MICROPHONE AMP Board User Manual
Contents
1. All Mikroelektronika s development systems feature a large number of peripheral modules expanding microcontroller s range of application and making the process of program testing easier In addition to these modules it is also possible to use numerous additional modules linked to the development system through the I O port connectors Some of these additional modules can operate as stand alone devices without being connected to the microcontroller MikroElektronika SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD waking ik siw ple MICROPHONE AMP The MICROPHONE AMP additional board is used to amplify audio signals detected by the microphone provided on the additional board Detected audio signals are amplified and sent to the connector used to connect a loudspeaker The potentiometer is used to adjust the volume of sound emitted from the loudspeaker Key features 3 3 to 5V power supply voltage Loudspeaker impedance of 4 8 or 16 ohm 300 to 725mW output power depends on the power supply voltage and loudspeaker impedance etc E _ 0UT Emo mour Figure 1 MICROPHONE AMP additional board How to connect the board The MICROPHONE AMP board is connected to the power supply via a screw terminal CN1 The power supply voltage has to be stabilized and in a range between 3 3 and 5V DC The positive voltage is supplied on the VCC pin of the CN1 connector whereas the negative volta2. ge ground is supplied on the GND pin The additional board is connected to the loudspeaker via a screw terminal CN2 When establishing connection between them the positive terminal of the loudspeaker is connected to the OUT pin whereas the negative terminal is connected to the OUT pin of the CN2 connector MIC1 MICROPOHONE VCC VCC gar se E4 C7 10uF 100nF C6 100nF Figure 2 MICROPHONE AMP additional board connection schematic MikroElektronika 52 58mm MICROPHONE AMP HWREV 1 3 3 5U AMP ON BOARD MICROPHONE 34 00mm 3 20mm OUT E Ero M OUT MICI 9 E mcs Cm lice IN mics Figure 3 Dimensions of the MICROPHONE AMP additional board MikroElektronika W0D BOJ4IW Sd JJO Je SN JOLJUOD 0 le Is u JOU op sjesodoid ssauIsnq Jo slu uituoo suonsenb Aue ney nok Jl poddis ue uoo aou MMM Toae pasu snl sjonpoid i Qa UUO3 o NIL AWA ye llsq M Ino SIA aseaid oar ind RTE aoi wee o Riem no Jj Q1YOM d3dAJ39W4 YO4 SNOILNTOS JYYMAYYH ANY kE
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