Experimental Research
Trace Resistance and Blow-Up Trace Experiment
In this experiment, you will learn the fundamentals of best measurement practices for DMM measurements of 2-wire and 4-wire resistance, as well as how to use a power supply with constant voltage and current as well as how to estimate the resistance of traces and then measure that resistance using the below board to compare it to your expectations.
Trace to Trace CrossTalk Experiment
To assess the cross talk between one or more aggressor signals that are switching at the same time and the noise introduced into a nearby victim signal return channel, you will investigate two possible geometries below as shown in the board. The signal path and the return path of any interconnect will be distinct from one another and identified. We examine the scaling of the switching noise with the quantity of concurrent switching signals. Additionally, we can examine the routing geometry in this lab that results in the least cross talk.
Ferrite Filter Experiment
The goal of this experiment was to learn about the function of a ferrite filter. The purpose a ferrite filter is to remove noise from the power rail that could interfere with sensitive analog equipment.When an inductor and a capacitor are connected in series, a resonant circuit is formed that can be adjusted to a given frequency. An LC circuit can be used as a bandpass filter that only allows frequencies close to its resonant frequency to pass through. It's important to note that reversing the orientation of the circuit, such as constructing a CL circuit, will not produce the intended output.
Inrush Current Experiment
In this experiment, you'll learn how to use a simple approach to measure the inrush current and steady-state current draw of a board from a power supply. A sensing resistor connected in series with the power rail is the fundamental technique. It does this by converting the current into a voltage that a scope can measure.
PDN Noise Measurement and Slammer Circuit
In this experiment, we will build a simple slammer circuit which will draw a fast transient current from the power rail. This is exactly what happens when an IC suddenly switches current as when it drives I/O signals, or the core logic consumes a lot of current to perform some computational operation, which happens on each clock edge.