Agc(automatic gain control chip) help

[wany]

Hey
audio output that i need to have a AGC on it. Its an audio output. What i basically need to do is keep the audio output at a constant level no matter what the input levels go to i am looking for a cheap Automatic gain control chip. Or audio level control chip. But i don't know of any could some help me out here please.

 

[bychon]

NE570 at mouser.com

 

[crutschow]

You can use an analog multiplier such as the Analog Devices AD633. Theres an application note at the end of the data sheet that discusses its use as a AGC circuit.

 

[wany]

I am looking at the NE570. But i am a bit confused about the pin out. I havn't read through much of the datasheet. Where do i plug up my audio signal in?

 

[bychon]

I can't seem to bring myself to read the data sheet for you and them type it back in here. You are going to need a dozen or more answers from the data sheet, and it would take all day for me to read each one for you.

 

[wany]

Never mind i found a chip that suit me more the AN7511 not sure how easily i can find it though..

 

[wany]

Just wondering if you could recommend an audio amp to give a 28dB increase because i don't need the AGC anymore i will take the audio output off another point and just thinking of use an AMP to increase the output. Any audio op amp in mind that are cheap

 

[Mikebits]

Here is a good app note on the NE570. https://www.electro-tech-online.com/custompdfs/2010/05/SA57120AN.pdf

But since you are now not in need of AGC I guess the point is moot.

 

[wany]

I'll will still check it out. I could go both ways either a AGC.... Or the op amp the op amp would be similar of course i am not even sure if i can get any these chips because where i live alot people that works in these electronics store don't know jackshit when you ask them for stuff they only know if they have a certain part number