L6726
LINEAR INTEGRATED CIRCUIT
FUNCTIONAL DIAGRAM(Cont.)
+Line
1
C8
1
7
10
DTMF
input
AD
AM
UTC 6726
R14
310Ω
220nF
AR
AT
12
13
1
8
REC
350 Ω
MIC
R16
350Ω 27k
DC
8
9 7
15 14 6 14
4
5
11
3
2
C4
47nF
R11
DC supply OUT
R10
82k
Sense input
Control output
R4
18k
R7
910 Ω
C3
100nF
CMOS device
MUTE
910 Ω R3
3kΩ
560Ω R8
C2
15nF
R6
75 Ω
R5
22k
R1
+
C1
*
*
R13
11k
+
47μF
C5
47μF
C7
R9
11k
R15
10 Ω
R2
-Line
100nF
Note : * Not used in test setup
Fig. 3 Circuit with external components for test setup.
UNISONIC TECHNOLOGIES CO., LTD
5 of 13
QW-R108-015, C
www.unisonic.com.tw
UTC [ Unisonic Technologies ]
