Differential pair routing basics in PCB Design - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a differential pair net in the PCB design software.

PCB Design

differential_pair = create_net('[1]')

Drag options to blanks, or click blank then click option'

ASIGNAL_NET

BGROUND_NET

CPOWER_NET

DDP_NET

Attempts:

3 left

💡 Hint

Common Mistakes

Using SIGNAL_NET instead of a differential pair net name.

Confusing power or ground nets with differential pairs.

The differential pair net is typically defined with a specific net name like DP_NET to distinguish it from other nets.

2fill in blank

medium

Complete the code to set the trace width for differential pair routing.

PCB Design

set_trace_width(differential_pair, [1])

Drag options to blanks, or click blank then click option'

A0.2

B0.5

C0.1

D1.0

Attempts:

3 left

💡 Hint

Common Mistakes

Setting trace width too wide, causing impedance mismatch.

Using trace widths typical for power traces.

A typical trace width for differential pairs is around 0.2 mm to maintain impedance control.

3fill in blank

hard

Fix the error in the code to correctly set the spacing between differential pair traces.

PCB Design

set_spacing(differential_pair, [1])

Drag options to blanks, or click blank then click option'

A0.5

B1.0

C0.3

D0.1

Attempts:

3 left

💡 Hint

Common Mistakes

Using spacing values that are too large or too small.

Confusing trace width with spacing.

The spacing between differential pair traces is typically around 0.3 mm to maintain the correct differential impedance.

4fill in blank

hard

Fill both blanks to correctly create and route a differential pair with controlled impedance.

PCB Design

diff_pair = create_net('[1]')
route_diff_pair(diff_pair, trace_width=[2])

Drag options to blanks, or click blank then click option'

ADP_NET

B0.2

C0.5

DSIGNAL_NET

Attempts:

3 left

💡 Hint

Common Mistakes

Using SIGNAL_NET instead of DP_NET.

Choosing too wide a trace width.

Use DP_NET to define the differential pair net and 0.2 mm as the trace width for controlled impedance routing.

5fill in blank

hard

Fill all three blanks to define a differential pair net, set trace width, and set spacing for proper routing.

PCB Design

diff_net = create_net('[1]')
set_trace_width(diff_net, [2])
set_spacing(diff_net, [3])

Drag options to blanks, or click blank then click option'

ADP_NET

B0.2

C0.3

DSIGNAL_NET

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up net names.

Setting spacing smaller than trace width.

Define the differential pair net as DP_NET, set the trace width to 0.2 mm, and spacing to 0.3 mm for proper differential pair routing.