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Old 17th April 2013, 12:33 PM   #1
mrkva is offline mrkva  Netherlands
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Default Best chip-amp for battery powered amplifier?

Hello,

I am looking for a (I guess TDA) chip-amp IC for battery powered amplifier. Requirements are 10-20 W power, high quality of audio, single rail DC supply, easy surrounding circuitry. Any suggestions?

Jonas
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Old 17th April 2013, 01:14 PM   #2
johnr66 is offline johnr66  United States
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Check the car radio BTL chips. There are many to choose from and get you within the power range you need with a 12v supply.
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Old 17th April 2013, 01:40 PM   #3
mrkva is offline mrkva  Netherlands
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Oh, and I guess I have mentioned, it should be portable. No car batteries. Thank you very much!
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Old 17th April 2013, 02:39 PM   #4
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TDA8566 (schematic shown on my blog) can do 10W into 8R comfortably with awesome SQ provided the power supply is adequately decoupled. LiFePO4 type batteries work well with it I hear.
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Old 17th April 2013, 03:18 PM   #5
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Location: Not where whatever I am looking for is at.
For battery use, I would consider going for a classD. 41Hz has some nice ones.
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Old 18th April 2013, 03:21 AM   #6
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What about a motorcycle battery?

Or a 12v sla battery ?
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Old 18th April 2013, 08:14 AM   #7
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Location: Not where whatever I am looking for is at.
For portable, I'd take some LiPo's as used in scale models.
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Old 18th April 2013, 01:39 PM   #8
JMFahey is offline JMFahey  Argentina
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Battery choice depends **a lot** on what you are able to pay.
What does "portable" exactly mean?
What's the intended use?
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Old 18th April 2013, 01:41 PM   #9
mrkva is offline mrkva  Netherlands
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Quote:
Originally Posted by JMFahey View Post
Battery choice depends **a lot** on what you are able to pay.
What does "portable" exactly mean?
What's the intended use?
Main use will be general purpose amplification for various outdoors/indoors acoustic experiments, that we do in school (I study at conservatory dealing with acoustics and electronic music).
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Old 18th April 2013, 07:02 PM   #10
JMFahey is offline JMFahey  Argentina
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In that case, consider a 12V7A "gel/alarm" type battery, a good compromise between size/weight/power.
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