SAN3021
7 Application schematic:
1
2
3
4
5
6
7
8
Applications Using Dynamic Handset Microphone
A
A. Using dynamic handset
microphone as ringer
in one-piece telephones.
21
+
C14
220u/25V
R21
6..10K
R24
360K
B. Amplifier for general
applications.
A
R20
2K2
FCI
LS
1
27
M1
23
C12
X
M2
IC1
24
C11
100N
Q5
BC549
C16
1N
LI
C13
100N
C15
1N
RR20
2K2
LI
R23
2K
R25
110K
27
+
CC14
100u/25V
RR21
3K
RR24
27K
off
28
CC11
100N
6
SA2531/2
CC13
100N
6
STB
RO2
AGND
RR
3
5
25
7
CS
CI
RR23A
1K
+
CC15
1N
MIC
R7
220K
M2
12
24
1K1
RR26
B
8
5
RI
RO1
2
on
7
SW1_b
Q6
BC549
CC19
1N
M1
23
B
+
CC17
10U
CC18
10U
RR25
12K
R17
100K
10
1N4148
Q4
BC 547B
D5
8
22
HS/DP
MO
MODE
LLC
C1
C2
C3
C4
R1
R2
R3
R4
OSC
16
15
14
13
20
19
18
17
R26
1K1
RR23B
2K
+
R18
>=0
C
MIC
C8
10u/25V
D4
15V
1N4148
R15
330K
D6
9
C17
10n
11
C
4
VDD
26
+
C10
10u/16V
D11
5V6
+
C9
470u/16V
The information furnished here by SAMES is believed to be correct and accurate. However, SAMES shall not
D
VSS
be held liable to any party for any damages including but not limited to personal injury, property damage, loss of
profits, loss of use, interuption of business or indirect, special, incidental or consequential damages, of any kind,
in connection with or arising out of the furnishing, performance or use of the technical data. No obligation or
liability to any third party shall arise or flow out of SAMES rendering technical or other services.
SAMES Telecom
Sch.
SAN3021
Pn#
Single Chip Telephone Application Circuit
Sh 01 of 01
Date : 3rd March 1997
Rev : 1.1
D
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8
4/5
sames
SAMES [ SAMES ]
