Mic click

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Product Code: MIKROE-2563
MPN: MIKROE-2563

Mic click carries the SPQ0410HR5H-B surface mount silicon microphone with...more

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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., V_DD(min)DD(max), no load, unless otherwise indicated

Parameter	Symbol	Conditions	Min	Typ	Max	Units
Supply Voltage¹	V_DD		1.5		3.6	V
Supply Current^1,2	I_DD			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, R_load>3k?			1	%
Acoustic Overload Point	AOP	10% THD @ 1 kHz, S=Typ, V_DD=3.6V, R_load>3k?	115			dB SPL
DC Output		V_DD=1.5V		0.73		V
Output impedance	Z_OUT	@ 1 kHz			400	?
Directivity			Omnidirectional
Polarity		Increasing sound pressure	Decreasing output voltage

¹100% tested.
²Maximum specifications are measured at maximum V_DD. Typical specifications are measured at V_DD=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).

Notes	Pin					Pin	Notes
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 }