Simple audio recorder solution selection

[krdmitry]

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?

[Nickname1623_O]

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