TEA1066T Philips Semiconductors (Acquired by NXP), TEA1066T Datasheet - Page 14

• Manufacturer Part Number: TEA1066T
• Description: Versatile Telephone Transmission Circuit With Dialer Interface
• Manufacturer: Philips Semiconductors (Acquired by NXP)

Philips Semiconductors
1996 Apr 04
handbook, full pagewidth
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
QR
QR
V EE
impedance.
5
4
12
(dB)
G v
0
2
4
6
0
Fig.11 Variation of gain with line current, with R6 as a parameter.
b. Dynamic earpiece with
20
48.7 k
Fig.10 Alternative receiver arrangements.
more than 450
QR
QR
impedance.
40
78.7 k
5
4
110 k
60
14
140 k
c. Magnetic earpiece
with more than 450
80
QR
QR
impedance.
5
4
R6
(1)
100
120
I line (mA)
MBH126
d. piezoelectric
QR
QR
140
earpiece.
Product specification
TEA1066T
5
4
(2)
MBH122