1
1
2
2
3
3
4
4
5
5
6
6
D
D
C
C
B
B
A
A
CP
CJS
1997-02-14
DML
2013-05-14
C-4
1 of 1
7283
MIDIAN ELECTRONICS, INC.
DATE:
DESIGN:
DWN BY:
REV:
APPR
COPYRIGHT ©
REV
SHEET
PROJECT NUMBER
DOCUMENT NAME
SCHEMATIC
2013
BTD-2
.022u
C16
10K
R61
*
C22
100K
R62
-
+
2
3
1
LMV324
U2:1
-
+
6
5
7
LMV324
U2:2
-
+
9
10
8
LMV324
U2:3
-
+
13
12
14
LMV324
U2:4
4
VCC
VCC
11
GND
GND
LMV324
U2:5
22K
R63
220K
R64
VAN
VAN
11
33
22
1M
R65
10K
R67
2.2K
R66
200K
R68
.01u
C17
560p
C27
15K
R1
100K
R2
.022u
C1
100p
C2
390K
R3
*
C29
1.2M
R4
VAN
+5V
OSC2 36
TCMP 33
VDD
38
VPP
43
SS
32
B3 11
D7 34
OSC1
37
B0 8
B1 9
A5 2
A6 1
A7 44
A4 3
A3 4
A2 5
A1 6
A0 7
C4
21
C5
20
C3
23
C0
26
C1
25
C2
24
C6
19
C7
18
B4 12
B7
15
B6 14
GND
17
RES
41
B2 10
TCAP
35
IRQ
42
B5 13
SCK
31
MOSI
30
MISO
29
RDI
27
TDO
28
NC1
16
NC2
22
NC3
39
NC4
40
68705FP
U1
.1u
C15
+5V
20K
R8
B25
Q1
*
R69
100K
R5
10K
R6
+5V
10K
R9
2
1
A6
D1:1
3
1
A6
D1:2
560p
C6
+5V
1
P2:1
2
P2:2
3
P2:3
4
P2:4
5
P2:5
6
P2:6
7
P2:7
8
P2:8
0R
JU2
10K
R13
2
1
A6
D2:1
3
1
A6
D2:2
560p
C7
+5V
100K
R10
100K
R11
100K
R12
+5V
10K
R14
2
1
A6
D3:1
3
1
A6
D3:2
560p
C8
+5V
CS 1
SCLK 2
SI 3
SO 4
VCC
8
NC1
7
NC2
6
GND
5
9346
U3
100K
R16
.1u
C14
560p
C4
.1u
C9
7.5K
R56
10K
R55
.47u
C13
10K
R15
.47u
C12
.001u
C11
560p
C10
5206
IN1
1
ENA
3
GND
2
R
ES
4
OUT 5
VR1
+5V
+5V
VAN
VIN
4.7K
R54
4.7K
R53
4.7K
R52
4.7K
R48
4.7K
R46
100p
C25
1K
R49
1K
R50
1K
R51
BSS
Q5
BSS
Q6
BSS
Q7
BSS
Q8
*
JU7
560p
C26
560p
C28
B25
Q4
47K
R47
2
1
A7
D4:1
3
1
A7
D4:2
VIN
*
JU6
JU5
JU8
IN+
1
IN- 2
GS 3
VREF
4
IC* 5
IC* 6
NC 7
OSC1
8
OSC2
9
VSS 10
TOE
11
Q1
12
Q2
13
Q3
14
Q4
15
NC 16
ST
17
EST 18
ST/GT 19
VDD
20
*
U4
11
33
22
*
R41
470K
R42
1.2M
R43
SD1
D5
.1u
C3
+5V
+5V
20K
R24
20K
R26
20K
R28
20K
R30
20K
R32
20K
R34
20K
R36
20K
R38
20K
R39
10K
R25
10K
R27
10K
R29
10K
R31
10K
R33
10K
R35
10K
R37
D25
Q3
4.7K
R44
33R
R7
VIN
22K
R18
22K
R19
100K
R20
560p
C19
.01u
C18
11
33
22
10K
R22
39K
R21
27K
R23
.47u
C20
100p
C21
D25
Q2
VIN
VIN
.022u
C5
100K
R40
3.58 MHz.
Y1
22p
C23
22p
C24
4.7M
R17
TX/TONE OUT[GRN]
TX/TONE OUT[GRN]
P1:1
5.5V - 15V VIN[RED]
5.5V - 15V VIN[RED]
P1:2
COR/COS IN[BRN]
COR/COS IN[BRN]
P1:3
GND[BLK]
GND[BLK]
P1:4
ALERT TONE/SPEAKER OUT[BLU]
ALERT TONE/SPEAKER OUT[BLU]
P1:5
RX/TONE IN[ORG]
RX/TONE IN[ORG]
P1:6
MON/SQ OUT[YEL]
MON/SQ OUT[YEL]
P1:7
MIC MUTE OUT[GRN/W]
MIC MUTE OUT[GRN/W]
P1:8
PTT OUT[WHT]
PTT OUT[WHT]
P1:9
SCAN/DISABLE OUT/HORN OUT[GRY/W]
SCAN/DISABLE OUT/HORN OUT[GRY/W]
P1:10
PTT IN[GRY]
PTT IN[GRY]
P1:11
MONITOR/PROG IN[ORG/W]
MONITOR/PROG IN[ORG/W]
P1:12
EMER/AUX[VIO]
EMER/AUX[VIO]
P1:13
*
UK1
+5V
TP5
PTT LED
TP4
CALL LED
TP3
BUSY LED
D
F
E
G
TP2
TP1
TP6
NOTES:
JU1
JU3
A
B
C
TO USE JU1, REMOVE R63
TO USE JU3, REMOVE R21
