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Some doubts about LA3161 ?

  • viyor Thursday, April 20, 2017 4:15 PM Reply


    I would like to use LA3161 to be an integrated 2 channel pre-amplifier intended for car stereo applications.But I don’t know if it’s suitable.So here I am.

    In the following circuit diagram, Capacitors C8 and C9 are input coupling capacitors. Capacitors C3 & C6 are noise filter capacitors. The lower cut-off frequency depends on the value of C3 and C6 network comprising of components R1, R2 & C1 defines the frequency characteristics of left channel and the network consisting of R3, R4 &C2 defines the frequency characteristics of the right channel. C7 is the power supply filter capacitor and it must be connected as close as possible to the power input pin (pin 4) of the IC. But this IC doesn’t have short circuit protection, and short between pins may cause damage.My questions:

    1).Have you used LA3161? How to decrease the damage of short between pins as possible?

    2).Can the circuit be powered if the DC >12V?

    3).Is this circuit (A preamp circuit, generally) required before a power amplifier circuit?


    Posts(1) | Reviews | Tip post

    post edited by viyor on 4/24/2017 at 10:29 AM
  • gasbag11 Top 10 Forum Poster Friday, April 21, 2017 4:30 AM Reply

    Please read my signature. vv Searching for la3161 gives no results

    ALWAYS ask questions about a specific item on its
    page. Scroll down and click on "Post a new topic".
    Posts(11150) | Reviews | Tip post

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