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Re: Please recommend Audio power amplifier for portable devi
Hi all,I also want to know!
If the supply voltage is 5V,and the resistance is only 8Ω,so,how to get 1.25w
output power?
In detail,I mean what's the range of the input and output?
And ,maybe someone can tell me what is critical point...
If your output stage drives the 32Ω resistance,you get the scale of the mos tansistor by the power which would be delivered.So for the same reason, you can get the scale by your specefications! By the way,I also want to know,if the scale of the output stage is decided,(I am sure the scale is...
Thanks to Tranlee and Vamsi Mocherla.You are right! In order to drive low resistance,so the scale is very big!But the bigger is ,the better the performance!I think the scale is adjustive! So,I wonder that I may optimize the ratio between the scale of the two output transistors!(I think this is...
in this fugure,if the output stage drives a low value resistance,so the scale of pmos and nmos is very big.But big scale of mos transistor deduces big quiescent.how to reduce it?Optimizing the ratio of the scale of the nmos and pmos? Or modifying the scale of M21 and M24 ?Maybe someone can...
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