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Old 12th April 2010, 04:12 AM   #1
trzn is offline trzn  Lithuania
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Default Simple, efficient 5w chip amp

Hi,
I am looking for a chip amp that meets these requirements:
- Source: 12 V
- Output: ~5W
- Mono
- Very efficient in terms of energy consumption (so, I believe it should be class D amp)
- Very little components required to make it functional
- Audio output quality is not important

I cannot find anything that matches these requirements. Maybe I am missing something. I hope you can help me.
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Old 12th April 2010, 05:53 AM   #2
ratza is offline ratza  Romania
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Try here:
Analog-Input Class-D Speaker Amplifiers - Amplifiers and Linear - TI.com
__________________
Any solution is a compromise.
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Old 12th April 2010, 08:23 AM   #3
Bone is offline Bone  United Kingdom
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Check this one out 2*8W @ 8ohm/4ohm, MPS7720 D-class Audio Amplifier Board_Audio Amplifier Boards_Audio Amplifier and other Audio Boards_RF and Audio, Video Equipments_Sure Electronics' Webstore

Tony
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Old 12th April 2010, 09:46 AM   #4
trzn is offline trzn  Lithuania
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I found TPA3003D2 and TPA3007D1. The latter one is not sold in low quantities (you need to order at least 2000 units!), so I have the first one left only. But that one is a stereo amp, it requires quite a few additional components to work according to the data sheet and I have no clue how efficient it is apart from that it is class D amp.


It is stereo amp, a bit too powerful and a bit too good (I need something even simpler).
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Old 12th April 2010, 08:37 PM   #5
tomchr is offline tomchr  United States
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You don't mention a load impedance... I assume a 4-ohm load. How about the LM48511?

~Tom
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Old 12th April 2010, 11:58 PM   #6
trzn is offline trzn  Lithuania
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Quote:
Originally Posted by tomchr View Post
You don't mention a load impedance... I assume a 4-ohm load. How about the LM48511?

~Tom
It could be either 4 or 8 ohm.

LM48511 would be great, but it operates in 3-5.5V and it has llp case, which means it is not designed for home use applications.
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