tea1065t NXP Semiconductors, tea1065t Datasheet - Page 20

• Manufacturer Part Number: tea1065t
• Description: Versatile Telephone Transmission Circuit With Dialler Interface
• Manufacturer: NXP Semiconductors

Philips Semiconductors
March 1994
handbook, full pagewidth
Versatile telephone transmission circuit with
dialler interface
Voltage gain is defined as G
C1
100 F
V i
v
10 F
Fig.17 Test circuit for defining voltage gain of the receiving amplifier.
= 20 Log V
17
19
20
18
14
8
7
o
IR
MIC
MIC
DTMF
MUTE
PD
VSI
/V
V CC
V EE
i
.
21
16
REFI
REG
13
22
620
4.7
C3
F
R1
TEA1065
DOC
AGC
12
23
118
R6
k
20
STAB
LN
1
9
3.6
R5
k
SLPE
VBG
CURL
GAS1
GAS2
GAR
11
QR
QR
24
DPI
R9
20
15
10
4
5
6
2
3
V o
100
Z L
R4
k
R7
k
68
C7 1 nF
100 F
C6
100 pF
C4
100 pF
600
R L
I line
MBA559
Product specification
TEA1065
140 mA
5 to