1
1
2
2
3
3
4
4
D
D
C
C
B
B
A
A
560p
C1
.1u
C2
100p
C4
100p
C5
100p
C6
100p
C7
100p
C8
100p
C9
100p
C10
100p
C11
100p
C12
.022u
C13
.1u
C14
560p
C17
220p
C18
.1u
C19
1
2
3
4
5
6
7
8
9
*
0
#
5087
R1
14
R2
13
R3
12
R4
11
C1
3
C2
4
C3
5
VSS
6
VSS
6
MUTE
10
TONE
16
STE
15
OSC2
8
OSC2
8
OSC1
7
OSC1
7
VDD
1
VDD
1
C4
9
XMSW
2
U1
47K
R1
82R
R2
82R
R3
10K
R4
39K
R5
470K
R6
330R
R8
47K
R9
HI Z
HI Z
P2A
+6.5V to 24V
+6.5V to 24V
P2B
LO Z
LO Z
P2C
GND
GND
P2D
SPKR
SPKR
P2E
N/C
N/C
P2F
N/C
N/C
P2G
N/C
N/C
P2H
PTT OUT
PTT OUT
P2I
N/C
N/C
P2J
N/C
N/C
P2K
N/C
N/C
P2M
N/C
N/C
P2M
KEYPAD
B25
Q2
D25
Q1
VIN
+5V
BSS
Q3
2.2M
R10
.47u
C15
.47u
C16
.47u
C3
10K
11
33
22
RP1
VIN
LEVEL ADJ
+5V
SINGLE
TONE
ENABLE
DTMF OUT
3.579545 MHz.
Y1
A7
2
1
D2A
A7
3
1
D2B
A7
2
1
D1A
A7
3
1
D1B
VIN
78L05
VIN
8
VOUT
1
2
GND
GND
3
GND
GND
6
GND
GND
7
GND
GND
N/C
4
N/C
5
VR1
VIN
+5V
*
JP1
0R
JP2
Midian Electronics, Inc.
DATE:
DESIGN
2008/10/09
AIB
AWS
DWN.BY
2008/10/09
REV.
APPR
SCHEMATIC
COPYRIGHT 2008
TTE-7
REV
SHEET
PROJECT NAME
DOCUMENT NUMBER
PRJ_7163_TTE7
7163-A-1
A-1
