tea1062a-c4-m1 NXP Semiconductors, tea1062a-c4-m1 Datasheet - Page 18

• Manufacturer Part Number: tea1062a-c4-m1
• Description: Low Voltage Transmission Circuits With Dialler Interface
• Manufacturer: NXP Semiconductors

Philips Semiconductors
1997 Sep 03
handbook, full pagewidth
Low voltage transmission circuits with
dialler interface
Voltage gain is defined as G
For measuring gain from MIC+ and MIC the MUTE input should be HIGH.
For measuring the DTMF input, the MUTE input should be LOW or open-circuit.
Inputs not being tested should be open-circuit.
C1
100 F
10 F
Fig.15 Test circuit for defining TEA1062A voltage gain of MIC+, MIC and DTMF inputs.
V i
V i
v
= 20 log V
10
11
12
6
7
o
IR
/V
MIC
MIC
DTMF
MUTE
i
.
V
EE
9
V CC
C3
4.7
F
13
REG
14
TEA1062A
620
AGC
R1
15
R6
STAB
18
8
R5
3.6
k
LN
1
SLPE
GAS1
GAS2
16
GAR
R9
20
QR
4
5
2
3
R4
100 k
R7
68 k
100 pF
100 F
C7 1 nF
TEA1062; TEA1062A
C4
100 pF
1 nF
C8
C6
600
R L
I line
MBA355
V o
Product specification
10 to 140 mA