7

DS1165F1

CS7331P

5 Applications Information

5 Applications Information

Cirrus Logic provides a range of audio codecs incorporating an analog microphone input interface. These codecs support

direct connections to silicon microphones such as the CS7331P.

Further information on Cirrus Logic audio codecs is provided in the respective product data sheet, which is available from

the Cirrus Logic website.

5.1 Important Assembly Guidelines

•

Do not put a vacuum over the port hole of the microphone. Placing a vacuum over the port hole can damage the

device.

•

Do not board wash the microphone after a reflow process. Board washing and the associated cleaning agents can

damage the device.

•

Do not expose to ultrasonic cleaning methods.

•

Do not use a vapor phase reflow process. The vapor can damage the device.

•

Please refer to application note WAN0273 MEMS Mic Assembly and Handling Guidelines for further assembly and

handling guidelines.

Figure 4-5. PSRR (dB) vs. Frequency (100 Hz–10 kHz)

Figure 4-6. Sensitivity vs. Supply Voltage

Figure 4-7. Current Consumption vs. Supply Voltage

40.0

42.0

44.0

46.0

48.0

50.0

52.0

54.0

56.0

58.0

60.0

62.0

64.0

66.0

68.0

70.0

100

1000

10000

Frequency (Hz)

-0.5

-0.4

-0.3

-0.2

-0.1

0.0

0.1

0.2

0.3

0.4

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

Supply Voltage (V)

46

48

50

52

54

56

58

60

62

64

1.0

1.5

2.0

2.5

3.0

3.5

4.0

Supply Voltage(V)