TEA1068T Philips Semiconductors, TEA1068T Datasheet - Page 14
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
dbook, full pagewidth
Philips Semiconductors
1996 Apr 23
handbook, full pagewidth
Versatile telephone transmission circuit
with dialler interface
(1) May be connected to prevent distortion (inductive load).
(2) Required to increase the phase margin (capacitive load).
R9 = 20 .
a. Dynamic earpiece
with less than 450
impedance.
QR
QR
V EE
(dB)
G v
0
2
4
6
0
Fig.13 Variation of gain with line current, with R6 as a parameter.
20
b. Dynamic earpiece with
48.7 k
more than 450
Fig.12 Alternative receiver arrangements.
impedance.
QR
QR
78.7 k
40
110 k
60
140 k
14
with more than 450
c. Magnetic earpiece
80
QR
QR
impedance.
R6
100
(1)
120
I line (mA)
MBH137
d. Piezoelectric
140
QR
QR
earpiece.
Product specification
TEA1068
(2)
MBH136