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TEA1062N-D16-T 데이터시트(PDF) 11 Page - Unisonic Technologies

부품명 TEA1062N-D16-T
상세설명  LOW VOLTAGE TELEPHONE TRANSMISSION CIRCUIT WITH DIALLER INTERFACE
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TEA1062N/TEA1062AN
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
11 of 13
www.unisonic.com.tw
QW-R108-011.C
4
9
QR
VEE
9
4
QR
VEE
4
9
QR
VEE
(2)
(1)
(a)
(b)
(c)
Fig.11 Alternative receiver arrangement
(a) Dynamic earpiece.
(b) Magnetic earpiece. The resistor marked(1) may be connected to prevent distortion(inductive load)
(c) Piezoelectric earpiece. The earpiece marked(2) is required to increase the phase margin (capacitive load)
-6
-4
-2
0
0
20406080
100
120
140
Iline (mA)
R9=20
78.7k
110k
140k
(1) (2) (3)
(3)
(1)
(2)
R6=
R6=
R6=
Fig. 12 Variation of gain with line current, with R6 as a parameter.
→Gv
(dB)
R6=∞
Rexch(
Ω)
400
600
800
1000
R6(k
Ω)
36
100
78.7
×
×
Vexch(V)
48
140
110
93.1
82
60
×
×
120
102
Table 1 Values of resistor R6 for optimum line loss compensation for various usual values of exchange
supply voltage (Vexch) and exchange feeding bridge resistance(Rexch);R9=20
Ω.
10
6
11
7
12
13
1
4
5
2
3
16
8
15
14
9
MIC-
MIC+
REG AGC STAB SLPE
GAS2
GAS1
GAR
QR
LN
VCC
VEE
IR
DTMF
MUTE
R1 620
Ω
100
μF
C4
100pF
C7 1nF
C6
100pF
R4
100k
Ω
R7
68k
Ω
R9
20
Ω
R5
3.6k
Ω
R6
C3
4.7
μF
10
μF
C1
100
μF
Vi
Vi
RL
600
Ω
C8 1nF
10 TO 140 mA
Vo
Fig.13 Test circuit defining voltage gain of MIC+, MIC- and DTMF inputs.


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