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TEA1064A/C2 View Datasheet(PDF) - Philips Electronics

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TEA1064A/C2 Datasheet PDF : 36 Pages
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Philips Semiconductors
Low voltage versatile telephone transmission circuit
with dialler interface and transmit level dynamic limiting
Product specification
TEA1064A
handbook, h6alfpage
VLN(p-p)
(V)
4
2
Ip =
0 mA
2 mA
4 mA
MGR060
0
10
20
Iline (mA)
30
Fig.5
Maximum AC output swing on the line as a
function of line current with peripheral
supply current as a parameter: R15 = 0 ;
R16 = 392 .
handbook, halfpage
Leq
Vref
R9
20
LN
Rp
REG
C3
4.7 µF
R1
VCC1
C1
VEE
MGR061
Fig.6
Equivalent impedance between LN and
VEE in the application with stabilized
VLN-SLPE:
R15 = 0
Leq = C3 × R9 × Rp
Rp = 15 k
handbook, full pagewidth
7.8
Vref
(V)
6.6
MGR062
5.4
4.2
3.0
0
40
80
120
RVA (REG-SLPE) (k)
with RVA
infinite
Fig.7 Internal reference voltage VCC2-SLPE as a function of resistor RVA(REG-SLPE) for line currents between 11
and 140 mA.
In the stabilized supply application:
VLN = VCC2-SLPE + ([Ip + 0.25 × 103 A] × R15) + ([Iline 1.55 × 103 A] × R9)
In the unregulated supply application (R15 = 0 ):
VLN = VCC2-SLPE + ([Iline 1.55 × 103 A] × R9)
March 1994
8
 

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