BeStar BCM9745NC-W82PLUG - Manual (Page 2)

L=1 Cm
L=50 Cm
R
e
la
tiv
e R
es
p
ons
e (
dB
)
T
hi
s
pr
in
t an
d i
n
fo
rm
ati
o
n t
h
er
e
in
a
re
p
ropr
ie
tar
y
to
B
e
st
ar
E
le
ctr
oni
cs
I
ndu
st
ry
C
o.,
Lt
d.
a
nd
s
ha
ll n
ot
b
e us
ed
in
wh
ol
e
or
in
pa
rt
w
ith
o
ut
it
s wr
itt
en c
ont
ent
DRG NO: BS/TEM01.074A
BESTAR ELECTRONICS INDUSTRY CO.,LTD
6 5
www.be-star.com [email protected]
4 3
Page:1 of 5
2 1
Rev.
A A 06/06/06
Date
王丽娟
Drawn
B
Drawn by:
Note
Checked by:
Approved by:
Date:
程久生
郭 敏
06/06/06
王丽娟
50 20
-30
C
-20
-10
200 100 2k 1k 500
Frequency(Hz)
Microphone
BCM9745NC-W82Plug
A
B
20k 5k 10k
C
No. Item Specifications
1 Sensitivity -42±2dB(0dB=1V/Pa,1kHz)
2 Impedance Less than 2.2KΩ at1kHz
3 Directional Noise concelling
4 S/N Ratio more than40dB(0dB=1V/Pa,1kHz)
5 Max. Input Sound Level 100dB S.P.L
★ Frequency Resonse Curve
D
0
+10
+30
Frequency Response 20Hz-10kHz
Rate Voltage 2.5V
Operating Voltage 1.5-10V
Decreaing Voltage characteristic -3dB(V
s
=1.5V)
7
E
9
8
F
6
D
E
F
Test Condition (Vs=2.5V RL=2.2Kohm Ta=20 C R.H.=65%)
G
BCM9745NC-W82Plug
H
1. Characteristics
6 5 4 3
G
H
2 1