Experiment 6 - The Digitally Controlled Bilaterale Switch

The previous multiplexers and demultiplexers could only handle digital signals. However, analog signals are used in many applications...

With the component C-MOS 4066 you can use analog signals in a digital circuit.

The C-MOS 4066 contains four analog switches, which are controlled by a digital signal...

Internal structure of a C-MOS 4066.

With the digital control input (Ctr) you control the analog switch...

• If Ctr = 0, the switch is open.
• If Ctr = 1, the switch is closed.

Circuit diagram bilateral switch C-MOS 4066.

Circuit diagram bilateral switch C-MOS 4066. (Enlarge)

For the analog switch it does not matter in which direction ("bilateral") the analog signal is applied...

Circuit diagram bilateral switch C-MOS 4066 II.

Circuit diagram bilateral switch C-MOS 4066 II. (Enlarge)

In the next experiments you look at the bilateral switch in more detail...