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Simple audio recorder solution selection

krdmitry
Associate II

‎2015-12-03 01:51 AM

Posted on December 03, 2015 at 10:51

Hi, All!

Could you please recommend audio amplifiers solution for mono recorder / player with following characteristics:

  • electret mic
  • dinamic speaker 0.3W
  • power voltage 3.0V
  • shutdown possibility is neccessary
  • not so expensive
  • will be used with STM32F3 12bit ADC & DAC for recording short voice tags to waypoints

Currently I'm looking for TS472 mic preamp and class-D or AB BTL speaker amp. Might is be a better solution?

BTW, is it possible to contol TS472 gain by MCU?  Or add a limiter?
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1 REPLY 1
Nickname1623_O
Associate II

‎2015-12-03 06:06 AM

Posted on December 03, 2015 at 15:06

hi Dmitr,

TS472 gain setting can be controlled by MCU with different I/O .for more info you may check AN2240 in ST website. and for audio amplifier you can consider TS4871 .

thanks to consider ST device

YT

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