Philips Semiconductors
Product specification
Low voltage transmission circuits with
dialler interface
TEA1062; TEA1062A
handbook, full pagewidth
0
MSA507 - 1
R6 = ∞
∆G
v
(dB)
2
4
78.7 kΩ 110 kΩ 140 kΩ
6
0
20
40
60
80
100
120
140
(mA)
I
line
R9 = 20 Ω.
Fig.13 Variation of gain as a function of line current with R6 as a parameter.
Table 1 Values of resistor R6 for optimum line-loss compensation at various values of exchange supply voltage
(Vexch) and exchange feeding bridge resistance (Rexch); R9 = 20 Ω.
R6 (kΩ)
Vexch (V)
Rexch = 400 Ω
Rexch = 600 Ω
Rexch = 800 Ω
Rexch = 1000 Ω
36
48
60
100
140
−
78.7
110
−
−
−
93.1
120
82
102
1997 Sep 03
16
NXP [ NXP ]
