MT9092
330Ω
+5V
+
+
–
VBias
T
10µF
1K
1µF
R
Electret
Microphone
+
330Ω
VBias
+
–
+5V
+
T
10µF
1K
1µF
R
+
Electret
Microphone
0.1µF
0.1µF
VBias
+5V
6
5
4
3
2
1
44 43 42 41 40
40Ω nom.
32Ω min.
+
7
8
39
38
37
36
35
34
33
32
31
30
29
DSTi
ST-BUS
Port
DSTo
C4i
75Ω
to
9
Transmission
Device
10
11
12
13
14
15
16
17
F0i
150Ω
75Ω
+5V
MT9092
IRQ
.1µF
1000pF
1000pF
SCLK
Serial
Microport
INTEL
1000pF caps
are optional
DATA2
DATA1
LCD
MCS-51
CS
WD
Note: Single-ended configurations reduce
dynamic range by a factor of two.
18 19 20 21 22 23 24 25 26 27 28
LCD
Figure 9 - Application Circuit - single-ended audio input
7-33