PBL 3852
R21
(+Line)
DC-control
5
Mute
6
1
R24
C13
17
13
+
+
12
C12
+
R25
R22
DC
supply
DC
supply
Ref.
18
Ref.
15
16
PBL 3852
3
11
2
7
14
9
8
10
4 +
C4
C8
C5
D1
R10
R3
R4
DC1 DC2
R19
R11
C6
Power
down
R9
R12
R18
R17
R14
C3
C2
+
+
R7
R8
R5
R6
C7
+
+
R13
C9
C10
R15
(-Line)
DTMF
Component list for application with soft clipping.
R1 =
R2 =
-
-
C1 = -
C2 = 47µF
C3 = 47µF
C4 = 150nF
C5 = 47nF
R3 = 100Ω
R4 = 24k
R5 = 10k
R6 = DTMF level adj. C6 = 100nF
R7 = 39Ω
R8 = 30k
R9 = 620Ω
R10 = 24k
R11 = 3.3k
R12 = 130Ω
R13 = 2.4Ω
R14 = 360k
R15 = 360k
R16 = -
C7 = 2.2µF
C8 = 47nF
C9 = 47µF
C10 = 15nF
C11 =
-
C12 = 1µF
C13 = 1µF
R17 = 13k
R18 = 62k
R19 = 910Ω
R20 =
-
R21 = 15k
R22 = 30Ω
R23 =
-
R24 = 200Ω
R25 = 200Ω
Figure 34. Application with softclipping.
22
ERICSSON [ ERICSSON ]
