ADG408 8:1 Analog Multiplexer Interactive Analog Channel Selection

Application

This circuit demonstrates ADG408 8:1 Analog Multiplexer as an interactive analog signal router. Use the clickable control sources to change the selected channel or enabled switch path, then read the routed output voltage in the operating-point table.

Design Context

A few input channels are driven by simple DC levels while unused channels are tied to ground. The control inputs are driven by ground-referenced toggleable logic-level sources so the operating point can update quickly without switching to a time-domain simulation. The output node is lightly loaded with a 100K resistor and measured with Vout.

Expected Behavior

When the address or enable controls select a driven input channel, the measured output should move near that channel voltage. Selecting a grounded or disabled path should pull the measured output near 0 V. The behavior is intentionally steady-state so the table is the primary result view.

Key Values

• Driven input examples: 1 V, 2 V, and 3 V where those channels are present.
• Logic controls: 0 V low and 5 V high.
• Supplies: +15 V, -15 V, and ground.
• Output load: 100K to ground.
• Simulation: interactive operating point.

Suggested Experiments

• Toggle A0, A1, A2, A3, EN, or IN controls and watch the output table update.
• Change a driven input source value and rerun the operating point.
• Compare a selected driven channel with a grounded channel to see the switch isolation behavior.

Featured Component

ADG408 8:1 Analog Multiplexer is the featured analog switch/multiplexer macro-model. The demo focuses on channel selection and output routing instead of package pin order, so the schematic groups controls, analog channels, supplies, and measured outputs by function.