SMM310

Silicon MEMS Microphone

Data Sheet

7

V1.1, 2008-05-28

Figure 4

Typical measurement of sensitivity, equivalent noise level, current consumption and DC

output voltage over power supply

V

DD

Figure 5

Typical total harmonic distortion over sound pressure level (1 kHz,

V

-45

-44

-43

-42

-41

-40

-39

1.4 1.7

2

2.3 2.6 2.9 3.2

26.5

27.5

28.5

29.5

30.5

31.5

32.5

Sensitivity

Equivalent

Noise

60

65

70

75

80

85

90

1.4 1.7 2 2.3 2.6 2.9 3.2 3.5

0.5

0.6

0.7

0.8

0.9

1

1.1

1.2

1.3

1.4

1.5

Current

Consumption

DC Output

Voltage

0

0.2

0.4

0.6

0.8

1

1.2

1.4

1.6

1.8

2

90

100

110

120

130

Sound Pressure [dB SPL]