Best chip-amp for battery powered amplifier?

[mrkva]

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

 

[johnr66]

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.

 

[mrkva]

Oh, and I guess I have mentioned, it should be portable. No car batteries. Thank you very much!

 

[abraxalito]

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.

 

[vacuphile]

For battery use, I would consider going for a classD. 41Hz has some nice ones.

 

[norman bates]

What about a motorcycle battery?

Or a 12v sla battery ?

 

[vacuphile]

For portable, I'd take some LiPo's as used in scale models.

 

[JMFahey]

Battery choice depends **a lot** on what you are able to pay.
What does "portable" exactly mean?
What's the intended use?

 

[mrkva]

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).

 

[JMFahey]

In that case, consider a 12V7A "gel/alarm" type battery, a good compromise between size/weight/power.

 

[EWorkshop1708]

Use a couple of 18V NiCd drill batteries. Take all the cells out, and rewire them into a 12V pack. That will work for your amplifier.

 

[vt4c]

This is what I use....

Charlize 2! - SGD156.00 : Welcome to the diyparadise e-store!

 

[mrkva]

Hey, I ended up using TPA3122D2, class D preamp! Very neat. Have laid down the PCB, now I have to solder it up🙂