tea1085t NXP Semiconductors, tea1085t Datasheet - Page 24

• Manufacturer Part Number: tea1085t
• Description: Listening-in Circuit For Line-powered Telephone Sets
• Manufacturer: NXP Semiconductors

Philips Semiconductors
The basic application circuit of the TEA1085/TEA1085A is illustrated in Fig.16. Only the most important components of
the TEA1060 part are shown, other components and their values are given in the TEA1060 Data sheet.
The supply pin (V
diallers etc.). Further information will be published in the TEA1085 application report.
Table 3 Component values in application circuit Fig.16
Note
1. Value depends on the gain setting of the transmission circuit.
March 1992
Resistor
R20
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
RV20
Capacitor
C11
C20
C21
C22
C23
C24
C25
C26
C27
C28
C29
C30
C31
Coil
L1
COMPONENT
Listening-in circuit for line-powered
telephone sets
BB
TEA1085 only 10
note 1
note 1
note 1
note 1
note 1
CONDITION
) of the TEA1085/TEA1085A can also be used to supply peripheral circuits (e.g. microcontrollers,
150
1
10
10
3.3
3.3
1.65
100
220
100
500
100
51
120
1
4.7
470
47
4.7
4.7
4.7
330
1
47
330
220
220
150
VALUE
k
k
k
M
M
M
k
k
k
k
k
k
k
nF
pF
nF
nF
nF
nF
nF
nF
nF
nF
F
F
F
H
UNIT
24
TEA1085; TEA1085A
Preliminary specification