TEA1067 View Datasheet(PDF) - Philips Electronics
Part Name
Description
MFG CO.
TEA1067
Philips Electronics
'TEA1067' PDF : 28 Pages View PDF
Philips Semiconductors
Low voltage versatile telephone
transmission circuit with dialler interface
Product specification
TEA1067
handbook, full pagewidth
R1
620 Ω
Iline
Vi
C1 100 µF
10 µF
Vi
VCC
IR
LN
QR−
MIC+
MIC−
DTMF
MUTE
TEA1067
QR+
GAR
GAS1
PD
VEE
REG
AGC
STAB
GAS2
SLPE
C3
R5
4.7
R6
3.6
R9
µF
kΩ
20 Ω
100 µF
RL
Vo
600 Ω
R4
C4
100 100 pF
kΩ
C7 1 nF
R7
68
kΩ
C6
100 pF
1 to
140 mA
Voltage gain is defined as: Gv = 20 log Vo/Vi. For measuring the gain from
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.
MGR088
Fig.14 Test circuit for defining voltage gain of MIC+, MIC− and DTMF inputs.
handbook, full pagewidth
10 µF
Vi
C1 100 µF
R1
620 Ω
VCC
IR
LN
QR−
MIC+
MIC−
DTMF
MUTE
TEA1067
QR+
GAR
GAS1
PD
VEE
REG
AGC
STAB
GAS2
SLPE
Iline
10 µF
100 µF
600 Ω
ZL Vo
R4
C4
100 100 pF
kΩ
C7 1 nF
R7
C6
100 pF
1 to
140 mA
C3
R5
4.7
R6
3.6
R9
µF
kΩ
20 Ω
Voltage gain is defined as: Gv = 20 log Vo/Vi.
MGR089
Fig.15 Test circuit for defining voltage gain of the receiving amplifier.
June 1990
18
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