TEA1068T Philips Semiconductors, TEA1068T Datasheet - Page 11
TEA1068T
Manufacturer Part Number
TEA1068T
Description
Versatile telephone transmission circuit with dialler interface
Manufacturer
Philips Semiconductors
Datasheet
1.TEA1068T.pdf
(24 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TEA1068T
Manufacturer:
PHILIPS/飞利浦
Quantity:
20 000
Philips Semiconductors
1996 Apr 23
Transmitting amplifier output LN
V
V
Receiving amplifier input IR
Receiving amplifier outputs QR+ and QR
G
V
V
Gain adjustment GAR
SYMBOL
Z
Z
G
G
G
LN(rms)
no(rms)
o(rms)
no(rms)
Versatile telephone transmission circuit
with dialler interface
v
i
o
vf
vT
v
output voltage (RMS value)
noise output voltage (RMS value)
input impedance
output impedance
voltage gain from IR to QR+ or
QR
gain variation with frequency at
f = 300 Hz and f = 3400 Hz
gain variation with temperature at
T
output voltage (RMS value)
noise output voltage (RMS value)
gain variation of receiving amplifier
achievable by varying R4 between
GAR and QR
amb
25 C and +75 C
PARAMETER
I
I
200
MIC+; psophometrically
weighted (P53 curve)
single ended
I
with respect to 800 Hz
I
with respect to 25 C;
without R6
sine wave drive; I
I
R4 = 100 k
I
IR open-circuit
psophometrically weighted
(P53 curve)
line
line
line
line
p
line
= 0 mA; THD = 2%;
THD = 2%
THD = 10%
R
QR ) = 300 ; single-ended
R
QR ) = 600 ; differential
single-ended; R
single-ended; R
differential; f = 3400 Hz;
R
single-ended; R
differential; R
= 15 mA
= 15 mA; R7 = 68 k ;
= 15 mA
L
L
= 50 mA;
series
= 15 mA; R4 = 100 k ;
(from QR+ or
(from QR+ or
between MIC and
11
CONDITIONS
= 100 ; C
L
= 600
line
L
L
L
= 150
= 450
= 300
L
= 15 mA;
= 47 nF
1.9
17
24
30
0.3
0.4
0.8
0.5
8
MIN.
2.3
2.6
21
4
25
31
0.38
0.52
1.0
50
100
TYP.
72
0.2
0.2
Product specification
TEA1068
25
26
32
0
+8
MAX.
V
V
dBmp
k
dB
dB
dB
dB
V
V
V
dB
UNIT
V
V