Amplifiers

From Wildsong
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Most of these are class D unless noted. I like class D most of the time.

National series

  • LM386 noise outdated analog pretty cheap inefficient class AB but not really cheap compared to better newer amps
  • LM4853 "Boomer" costs too much, love that product line name "Boomer" I mean ???
  • LM48560 piezo / haptic driver
  • TDA2005 -- I have a FutureKit that's been on my bench forever and I might replace it soon just to try out something else.


Diodes Incorporated "PAM" series

  • PAM8302 mono chip is around $.40 Adafruit breakout is $3.95
  • PAM8403 very common very quiet obsolete I have 2 from All Electronics MPJA has them for $1.75
  • PAM8406 upgrade to 8403 chip is $.84 and boards run around $1-$10 I ordered a couple spendy ones from Amazon, about $7 each


The PAM8403/PAM8406 has a mute control and PAM8406 has a mode control (Class AB or Class D) and a "shutdown" control and sometimes those pins are not brought out. The PAM8406 boards I bought today has a 2 gang volume knob and both those signals are available.

The PAM8406 should have ferrites on the outputs. See the data sheet https://www.diodes.com/assets/Datasheets/PAM8406.pdf and eval board https://www.diodes.com/assets/Evaluation-Boards/PAM8406-User-Guide.pdf

There's a MAX58937 or something from Adafruit that has an i2s input instead of analog. It's around 3W

I have several i2s 20W boards including one in my junk box