TEA1067/C2 Philips Semiconductors (Acquired by NXP), TEA1067/C2 Datasheet - Page 18

• Manufacturer Part Number: TEA1067/C2
• Description: TEA1067; Low Voltage Versatile Telephone Transmission Circuit With Dialler Interface;; Package: SOT102-1 (DIP18), SOT163 (SO20)
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
June 1990
handbook, full pagewidth
handbook, full pagewidth
Low voltage versatile telephone
transmission circuit with dialler interface
Voltage gain is defined as: G
MIC and MIC the MUTE input should be LOW or open, for measuring the
DTMF input MUTE should be HIGH. Inputs not under test should be open.
Voltage gain is defined as: G
C1
C1
100 F
100 F
V i
10 F
Fig.14 Test circuit for defining voltage gain of MIC , MIC and DTMF inputs.
V i
V i
Fig.15 Test circuit for defining voltage gain of the receiving amplifier.
v
v
10 F
= 20 log V
= 20 log V
IR
MIC
MIC
DTMF
MUTE
PD
o
o
IR
MIC
MIC
DTMF
MUTE
PD
/V
/V
i
i
V EE
V EE
.
. For measuring the gain from
V CC
V CC
REG
REG
4.7
C3
4.7
C3
F
F
TEA1067
TEA1067
AGC
620
AGC
620
R1
R1
R6
R6
18
STAB
STAB
3.6
R5
k
R5
3.6
k
LN
LN
SLPE
SLPE
GAS1
GAS2
GAS1
GAS2
GAR
QR
QR
GAR
QR
QR
R9
20
R9
20
10 F
100
R4
k
100
R7
R4
k
R7
k
68
Z L
C7 1 nF
C7 1 nF
100 F
C6
100 pF
C4
100 pF
C6
100 pF
C4
100 pF
600
V o
R L
600
100 F
I line
I line
MGR089
MGR088
V o
Product specification
TEA1067
140 mA
140 mA
1 to
1 to