EEVblog Electronics Community Forum
Electronics => Projects, Designs, and Technical Stuff => Topic started by: heinrich.hugs on November 25, 2016, 01:33:16 pm
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This is my first post and the reason I signed up :P so I primarily build guitar based audio electronics, and I love using loads of different op amps but its always annoyed me that I have to use a transistor based buffer for actually putting a voltage across speakers. So when I saw that this chip was rated for an amp I was quite surprised, is there any obvious downside for using this in audio applications?
Thanks :)
Datasheet: http://www.onsemi.com/pub_link/Collateral/TCA0372-D.PDF (http://www.onsemi.com/pub_link/Collateral/TCA0372-D.PDF)
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The slew rate will be too low to faithfully reproduce treble. It's also quite noisy compared to other op-amps such as the NE5532.
http://www.ti.com/lit/ds/symlink/ne5532.pdf (http://www.ti.com/lit/ds/symlink/ne5532.pdf)
Why not use a dedicated audio amplifier IC? What are your load, power supply and power output requirements?
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Oh right thanks, never knew what slew rate meant... I mainly wanted to make a really clean no eq amp for me to put pedals through so maybe like 10W output over 16ohm speaker and a good bass response. I tried a amplifier chip can't remember what it was called but it required a capacitor over two pins that seemed to select the most amplified frequency?? I'm not sure.
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The most popular power amplifier IC for audio is LM3886, maybe it was that one?
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No it wasn't that but that looks quite good I might try that instead thanks :)
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If it's small and low power, it might have been the LM386.