參數(shù)資料
型號(hào)： 933880320112
廠商： NXP SEMICONDUCTORS
元件分類： 無(wú)繩電話/電話
英文描述： TELEPHONE SPEECH CKT, PDSO20
封裝： PLASTIC, SOT-163, SO-20
文件頁(yè)數(shù)： 10/29頁(yè)
文件大?。?/td> 231K
代理商： 933880320112
June 1990
18
Philips Semiconductors
Product specication
Low voltage versatile telephone
transmission circuit with dialler interface
TEA1067
handbook, full pagewidth
MGR088
VCC
LN
PD
MUTE
DTMF
MIC
MIC
+
IR
620
TEA1067
R4
100
k
RL
600
Iline
C4
100 pF
C7 1 nF
1 to
140 mA
100
F
C1
100
F
R7
68
k
C6
100 pF
R1
QR
QR
+
GAR
GAS1
GAS2
Vo
VEE
REG
AGC
STAB
R9
20
R5
3.6
k
R6
C3
4.7
F
SLPE
10
F
Vi
Fig.14 Test circuit for defining voltage gain of MIC
+, MIC and DTMF inputs.
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.
Fig.15 Test circuit for defining voltage gain of the receiving amplifier.
handbook, full pagewidth
MGR089
VCC
LN
PD
MUTE
DTMF
MIC
MIC
+
IR
620
TEA1067
R4
100
k
600
Iline
C4
100 pF
C7 1 nF
1 to
140 mA
100
F
C1
100
F
R7
C6
100 pF
10
F
10
F
R1
ZL
QR
QR
+
GAR
GAS1
GAS2
Vi
Vo
VEE
REG
AGC
STAB
R9
20
R5
3.6
k
R6
C3
4.7
F
SLPE
Voltage gain is defined as: Gv = 20 log Vo/Vi.
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