Mic click

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  • MIKROE-2563
  • MIKROE-2563
Mic click  carries the  SPQ0410HR5H-B  surface mount silicon microphone with... more
Product information "Mic click"

Mic click carries the SPQ0410HR5H-B surface mount silicon microphone with maximum RF protection. The click is designed to run on a 3.3V power supply. It communicates with the target microcontroller over the AN pin on the mikroBUS™ line.

How it works

Mic clicks contains a silicon microphone, which outputs the signal to the analog pin (AN) on the mikroBUS™ line via the op amp.

SPQ0410HR5H-B features

The SPQ0410HR5H-B is a miniature, high-performance, low power, top port silicon microphone.

Using the SiSonic™ MEMS technology, the SPQ0410HR5H-B consists of an acoustic sensor, a low noise input buffer, and an output amplifier.

MaxRF protection prevents RF noise in traces from getting into the mic output.

TEST CONDITIONS: 23 ± 2C °, 55 ± 20 % R.H., VDD(min)DD(max), no load, unless otherwise indicated

ParameterSymbolConditionsMinTypMaxUnits
Supply Voltage1 VDD   1.5   3.6 V
Supply Current1,2 IDD     120 160 µA
Sensitivity1 S 94 dB SPL @ 1kHz -45 -42 -39 dBV/Pa
Signal to Noise Ratio SNR 94 dB SPL @ 1kHz, A-weighted   59   dB(A)
Total Harmonic Distortion THD 94 dB SPL @ 1kHz, S=Typ, Rload>3k?     1 %
Acoustic Overload Point AOP 10% THD @ 1 kHz, S=Typ, VDD=3.6V, Rload>3k? 115     dB SPL
DC Output   VDD=1.5V   0.73   V
Output impedance ZOUT @ 1 kHz     400 ?
Directivity     Omnidirectional
Polarity   Increasing sound pressure Decreasing output voltage

1100% tested.
2Maximum specifications are measured at maximum VDD. Typical specifications are measured at VDD=1.8V.

Omnidirectional microphones

SPQ0410HR5H-B is an omnidirectional microphone. As the name implies an omnidirectional microphone can hear equally in all directions. So whichever way you hold it, up or down, it will work the same.

Speciifications

Type Microphone
Applications Processing audio with an MCU, mobile phones, smartphones, laptop computers, sensors, digital still cameras, portable music recorders, etc.
MCU SPQ0410HR5H-B
Key Features Omnidirectional, MaxRF protection, Sensitivity: -42 dBV/Pa
Interface Analog
Input Voltage 3.3V
Compatibility mikroBUS
Click board size S (28.6 x 25.4 mm)

Pinout diagram

This table shows how the pinout on Mic click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

NotesPinMikrobus logo.pngPinNotes
Analog output pin OUT 1 AN PWM 16 NC  
  NC 2 RST INT 15 NC  
  NC 3 CS TX 14 NC  
  NC 4 SCK RX 13 NC  
  NC 5 MISO SCL 12 NC  
  NC 6 MOSI SDA 11 NC  
Power supply +3.3V 7 3.3V 5V 10 NC  
Ground GND 8 GND GND 9 GND Ground

Programming

Code examples for Mic click, written for MikroElektronika hardware and compilers are available on Libstock.

Code snippet

The following code snippet measures volume every 10 ms, and outputs measured data to a tft display.

01 void main()
02 {
03    uint16_t measuredValue;
04
05    systemInit ();
06    TFT_Set_Pen( CL_RED, 1 );
07    while (1)
08    {
09        measuredValue = ADC1_Read(12);
10        y = measuredValue/30 + 71;
11        if (x !=0)
12            TFT_Line (x, y, oldx, oldy);
13
14        oldx = x;
15        oldy = y;
16
17        Delay_ms (10);
18        x++;
19        if (x==320)
20        {
21            x=0;
22            TFT_Set_Pen( CL_WHITE, 1 );
23            TFT_Rectangle (0,71,320,219);
24            TFT_Set_Pen( CL_RED, 1 );
25        }
26    }
27 }

 

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