2-to-1 Audio Signal Multiplexer

A 2-to-1 analog multiplexer can select one signal path from two sources. This example switches between a microphone-level source and a line-level source under control of a select signal. The output then feeds a defined load representing the next stage. The drawing is useful when planning source selection ahead of a preamplifier, recorder or audio processor. In a built circuit, choose an analog switch that suits the signal range, supply voltage and audio performance requirements. Add gain control or buffering where the source impedances and levels require it.

種類 回路図規格 IEEE Std 315 / ANSI Y32.2エンジン schematex-circuit更新日 2026/9/24

依頼内容

“Draw a 5 V 2-to-1 analog audio multiplexer that selects between a microphone input and a line input with a source-select control and a 10 kΩ output load.”

次はこちらAdd a mute control.Change the line input to 2 V peak-to-peak.

この図に含まれるもの

図の背後にある意思決定を読み解く。

01Two source inputs

Microphone and line level feed the selector.

02Select control

One signal chooses the active source.

03Loaded output

The output feeds the next audio stage.

Use this when an audio circuit needs to choose one source path.

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よくある質問

Can a multiplexer select audio signals?

Yes, an analog switch can select between compatible audio signal paths.

Why are microphone and line inputs different?

They normally have different signal levels and may need separate gain or buffering.

What does the select signal do?

It chooses which input the multiplexer connects to the output.