This text is here in white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here in
_white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader.This text is here inThis text is here in
white to force landscape pages to be rotated correctly when browsing through the pdf in the Acrobat reader. white to force landscape pages to be ...
R16
1 MΩ
MOSN1
BUK554
R1
620 Ω
BAS11
(4×)
D1
telephone D4
line
D2
D3
D5
BZX79c
BV2
R2
130 kΩ C5
100 nF
17
IR
R3
3.65
kΩ
R4
100 kΩ
4 QR−
R11
5
QR+
C4
100 pF
6
GAR
C7 1 nF
8 MIC+
12
DOC
1
LN
TEA1065
21
VCC
19
DTMF
20
MUTE
18
PD
10
DPI
VEE 16
7
MIC−
23 R6
AGC
SLPE GAS1
24 2
GAS2 VSI REFI VBG CURL STAB REG
3
14 13 11 15 9
22
C6
R7
R8
715 Ω
100 pF 68 kΩ
R15
15 kΩ
R9a
15 Ω
Zbal
C15
6.8 µF
R13
30
kΩ
R14 R5
30
3.6
kΩ
kΩ
C3
4.7 µF
R9b
5Ω
+
C1
100 µF
from dial
and
control circuits
−
MBA561
Fig.18 Typical application of the TEA1065, with a piezoelectric earpiece and DTMF dialling.