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Microphone, Drawing, Filter – BeStar BCM6022OPBC-38 User Manual

Page 3: Angular response, Measurement circuit

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C

A

6

Rev.

Date

5

Drawn

B

www.be-star.com [email protected]

Approved by:

4

Note

Date:

Checked by:

Drawn by:

3

2

D

E

G

F

H

6

5

4

3

2

C

A

1

B

D

E

F

G

H

1

BCM6022OPBC-38

王焕焕

120

60

30

90

★Angular Response

BCM6022OPBC-38

150

220

330

0

300

270

210

180

徐 波

DRG NO:

Page:3 of 6

王焕焕

09.07.01

A

王 平

Microphone

BS/TEM01.126A

180

09.07.01

3. Measurement Circuit:

2. Drawing

0

filter

1.0

±0.1

terminal 1

Terminal 2

Ш

6

.0

±0

.2

+

-

2.8

±0.3

2.2

±0.2

0

.9

1

.9

±0

.2

2-

Ш

0

.45

±

0

.05

+

C:1 F

Terminal 1

RL=2.2K

Power Supply 3.0V

Output

Terminal 2

Earth

-

FET impedance
Converter

C1

10pF

C2
33pF

ECM unit

Shield Case

Acoustics & Sensor