.

Circuit boards should have a metal layer: This could be a special shielding-only layer on the circuit board. It can be grounded to the ground plane of the circuit and formed of a metal like copper.

By using shielding in these ways, you can significantly reduce noise and interference in sensitive analog sections of a circuit and improve its performance.