Four-channel electronic switch audio mixer circuit

Published:2011/5/6 22:01:00 Author:TaoXi | Keyword: Four-channel, electronic switch, audio mixer | From:SeekIC

The four-channel electronic switch audio mixer circuit is as shown. The LF13201 is the four-channel analog electronic switch, the LF356 is the low-noise FET input type op amplifier. Four-channel signal is RC coupled or directly coupled by the amplifier, and is added to the electronic switch LF13201's pin-2, pin-7, pin-10 and pin-15, the single-pole double-throw switch is composed of the above pins and the pin-3, pin-6, pin-11, pin-14. The four analog switches are controlled by pin-1, pin-8, pin-9 and pin-16's external control voltage. When the control voltage has high-level voltage, the corresponding switch turns off. The control voltage is provided by the TTL and CMOS driver circuit but not the LF356 and LF13201.



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