An alternative to POWER AMPLIFIER IC Sanyo LA4537M

Thread Starter

vinodquilon

Joined Dec 24, 2009
234
I am going to set up one hearing aid circuit using POWER AMPLIFIER iC la4537m (see the attachment).

But in our locality this IC is rarely avail. Can anyone suggest any alternative ic to
la4537m so that I can directly replace on main circuit ?
 

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Thread Starter

vinodquilon

Joined Dec 24, 2009
234
I choose TDA2822M.

I can change its mono configuration to stereo easily,but- it can
only input through two channels only.

How can I configure a commercially available hearing aid circuit
that can absorb all surrounding sounds around patient within reasonable range ?


 

Audioguru

Joined Dec 20, 2007
11,251
A hearing aid does not boost all audio frequencies. It boosts only frequencies that need boosting, usually high audio frequencies.

Your schematic is too fuzzy to see any details.
 
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