Philips Semiconductors
Product specification
Low voltage transmission circuits with
dialler interface
TEA1062; TEA1062A
I
R1
line
handbook, full pagewidth
620 Ω
13
1
LN
10
7
V
CC
100 µF
IR
V
R
600 Ω
o
L
MIC
4
QR
V
i
C4
100 pF
6
R4
100 kΩ
MIC
5
2
GAR
11
12
TEA1062
100 µF
DTMF
MUTE
C7 1 nF
C1
GAS1
10 to 140 mA
C8
1 nF
R7
68 kΩ
10 µF
3
C6
GAS2
V
i
100 pF
V
EE REG AGC STAB SLPE
9
14
15
8
16
C3
4.7
µF
R5
3.6
kΩ
R9
20 Ω
R6
MSA508
Voltage gain is defined as Gv = 20 log Vo/Vi .
For measuring gain from MIC+ and MIC− the MUTE input should be LOW or open-circuit.
For measuring the DTMF input, the MUTE input should be HIGH.
Inputs not being tested should be open-circuit.
Fig.14 Test circuit for defining TEA1062 voltage gain of MIC+, MIC− and DTMF inputs.
1997 Sep 03
17
NXP [ NXP ]
