1.5
R76
R4
R7
D11
K
A
K
1M8
C3
skt
U2:A
120k
R77
2
-
1
3
+
NOTES:
LMC6482N
Evaluation Kit for CMX602B
Not fitted
Not fitted
1
250mA
J1
FS1
R1
D30
R6
Not fitted
2
A
1
3
skt
Wire link
skt
1N4004
A
skt
Not fitted:-
C3 , C11, D1, R1, R2, R4, R6, R7, R16 and R19.
LV
WP
D1
1N4004
K
A
K
4
2
10
5
RLY1:C
D12
TR9
skt
GND
C18
ZVNL120A
TR10
GND
1
6
R2
D31
X1
C19
18pF
GND
R43
1
WETTING
PULSE
AC
LOAD
AC
18pF
3.579545
JP2
2
2
1
7
Not fitted
8
5
100nF
A
K
K
A
6
100k
D2
D4
R25
R29
R33
2
680pF
-
7
470k
6
skt
PROTO_12*20
470k
R15
240k
GND
skt
270k
160k
TR2
2N7000
R35
R18
GND
LMC6482N
skt
GND
RLY2:C
10
8
7
VDD
R8
1uF
4
1
3 +
skt
TP1
skt
600R
skt
R19 skt
R22
100k
TP4
7
TP2
R21
C14
330pF
R30
100k
U3:B
LMC6482N
100k
GND
Not fitted
Not fitted
Not fitted
2000 Consumer Microcircuits Limited
1N4004
GND
1N4004
LINE
skt
Wire Link
J2
ZVNL120A
C9
R13
GND
470k
C23
TP7
JP4
100k
JP3
VDD
VDD
R/L
1
2
EXTERNAL
PHONE
MUTE
3
4
VDD
External
CLOCK
PHONE
1N4004
GND
1N4004
C8
R14
C15
TP9
4
5
A
K
K
2
15
14
13
12
1N4004
A
D3
R27
390k
TR1
3
D5
82k
1
RING OR
LINE REVERSAL
SELECTION
U4
100nF
470k
TP8
GND
TP10 TP11 TP12 TP13
VDD
100nF
R20
ZVNL120A
GND
22pF
R28
C12 skt
8
1N4004
XTALN
XTAL
Vdd
RXD
RXCK
DET
IRQN
ZP
MODE
Vbias
RD
RT
16
RXD
RXCK
DET
IRQN
PR1
C5
R11
7
100k
330nF
C17
R32
270k
470k
skt
R36
6
470k
U2:B
AOP
INV
NINV
Vss
11
10
9
ZP
C22
100nF
GND
Circuit Schematics and Board Layouts
Figure 4 Analogue Section
9
R12
5
+
MODE
C6
680pF
200k
100nF
CMX602BP3
H/L
VDD
HOOK
TR3
TP5
TP3
-
2
DTMF
De-coupling for ICs 1 - 3.
C7
T1
200k
22uF
6
3
C13
100nF
R31
U5
VDD
ZVP4424A
47nF
C20
1
2
3
4
5
6
14
13
12
11
10
9
R44
1k
VDD
DTMF_D3
DTMF_D2
DTMF_D1
GND
3.579545
X2
7
8
C24
C10
LMC6482N
R23
U3:A
1
C25
2k2
skt
1:1 600R
R16
C26
47nF
47nF
47nF
GND
Vdd
En
/SING
GROUP
Vss
OSCIN
OSCOUT
TONEOUT
N/C
D3
D2
D1
D0
MUTE
D6
DTMF_D0
TP5088
R42
240R
GND
6
-
VDD
27pF
skt
C4
C11
VDD
RESISTIVE
3
MATCH
TO
LINE
GND
SW1
GND
R3
R10
1
2
R5
R40
R37
+
5
C21
36k
100nF
1k
R9
510k
10k
C2
COMPLEX
U1:A
1
1
2
10nF
3
+
10k
LMC6482N
2
-
MUTE
R34
15k
TR4
TP6
C16
100nF
R41
20k
JP1
R17
47k
U1:B
-
7
6
J3
4
3
C1
LMC6482N
5
+
R24
100k
R26
10k
GND
GND
J4
BC183L
4K7
2
10uF
1
GND
SKT_HANDSET
EV6021
UM6021/4
GND
CMLMICRO [ CML MICROCIRCUITS ]
